CN215343835U - Integrated composite insulation comprehensive strain clamp - Google Patents
Integrated composite insulation comprehensive strain clamp Download PDFInfo
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- CN215343835U CN215343835U CN202120089366.6U CN202120089366U CN215343835U CN 215343835 U CN215343835 U CN 215343835U CN 202120089366 U CN202120089366 U CN 202120089366U CN 215343835 U CN215343835 U CN 215343835U
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Abstract
The utility model relates to an integrated composite insulating comprehensive strain clamp, which comprises a wedge-shaped clamp for clamping a wire, a connecting hardware connected with a fastening clamp, and a cylindrical insulator arranged between the clamp and the connecting hardware, wherein the insulator is formed by crimping the clamp and the connecting hardware; the wire clamp comprises an insulated inner wedge and a wedge-shaped outer wedge, the inner wedge is in single-phase sliding sleeve joint with the outer wedge, and the side face of the insulator is provided with a plurality of umbrella-shaped convex discs extending outwards; compared with the original strain clamp, the outer wedge of the novel integrated composite insulating comprehensive strain clamp is of a wedge-shaped structure, so that stress is distributed uniformly and the strength is higher; the connecting hardware fitting, the insulator and the wire clamp form an integrated structure after being crimped, so that the connecting hardware fitting, the insulator and the wire clamp are more convenient and faster in circuit installation and more firm and reliable in connection; the protruding dish that stretches out on the insulator has increased the creepage distance of fastener with link fitting, effectively prevents that the insulator from being punctured and leading to the electric leakage unusual.
Description
Technical Field
The utility model relates to the field of electricity, in particular to an integrated composite insulating comprehensive strain clamp.
Background
The strain clamp is a hardware tool which is used for fixing a lead to bear the tension of the lead and hanging the lead on a strain insulator-string group or a tower, is mainly applied to circuit erection, and has the advantages of high strength, reliable holding power, simplicity in installation, convenience in construction and the like; after the existing tension-resistant wire clamp is used for a long time, the wire clamp is easy to generate abnormity such as looseness or deformation under the action of the tension of a lead, and great potential safety hazard is caused,
SUMMERY OF THE UTILITY MODEL
The utility model relates to an integrated composite insulating comprehensive strain clamp, which comprises a wedge-shaped clamp for clamping a wire, a connecting hardware connected with a fastening clamp, and a cylindrical insulator arranged between the clamp and the connecting hardware, wherein the insulator is formed by crimping the clamp and the connecting hardware; the wire clamp comprises an insulated inner wedge and a wedge-shaped outer wedge, the inner wedge and the outer wedge are sleeved in a one-way sliding mode, and the side face of the insulator is provided with a plurality of umbrella-shaped convex discs extending outwards; compared with the original strain clamp, the outer wedge of the novel integrated composite insulating comprehensive strain clamp is of a wedge-shaped structure, so that stress is distributed uniformly and the strength is higher; the connecting hardware fitting, the insulator and the wire clamp form an integrated structure after being crimped, so that the connecting hardware fitting, the insulator and the wire clamp are more convenient and faster in circuit installation and more firm and reliable in connection; the protruding dish that stretches out on the insulator has increased the creepage distance of fastener with link fitting, effectively prevents that the insulator from being punctured and leading to the electric leakage unusual.
The technical scheme of the utility model is as follows:
the integrated composite insulation comprehensive strain clamp comprises a wedge-shaped clamp for clamping a wire, a connecting hardware connected with a fastening clamp, and a cylindrical insulator arranged between the clamp and the connecting hardware, wherein the insulator is formed by compression joint with the clamp and the connecting hardware; the wire clamp comprises an insulating inner wedge and a wedge-shaped outer wedge, and the inner wedge is sleeved with the outer wedge in a one-way sliding mode.
In the direction vertical to the lead, the section of the outer wedge is C-shaped, and the C-shaped opening of the outer wedge is gradually reduced along the pull-back direction of the lead; the middle part of the inner wedge is provided with a fixing hole penetrating through the length direction of the inner wedge, and the inner wedge is divided into two symmetrical halves by a plane vertical to the center of the C-shaped opening of the outer wedge.
Preferably, the necking angle of the C-shaped opening of the outer wedge is 2-5 degrees.
The radial section of the fixing hole is a cone, and the minor axis of the cone of the fixing hole is smaller than the diameter of the clamped wire.
The inner wedge is provided with a convex retreating block at one end of a C-shaped large opening of the outer wedge, and convex and concave engaging teeth are respectively arranged at the contact ends of the two symmetrical halves of the inner wedge.
The inner surface of the fixing hole is provided with a plurality of annular anti-skidding grooves, the inner wall of the fixing hole is provided with a drain hole which is parallel to the axial direction of the fixing hole, and the drain hole penetrates through the bottom ends of the anti-skidding grooves.
The side face of the insulator is provided with a plurality of umbrella-shaped convex discs which extend outwards, and the convex discs and the insulator are integrally formed.
Preferably, the protruding length of the protruding disc is larger than the radius of the insulator and smaller than the diameter of the insulator.
The outer wedge is provided with a pull ring at one end far away from the connecting hardware fitting, and the central position of the pull ring are located on the same horizontal plane.
The utility model has the following beneficial effects:
1. compared with the original strain clamp, the outer wedge of the integrated composite insulating comprehensive strain clamp is of a wedge-shaped structure, the stress distribution is uniform, the strength is higher, the wire drawing resistance is good, and the service life of the strain clamp is effectively prolonged.
2. The connecting hardware fitting, the insulator and the wire clamp form an integrated structure after being crimped, so that the connecting hardware fitting, the insulator and the wire clamp are more convenient and faster in circuit installation, and the connection is firmer and more reliable.
3. The section of the outer wedge is C-shaped, so that the inner wedge for clamping the lead is convenient to mount, and the C-shaped structure has no closed magnetic ring, so that the loss of power transmission of the lead is reduced; the C font open-ended throat angle of outer wedge is 2 ~ 5, makes the grip of fastener more transmit the sinle silk to, reduces to the axial drawing of fastener, improves the fastener to the connection ability of wire.
4. The two half-attached inner wedges are convenient for inserting the lead, and the operation is simple and convenient; the two symmetrical halves of the inner wedge are respectively provided with convex and concave interlocking teeth at the contact ends, when the inner wedge is folded, the two halves of the inner wedge can be effectively prevented from moving in a staggered manner, the integrity of the inner wedge is ensured, and the clamping effect of the inner wedge is further improved.
5. The radial section of the fixing hole of the inner wedge is in a conical circle shape, the conical fixing hole can increase extrusion force on a lead, the lead is compressed and deformed, the connection strength of the deformed lead and the wire clamp is higher, and the connection capacity of the wire clamp on the lead is improved.
6. The protruding disc extending outwards on the insulator increases the creepage distance between the wire clamp and the connecting hardware fitting, effectively prevents the insulator from being punctured to cause abnormal electric leakage, and improves the safety of the strain clamp.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a top view of the drawing of the present invention;
FIG. 3 is a side view of the present invention;
FIG. 4 is a cross-sectional view of an inner wedge of the present invention.
The reference numbers in the figures denote:
1-wire clamp, 11-inner wedge, 111-fixing hole, 112-receding block, 113-meshing tooth, 114-antiskid groove, 115-drainage hole, 12-outer wedge, 121-pull wire ring, 2-link fitting, 21-pull ring, 3-insulator and 31-convex disc.
Detailed Description
The utility model is described in detail below with reference to the figures and the specific embodiments.
Referring to fig. 1 to 4, the integrated composite insulating comprehensive strain clamp comprises a wedge-shaped clamp 1 for clamping a wire, a connecting hardware fitting 2 connected with a fastening clamp, and a cylindrical insulator 3 arranged between the clamp 1 and the connecting hardware fitting 2, wherein the insulator 3 is made of glass or ceramic; the insulator 3, the wire clamp 1 and the connecting hardware fitting 2 are formed in a compression joint mode, and the connecting hardware fitting 2, the insulator 3 and the wire clamp 1 form an integrated structure after compression joint, so that the connection is more convenient and more reliable in line installation; the end, far away from the wire clamp 1, of the connecting hardware fitting 2 is provided with a pull ring 21, and the pull ring 21 is convenient to connect with a hardware fitting on a strain insulator-string group or a tower; the wire clamp 1 comprises an insulated inner wedge 11 and a wedge-shaped outer wedge 12, the inner wedge 11 and the outer wedge 12 are sleeved in a one-way sliding mode, the wedge-shaped outer wedge 12 is uniform in stress distribution and higher in strength, the wire drawing resistance is good, and the service life of the strain clamp is effectively prolonged; the inner wedge 11 is made of engineering plastics and has good insulativity and hardness.
Furthermore, in the direction perpendicular to the lead, the section of the outer wedge 12 is C-shaped, the C-shaped outer wedge 12 is convenient for installing the inner wedge 11 for clamping the lead, and the C-shaped structure has no closed magnetic ring, so that the loss of the lead power transmission is reduced; the C-shaped opening of the outer wedge 12 is gradually reduced along the pull-back direction of the lead; the middle part of the inner wedge 11 is provided with a fixing hole 111 penetrating through the length direction of the inner wedge, and a plane vertical to the center of the C-shaped opening of the outer wedge 12 divides the inner wedge 11 into two symmetrical halves.
Preferably, the necking angle of the C-shaped opening of the outer wedge 12 is 2-5 degrees, and the smaller inclination angle enables the grip strength of the wire clamp 1 to be more transmitted to the wire core, so that the axial drawing of the wire clamp 1 is reduced, and the connecting capacity of the wire clamp 1 to a wire is improved.
Furthermore, the radial cross section of the fixing hole 111 is conical, the minor axis of the conical circle of the fixing hole 111 is smaller than the diameter of the clamped wire, the extrusion force on the wire can be increased by the conical fixing hole 111, the extruded wire is compressed and deformed, the connection strength between the deformed wire and the wire clamp 1 is higher, and the connection capacity of the wire clamp 1 on the wire is improved.
Furthermore, the inner wedge 11 is provided with a convex retreating block 112 at one end of the C-shaped large opening of the outer wedge 12, when a wire in the wire clamp 1 is to be disassembled, the retreating block 112 can be impacted to separate the inner wedge 11 from the outer wedge 12, and the separation is simple and convenient; the two symmetrical halves of the inner wedge 11 are respectively provided with convex and concave engaging teeth 113 at the contact ends, and when the inner wedge 11 is folded, the two halves of the inner wedge 11 can be effectively prevented from moving relative to each other, so that the integrity of the inner wedge 11 is ensured, and the clamping effect of the inner wedge 11 is further improved.
Furthermore, a plurality of annular anti-slip grooves 114 are formed in the inner surface of the fixing hole 111, and the anti-slip grooves 114 can increase the grip force on the lead; the inner wall of the fixing hole 111 is provided with a water discharge hole 115 which is parallel to the axial direction of the fixing hole, the water discharge hole 115 penetrates through the bottom end of the anti-slip groove 114, and the water discharge hole 115 can timely discharge the water in the anti-slip groove 114, so that the occurrence of electric leakage or short circuit abnormity is prevented.
Further, the side face of the insulator 3 is provided with a plurality of protruding discs 31 extending outwards, the protruding discs 31 and the insulator 3 are integrally formed, the creepage distance between the wire clamp 1 and the connecting hardware fitting 2 is increased due to the protruding discs 31 extending outwards, the phenomenon that the electric leakage is abnormal due to the fact that the insulator 3 is punctured is effectively prevented, and the safety of the strain clamp is improved.
Preferably, the protruding length of the protruding disc 31 is greater than the radius of the insulator 3 and smaller than the diameter of the insulator 3, and the protruding distance of the protruding disc 31 not only ensures the overall strength of the insulator 3, but also has a better insulation effect.
Further, one end of the outer wedge 12, which is far away from the connecting hardware fitting 2, is provided with a wire-pulling ring 121, and the wire-pulling ring 121 is connected with a wire grip, so that construction work of workers is facilitated; the central position of the pull ring 121 and the central position of the pull ring 21 are positioned on the same horizontal plane, so that the strain clamp is effectively prevented from generating torsion, and the service life is prolonged.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. Strain clamp is synthesized to integral type composite insulation, its characterized in that: the clamp comprises a wedge-shaped wire clamp (1) for clamping a wire, a connecting hardware fitting (2) connected with a fastening clamp, and a cylindrical insulator (3) arranged between the wire clamp (1) and the connecting hardware fitting (2), wherein the insulator (3) is formed by crimping the wire clamp (1) and the connecting hardware fitting (2), and a pull ring (21) is arranged at one end, far away from the wire clamp (1), of the connecting hardware fitting (2); the wire clamp (1) comprises an insulating inner wedge (11) and a wedge-shaped outer wedge (12), and the inner wedge (11) is sleeved with the outer wedge (12) in a one-way sliding mode.
2. The integrated composite insulating comprehensive strain clamp of claim 1, characterized in that: in the direction vertical to the lead, the section of the outer wedge (12) is C-shaped, and the C-shaped opening of the outer wedge (12) is gradually reduced along the lead pulling direction; the middle part of the inner wedge (11) is provided with a fixing hole (111) penetrating through the length direction of the inner wedge, and the inner wedge (11) is divided into two symmetrical halves by a plane vertical to the center of the C-shaped opening of the outer wedge (12).
3. The integrated composite insulating comprehensive strain clamp of claim 2, characterized in that: the necking angle of the C-shaped opening of the outer wedge (12) is 2-5 degrees.
4. The integrated composite insulating comprehensive strain clamp of claim 2, characterized in that: the radial section of the fixing hole (111) is a cone, and the minor axis of the cone of the fixing hole (111) is smaller than the diameter of the clamped wire.
5. The integrated composite insulating comprehensive strain clamp of claim 2, characterized in that: the inner wedge (11) is provided with a convex retreating block (112) at one end of the C-shaped large opening of the outer wedge (12), and convex and concave engaging teeth (113) are respectively arranged at the contact ends of the two symmetrical halves of the inner wedge (11).
6. The integrated composite insulating comprehensive strain clamp of claim 2, characterized in that: the inner surface of the fixing hole (111) is provided with a plurality of annular anti-skidding grooves (114), the inner wall of the fixing hole (111) is provided with a water drainage hole (115) which is parallel to the fixing hole in the axial direction, and the water drainage hole (115) penetrates through the bottom end of the anti-skidding groove (114).
7. The integrated composite insulating comprehensive strain clamp of claim 1, characterized in that: the side face of the insulator (3) is provided with a plurality of umbrella-shaped convex discs (31) which extend outwards, and the convex discs (31) and the insulator (3) are integrally formed.
8. The integrated composite insulating comprehensive strain clamp of claim 7, wherein: the protruding length of the convex disc (31) is larger than the radius of the insulator (3) and smaller than the diameter of the insulator (3).
9. The integrated composite insulating comprehensive strain clamp of claim 1, characterized in that: one end of the outer wedge (12) far away from the connecting hardware fitting (2) is provided with a pull ring (121), and the center position of the pull ring (121) and the center position of the pull ring (21) are located on the same horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120089366.6U CN215343835U (en) | 2021-01-13 | 2021-01-13 | Integrated composite insulation comprehensive strain clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120089366.6U CN215343835U (en) | 2021-01-13 | 2021-01-13 | Integrated composite insulation comprehensive strain clamp |
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| Publication Number | Publication Date |
|---|---|
| CN215343835U true CN215343835U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120089366.6U Active CN215343835U (en) | 2021-01-13 | 2021-01-13 | Integrated composite insulation comprehensive strain clamp |
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| CN (1) | CN215343835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117791462A (en) * | 2024-02-28 | 2024-03-29 | 河北东毅电力有限公司 | Strain clamp for power line |
-
2021
- 2021-01-13 CN CN202120089366.6U patent/CN215343835U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117791462A (en) * | 2024-02-28 | 2024-03-29 | 河北东毅电力有限公司 | Strain clamp for power line |
| CN117791462B (en) * | 2024-02-28 | 2024-05-10 | 河北东毅电力有限公司 | Strain clamp for power line |
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