CN214626274U

CN214626274U - Heat-resistant strain clamp for power transmission line

Info

Publication number: CN214626274U
Application number: CN202120900534.5U
Authority: CN
Inventors: 许同文; 杨军军; 耿学强; 练金辉
Original assignee: Zhuhai Huacheng Electronics Technology Design Institute Co ltd
Current assignee: Zhuhai Huacheng Electronics Technology Design Institute Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-11-05
Anticipated expiration: 2031-04-28

Abstract

The utility model provides a heat-resistant strain clamp for a transmission line, which comprises a clamp body, wherein the clamp body is a hollow tube; the wire clamp body is provided with a drainage plate; the drainage plate is provided with a drainage wire clamp, the drainage wire clamp is provided with a U-shaped bolt, two screw rods of the U-shaped bolt penetrate through the drainage wire clamp, and the drainage plate is clamped between the U-shaped bolt and the drainage wire clamp; the U-shaped bolt is internally provided with a pressing block, the pressing block is in contact connection with the drainage plate, the pressing block is provided with an arc-shaped groove, the U-shaped bolt is embedded in the arc-shaped groove, and the U-shaped bolt is fixed through a nut. The utility model provides a heat-resisting strain clamp for power transmission line not only has good heat dissipation's characteristic, still has construction simple to operate, carries the advantage that is difficult for losing in the transportation, lacks the piece, when having guaranteed its electrical characteristic, has improved construction installation effectiveness.

Description

Heat-resistant strain clamp for power transmission line

Technical Field

The utility model relates to a field of electric power fitting, in particular to heat-resisting strain clamp for power transmission line.

Background

The strain clamp is a hardware fitting used for fixing a lead to bear the tension of the lead and hanging the lead to a strain insulator-string group or a tower. The strain clamp can bear all tensile force of a lead or a lightning conductor, can also be used as a conductor, is an indispensable important element in a power transmission line, and has an important effect on safe and stable operation of a high-voltage power transmission line. At present, the connection mode of a tension clamp drainage plate and a drainage clamp used on a line is a single-plate structure, and the tension clamp adopting the structure often has the phenomena of scalding, burning and even fusing due to higher temperature of the drainage plate in actual operation, thereby bringing serious harm to the safe operation of the line.

Chinese patent document No. CN205453042U discloses a heat-resistant strain clamp for power transmission lines, which includes an aluminum pipe, a steel anchor, a drainage plate, a drainage clamp and a fixing bolt, wherein the aluminum pipe is wrapped outside the wire, the aluminum pipe is connected to the root of the steel anchor, a circular groove is formed in the middle of the drainage clamp, the diameter of the groove is the same as the width of the tuning fork type drainage plate, two horizontal sides are respectively arranged on two sides of the groove, and threaded holes are formed in the sides. When the drainage plate is installed, the drainage plate is placed into the groove of the drainage wire clamp, and then the horizontal side edges of the two sides of the groove are closed inwards, so that the fixing bolt fixes the drainage plate through the threaded hole in the side edge. The heat-resistant strain clamp for the power transmission line, which is related to the structure, has the advantages of good heat dissipation and better heat resistance.

But the power transmission line of this kind of structure is with heat-resisting resistant tension cable clamp when inwards closing the horizontal side of recess both sides, the problem of screw hole disalignment appears easily, and after a fixed bolt, can make another the condition that the skew appears to the screw hole because of the effect of force, need adjust the position of horizontal side and the elasticity of bolt many times, and the fixing process is comparatively loaded down with trivial details troublesome. In addition, the heat-resistant tension-resistant wire clamp for the power transmission line with the structure is used for carrying and transporting, the fixing bolt and other parts are carried and transported separately, and the situations of lost parts and missing parts are easily caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat-resisting strain clamp for power transmission line to solve the more loaded down with trivial details problem of the fixed process of prior art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a heat-resistant strain clamp for a transmission line comprises a clamp body, wherein the clamp body is a hollow tube; the wire clamp body is provided with a drainage plate; the drainage plate is provided with a drainage wire clamp, the drainage wire clamp is provided with a U-shaped bolt, two screw rods of the U-shaped bolt penetrate through the drainage wire clamp, and the drainage plate is clamped between the U-shaped bolt and the drainage wire clamp; the U-shaped bolt is internally provided with a pressing block, the pressing block is in contact connection with the drainage plate, the pressing block is provided with an arc-shaped groove, the U-shaped bolt is embedded in the arc-shaped groove, and the U-shaped bolt is fixed through a nut.

Preferably, a groove is formed in the drainage wire clamp, and the drainage plate penetrates through the groove.

Preferably, the drainage plate includes the ring and sets up the even board in ring one side, the ring cover is located on the fastener body, even the board is worn to locate in the recess.

Preferably, a steel anchor is arranged at one end of the wire clamp body, a shaft shoulder is arranged at the front end of the steel anchor, and the front end of the shaft shoulder is in compression joint with the wire clamp body.

The utility model has the advantages that:

1. the utility model provides a pair of heat-resisting strain clamp for power transmission line, when fixed drainage plate and drainage fastener, as long as tighten the nut just can reach the purpose with drainage plate and drainage fastener zonulae occludens, simple to operate is swift, has improved the efficiency of construction greatly.

2. The U-shaped bolt can be arranged on the drainage wire clamp in advance in a penetrating mode, a fixing bolt does not need to be carried independently, the situation that a part is lost or absent in the installation process is avoided, the construction and installation process is simplified, and the construction speed is effectively improved.

3. The drainage plate and the drainage wire clamp are compressed and fixed through the U-shaped bolt and the pressing block, so that the contact area between the drainage plate and the drainage wire clamp is ensured, the contact resistance is greatly reduced, and the electrical performance of the heat-resistant strain clamp for the transmission line is ensured.

4. The contact position of the front end of the steel anchor and the wire clamp body is a shaft shoulder, so that the end part of the wire clamp body can be positioned, the end faces of the steel anchor and the wire clamp body can be ensured to be in close contact after crimping, rainwater is prevented from entering an aluminum pipe, and the service performance of a product is better improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection of a drainage plate to a drainage clip in the direction A;

FIG. 3 is a schematic cross-sectional view of the U-shaped bolt and the pressing block;

FIG. 4 is a schematic structural view of a flow guide plate;

in the figure: 1. a wire clamp body; 2. a drainage plate; 3. a steel anchor; 4. a U-shaped bolt; 5. a compression block; 6. a drainage wire clamp; 7. a groove; 8. an arc-shaped groove;

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings.

A heat-resistant strain clamp for a transmission line comprises a clamp body 1, wherein the clamp body 1 is a hollow tube; the wire clamp body 1 is provided with a drainage plate 2; the drainage plate 2 is provided with a drainage wire clamp 6; the drainage wire clamp 6 is provided with a U-shaped bolt 4, two screw rods of the U-shaped bolt 4 penetrate through the drainage wire clamp 6, and the drainage plate 2 is clamped between the U-shaped bolt 4 and the drainage wire clamp 6; be equipped with compact heap 5 in the U type bolt 4, compact heap 5 with the contact of drainage plate 2 is connected, be equipped with arc recess 8 on the compact heap 5, U type bolt 4 scarf joint in the arc recess 8, U type bolt 4 is fixed through the nut.

In this embodiment, the connection fixed part of drainage plate 2 and drainage fastener 6 is the board type, wears to locate in recess 7 drainage plate 2 to compress tightly fixedly through compact heap 5, scarf joint U type bolt 4 in arc recess 8, make its surface fully contact with drainage fastener 6's surface, improved area of contact, effectively reduced contact resistance, reduced the electric energy loss in the transmission course.

The utility model discloses a theory of operation and application method: firstly, two screw rods of a U-shaped bolt 4 penetrate through threaded holes in a drainage wire clamp 6 and are fixed through nuts, one end of a wire clamp body 1 is in compression joint with a cable, and the other end of the wire clamp body is in compression joint with a steel anchor 3 to a steel anchor shaft shoulder position; then wear to locate in recess 7 drainage plate 2, arrange compact heap 5 in U type bolt 4 and make U type bolt 4 inlay in arc recess 8, screw up the nut, make drainage plate 2 and drainage fastener 6 zonulae occludens together under the extrusion of compact heap.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, and those skilled in the art can still make various alterations, modifications or equivalent substitutions on the specific embodiments of the present invention after reading the present application. However, any simple modification, equivalent change and modification made to the above embodiments according to the structure and working principle of the present invention still belong to the protection scope of the present invention.

Claims

1. The utility model provides a heat-resisting strain clamp for transmission line which characterized in that includes: the cable clamp comprises a cable clamp body (1), wherein the cable clamp body (1) is a hollow tube; the wire clamp body (1) is provided with a drainage plate (2); a drainage wire clamp (6) is arranged on the drainage plate (2); the drainage wire clamp (6) is provided with a U-shaped bolt (4), two screw rods of the U-shaped bolt (4) penetrate through the drainage wire clamp (6), and the drainage plate (2) is clamped between the U-shaped bolt (4) and the drainage wire clamp (6); be equipped with compact heap (5) in U type bolt (4), compact heap (5) with drainage plate (2) contact connection, be equipped with arc recess (8) on compact heap (5), U type bolt (4) scarf joint in arc recess (8), U type bolt (4) are fixed through the nut.

2. The heat-resistant strain clamp for the transmission line according to claim 1, wherein a groove (7) is formed in the drainage clamp (6), and the drainage plate (2) is arranged in the groove (7) in a penetrating manner.

3. The heat-resistant strain clamp for the transmission line according to claim 1, wherein the drainage plate (2) comprises a circular ring and a connecting plate arranged on one side of the circular ring, the circular ring is sleeved on the clamp body (1), and the connecting plate is arranged in the groove (7) in a penetrating manner.

4. The heat-resistant strain clamp for the transmission line according to claim 1, wherein a steel anchor (3) is arranged at one end of the clamp body (1), a shaft shoulder is arranged at the front end of the steel anchor (3), and the front end of the shaft shoulder is in compression joint with the clamp body (1).