阅读说明：本技术 一种高耐候性防振锤及其加工方法 (High-weather-resistance damper and processing method thereof ) 是由 谢安全 周静 于 2021-09-27 设计创作，主要内容包括：一种高耐候性防振锤及其加工方法。涉及输电线路的电力金具技术领域,尤其涉及对防振锤结构的改进。包括线夹本体、线夹盖板、钢绞线、以及设在钢绞线两端的锤头；所述锤头包括锤头本体和两片锤头内唇,在锤头本体朝向线夹本体的端头设有内孔；所述内孔的底部设有一顶涨部件；所述钢绞线的端头设有压接管,所述压接管朝向所述内孔底部的一端留有空隙,所述空隙为预留涨紧段,所述预留涨紧段的外径与所述内孔的内径为间隙配合；所述预留涨紧段的内径与所述顶涨部件适配。本发明设计精巧,安装方便,锤头与钢绞线连接稳定可靠,使得这种防振锤结构可有效应对温差较大导致产生金属疲劳的高海拔地区环境,耐候性强。(A damper with high weather resistance and a processing method thereof. Relate to transmission line's electric power fitting technical field, especially relate to the improvement to damper structure. The cable clamp comprises a cable clamp body, a cable clamp cover plate, a steel strand and hammers arranged at two ends of the steel strand; the hammer comprises a hammer body and two hammer inner lips, and an inner hole is formed in the end of the hammer body facing the wire clamp body; the bottom of the inner hole is provided with a jacking component; the end of the steel strand is provided with a crimping pipe, a gap is reserved at one end of the crimping pipe facing the bottom of the inner hole, the gap is a reserved tensioning section, and the outer diameter of the reserved tensioning section is in clearance fit with the inner diameter of the inner hole; the inner diameter of the reserved tensioning section is matched with the jacking component. The anti-vibration hammer structure has the advantages of ingenious design, convenience in installation and high weather resistance, and the hammer head and the steel strand are stably and reliably connected, so that the anti-vibration hammer structure can effectively cope with the high-altitude area environment with metal fatigue caused by large temperature difference.)

1. A high-weather-resistance damper comprises a wire clamp body, a wire clamp cover plate, a steel strand and hammers arranged at two ends of the steel strand; the hammer comprises a hammer body and two hammer inner lips, and an inner hole is formed in the end of the hammer body facing the wire clamp body;

the device is characterized in that a jacking component is arranged at the bottom of the inner hole; the end of the steel strand is provided with a crimping pipe, a gap is reserved at one end of the crimping pipe facing the bottom of the inner hole, the gap is a reserved tensioning section, and the outer diameter of the reserved tensioning section is in clearance fit with the inner diameter of the inner hole; the inner diameter of the reserved tensioning section is matched with the jacking component, so that when the steel strand drives the crimping pipe to move towards the bottom of the inner hole, the reserved tensioning section expands and deforms under the action of the jacking component, and interference fit is formed between the deformed reserved tensioning section and the inner hole.

2. The damper of claim 1, wherein the jacking members are steel spheres or cones.

3. The high weather resistant damper of claim 1, wherein glue is injected into the interior of said bore.

4. The high-weather-resistance damper according to claim 1, wherein the damper head body and the two damper head inner lips form a unitary structure and are U-shaped as a whole, the outer end of the damper head body is provided with an anti-corona arc R1, and the head end of the damper head inner lip is provided with an anti-corona arc R2.

5. The damper as claimed in claim 1, wherein a plurality of annular grooves are formed on an inner wall of the inner bore.

6. The damper according to claim 1, wherein the wire clamp body is provided with a first arc groove, a containing groove and a penetrating pipe arranged therein in sequence from top to bottom, the outer end of the first arc groove is provided with an anti-corona arc R3, the upper portion in the containing groove is provided with a first bolt hole, the outer bottom of the first bolt hole is provided with a water leakage groove, the containing groove contains the wire clamp cover plate, and the penetrating pipe penetrates through the middle portion of the steel strand.

7. The damper according to claim 6, wherein the wire clamp cover plate is provided with a second arc groove and a second bolt hole in sequence from top to bottom, the first arc groove and the second arc groove are adapted to be used for a wire to be inserted, and the first bolt hole and the second bolt hole are adapted to be used for a fastening bolt to be inserted.

8. The processing method of the high-weather-resistance damper is characterized by comprising the following steps of:

1) the steel strand penetrates into the wire clamp body, and two ends of the steel strand are respectively sleeved with the crimping pipes; reserving a reserved tensioning section at the outer end of the crimping pipe;

2) injecting glue into the inner hole of the hammer head, and then placing the jacking component;

3) stretching the steel strand with the crimping pipe arranged at the head end into the inner hole, and applying axial acting force on the steel strand or the hammer head;

4) under the action of axial action force, the pipe orifice of the reserved tensioning section of the crimping pipe deforms under the action of the jacking and expanding component to form interference fit;

5) and finishing.

9. The processing method according to claim 8, wherein in the step 1), further comprising: after the crimping pipe is crimped with the joint of the steel strand, the cross section of the crimping connecting section is hexagonal.

10. The process of claim 8, wherein the depth of the jacking member extruding into the pre-tensioning section is about 3/10-3/7 of the diameter of the jacking member.

Technical Field

The invention relates to the technical field of electric power fittings of power transmission lines, in particular to an improvement on a damper structure.

Background

The vibration damper arranged on the power transmission line can effectively absorb vibration energy generated by instability of the wire caused by wind, and protect the wire and the wire support piece on the tower from fatigue damage. When the wires in the overhead line are subjected to wind force, the wires can vibrate, so that the working conditions at the suspension part of the wires are the most unfavorable. Frequent vibration can cause fatigue failure of the proximal end of the lead due to periodic "kinking". In order to protect the safety of the conductor, it is common to mount a damper in a suitable location on the conductor (typically near the tower) to absorb the vibrations. Therefore, the damper is an important electric power fitting for ensuring the safe operation of the line.

However, installation geographic environments of the damper are various, when the damper is applied to a region with high altitude, corona and radio interference noise can be generated on the surface of the damper, according to the on-site actual measurement of electromagnetic environments of a large number of 330kV power transmission lines, the corona discharge phenomenon of the conventional damper is more prominent within the range of the altitude of 1000-4000 m, the corona starting parts of the damper are mainly concentrated on two end parts of the hammer head, and the discharge intensity and the corona noise of the damper are increased along with the increase of the altitude. The most troubling problem for the technical personnel in the field is that the temperature difference (day and night temperature difference) in the high altitude area is large, and the shock-proof hammer is easy to be damaged by fatigue in the fixing process due to the expansion caused by heat and contraction caused by the sudden cold and heat alternation, so that the shock-proof hammer in the prior art has poor weather resistance (weak capacity of adapting to the day and night temperature difference).

In the prior art, the name published 3, 12 and 2014: a bell jar type vibration damper for high altitude areas, publication number: the invention patent document of CN103633607A proposes the following technical solutions: the damper comprises a hammer head, a steel strand and a wire clamp, wherein the hammer head is of a cylindrical structure, the length of a cylinder body is L1, the outer diameter of the cylinder body is phi 1, and the hammer head is sequentially provided with a conical concave hole, a mounting hole of the steel strand with the length of L2 and a lightening hole with the diameter of phi 3 along the direction of the central axis of the hammer head; the hammerhead is provided with a drain hole with the outer diameter phi 4 which radially penetrates through the circular ring at the circular ring outside the lightening hole; the radius of the cambered surface of the end part of the hammer head provided with the lightening hole is R2, the radius of the cambered surface of the end part of the hammer head provided with the mounting hole is R1, the radius of the cambered surface of the inner side of the lightening hole in the hammer head is R3, R2 is less than R1, and R3 is less than R1. Through the improvement on the outside and the inner structure of the hammer head, the curvature radius of the weak point is increased, the length and the outer diameter of the hammer head are optimized, the weight of the hammer head is reduced, the mass center position of the hammer head is adjusted, and the anti-corona performance and the anti-vibration effect of the anti-vibration hammer are greatly improved.

Name of announcement granted on 11/15/2019: antiskid type stockbridge damper, the authorized bulletin number: the utility model patent of CN209642263 proposes the following technical solution: the device comprises a steel strand and hammers arranged at two ends of the steel strand, wherein a fastening assembly is arranged in the middle of the steel strand; the fastening assembly comprises a wire clamp body and a wire clamp cover plate, the wire clamp body is in a hook shape, a first arc groove is formed in the upper portion of the wire clamp body, a first bolt hole is formed in the middle of the wire clamp body, a penetrating pipe used for placing a steel strand is arranged at the bottom of the first arc groove, a first groove used for placing a first conductive spring is formed in the bottom of the first arc groove, a first rubber layer is arranged on the inner wall of the first arc groove, and the first conductive spring extends out of the first rubber layer; the upper part of the wire clamp cover plate is provided with a second arc groove, the lower part of the wire clamp cover plate is provided with a second bolt hole, the bottom of the second arc groove is provided with a second groove for placing a second conductive spring, the inner wall of the second arc groove is provided with a second rubber layer, and the second conductive spring extends out of the second rubber layer; the first arc groove and the second arc groove are oppositely arranged and used for placing a wire, and the first bolt hole of the wire clamp body corresponds to the second bolt hole of the wire clamp cover plate and is used for placing a bolt for connection. The anti-skidding type stockbridge damper is simple in structure, convenient to install and capable of avoiding damage to a wire.

However, in the prior art, no effective technical measure is provided for how to improve the connection reliability of the damper hammer head and the steel strand so as to adapt to the problem of expansion with heat and contraction with cold caused by great temperature difference change day and night. If the problem cannot be effectively solved, the hammerhead and the steel strand are separated due to thermal expansion and cold contraction, so that the damper completely fails, and therefore, how to solve the weather resistance of the damper in the high-altitude area environment becomes a problem to be solved urgently.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the high-weather-resistance damper and the processing method thereof, which can effectively improve the connection reliability of the hammer head and the steel strand so as to enhance the weather resistance of a finished product.

The technical scheme of the invention is as follows: a high-weather-resistance damper comprises a wire clamp body, a wire clamp cover plate, a steel strand and hammers arranged at two ends of the steel strand; the hammer comprises a hammer body and two hammer inner lips, and an inner hole is formed in the end of the hammer body facing the wire clamp body;

the bottom of the inner hole is provided with a jacking component; the end of the steel strand is provided with a crimping pipe, a gap is reserved at one end of the crimping pipe facing the bottom of the inner hole, the gap is a reserved tensioning section, and the outer diameter of the reserved tensioning section is in clearance fit with the inner diameter of the inner hole; the inner diameter of the reserved tensioning section is matched with the jacking component, so that when the steel strand drives the crimping pipe to move towards the bottom of the inner hole, the reserved tensioning section expands and deforms under the action of the jacking component, and interference fit is formed between the deformed reserved tensioning section and the inner hole.

The jacking component is a steel sphere or a cone.

And injecting glue into the inner hole.

The tup that the tup body and two tup inner lips constitute is the integral structure, wholly is the U type, the outer end of tup body is equipped with prevents dizzy circular arc R1, the head end of tup inner lip is equipped with prevents dizzy circular arc R2.

And a plurality of annular grooves are formed in the inner wall of the inner hole.

The wire clamp body is sequentially provided with a first arc groove, a containing groove and a penetrating pipe arranged in the first arc groove from top to bottom, the outer end of the first arc groove is provided with an anti-corona arc R3, the upper portion in the containing groove is provided with a first bolt hole, the bottom of the outer side of the first bolt hole is provided with a water leakage groove, the containing groove is used for containing a wire clamp cover plate, and the middle of the steel strand is penetrated by the penetrating pipe.

The wire clamp cover plate is sequentially provided with a second arc groove and a second bolt hole from top to bottom, the first arc groove and the second arc groove are adaptive to penetrate through a wire, and the first bolt hole and the second bolt hole are adaptive to penetrate through a fastening bolt.

A processing method of a high-weather-resistance damper comprises the following steps:

1) the steel strand penetrates into the wire clamp body, and two ends of the steel strand are respectively sleeved with the crimping pipes; reserving a reserved tensioning section at the outer end of the crimping pipe;

2) injecting glue into the inner hole of the hammer head, and then placing the jacking component;

3) stretching the steel strand with the crimping pipe arranged at the head end into the inner hole, and applying axial acting force on the steel strand or the hammer head;

4) under the action of axial action force, the pipe orifice of the reserved tensioning section of the crimping pipe deforms under the action of the jacking and expanding component to form interference fit;

5) and finishing.

In the step 1), the method further comprises: after the crimping pipe is crimped with the joint of the steel strand, the cross section of the crimping connecting section is hexagonal.

The depth of the jacking and expanding component extruded into the reserved expanding section is about 3/10-3/7 of the diameter of the jacking and expanding component.

During working, a steel strand penetrates through the penetrating pipe in the wire clamp body, two ends of the steel strand are respectively in compression joint with the compression joint pipes, a space is reserved in each compression joint pipe, and then the steel strand is compressed and connected into a hexagonal cross section at two ends of the penetrating pipe and a joint of the compression joint pipes in the wire clamp body, so that the steel strand, the wire clamp body and the compression joint pipes are connected into a whole; glue is injected into the inner hole of the hammer head, a jacking component is arranged in the inner hole, the steel strand is connected with the crimping pipe and then is placed into the inner hole of the hammer head for extrusion, the jacking component is embedded into the reserved tensioning section, the end part of the reserved tensioning section is deformed by force to form a horn mouth, and the edge of the horn mouth is embedded into the inner wall of the inner hole to enable the wire clamp body, the steel strand, the crimping pipe and the hammer head to form a whole.

The invention has the advantages of ingenious design and convenient installation, and the hammerhead of the damper and the steel strand are completely connected into a whole under the condition of injecting glue into the inner hole by embedding the compression-joint pipe and the jacking component into the inner wall of the inner hole of the hammerhead in a compression-joint deformation mode. Particularly, the technical measures adopted by the invention form a connection form of 'strong interference fit' in the hammer head, the technological measures are exquisite, the operation is simple and convenient, and the connection between the hammer head and the steel strand is stable and reliable, so that the vibration damper structure can effectively cope with the high-altitude area environment generating metal fatigue caused by large temperature difference and has strong weather resistance.

Drawings

Figure 1 is a schematic view of the structure of the present invention,

figure 2 is a schematic structural view of the hammer head and the steel strand in the present invention,

figure 3 is a cross-sectional view taken along line a-a of figure 1,

fig 4 is a schematic view of the structure of the hammer head of the present invention,

figure 5 is a top view of figure 4,

figure 6 is a schematic structural view of the body of the clamp of the present invention,

figure 7 is a cross-sectional view taken along line B-B of figure 6,

figure 8 is a rear view of figure 6,

figure 9 is a schematic view of the construction of the cleat cover plate,

figure 10 is a left side view of figure 9,

figure 11 is a rear view of figure 9,

figure 12 is a schematic view of the structure of the clamp body and steel strands of the present invention,

figure 13 is a cross-sectional view taken along line D-D of figure 12,

figure 14 is a cross-sectional view taken along line E-E of figure 12,

figure 15 is a first schematic view of the crimp tube and steel strand connection of the present invention,

figure 16 is a second schematic view of the crimp tube and steel strand connection of the present invention,

figure 17 is a schematic view of the invention with a steel ball placed in the bore of the hammer head,

figure 18 is a schematic view of a crimped steel strand placed in a hammer head according to the present invention,

FIG. 19 is a schematic view of the present invention of a pressing pipe for pressing steel balls and hammers,

figure 20 is an enlarged schematic view of the jacking region of figure 19,

fig. 21 shows an optimized embodiment of the hammer head inner hole in the invention.

In the figure, 1-steel strand, 2-hammer head, 21-hammer head body, 211-inner hole, 2111-annular groove, 22-hammer head inner lip, 3-wire clamp body, 31-arc groove I, 32-bolt hole I, 33-penetrating pipe, 34-accommodating groove, 35-water leakage groove, 4-wire clamp cover plate, 41-arc groove II, 42-bolt hole II, 5-wire, 6-crimping pipe, 61-reserved tensioning section and 7-jacking component.

L represents the length of the reserved tensioning section, and F represents the external force applied by crimping.

Detailed Description

The invention is further described by combining the attached figures 1-21, and the high-weather-resistance damper comprises a wire clamp body 3, a wire clamp cover plate 4, a steel strand 1 and hammer heads 2 arranged at two ends of the steel strand 1; the hammer head 2 comprises a hammer head body 21 and two hammer head inner lips 22, and an inner hole 211 is formed in the end of the hammer head body 21 facing the wire clamp body 3;

the bottom of the inner hole 211 is provided with a jacking component 7; the end of the steel strand 1 is provided with a crimping pipe 6, a gap is reserved at one end, facing the bottom of the inner hole 211, of the crimping pipe 6, the gap is a reserved tensioning section 61, and the reserved tensioning section 61 is used for reserving an L-shaped length pipe to deform and form interference fit with the inner hole 211; the outer diameter of the reserved tensioning section 61 is in clearance fit with the inner diameter of the inner hole 211; the inner diameter of the reserved tensioning section 61 is matched with the jacking component 7, so that when the steel strand 1 drives the crimping pipe 6 to move towards the bottom of the inner hole 211, the reserved tensioning section 61 expands and deforms under the action of the jacking component 7, and interference fit is formed between the deformed reserved tensioning section 61 and the inner hole 211.

Therefore, the hammer head 2 and the steel strand 1 are completely connected into a whole, the reliable connection of the hammer head 2 and the steel strand 1 is finally realized, and the connection strength of the damper is improved.

The jacking component 7 is a steel sphere or a cone. The jacking and expanding component 7 is provided with the shape which is convenient for the reserved expanding section 61 to extend into and deform, and forms interference fit with the inner hole 211.

Glue is injected into the inner hole 211. The glue injection makes the components in the inner hole 211 condensed into a complete whole.

The hammer head body 21 and the two hammer head inner lips 22 form the hammer head which is of an integrated structure and is integrally U-shaped, the outer end of the hammer head body 21 is provided with an anti-corona arc R1, and the head end of the hammer head inner lip 22 is provided with an anti-corona arc R2. The anti-corona arc R1 and the anti-corona arc R2 are used for preventing corona discharge at the hammer head 2.

A plurality of annular grooves are arranged on the inner wall of the inner hole 211. The annular groove 2111 is used for accommodating the deformed bell-mouthed edge of the crimping pipe 6, so that the deformed crimping pipe 6 is fully embedded and connected with the inner wall of the inner hole 211 of the hammer head 2 to prevent falling.

The wire clamp body 3 is sequentially provided with a first arc groove 31, a containing groove 34 and a penetrating pipe 33 arranged in the first arc groove 31 from top to bottom, an anti-corona arc R3 is arranged at the outer end of the first arc groove 31, a first bolt hole 32 is arranged at the upper part in the containing groove 34, a water leakage groove 35 is arranged at the bottom of the outer side of the first bolt hole 32, a wire clamp cover plate 4 is contained in the containing groove 34, and the penetrating pipe 33 penetrates through the middle of the steel strand 1.

The wire clamp cover plate 4 is sequentially provided with a second arc groove 41 and a second bolt hole 42 from top to bottom, the first arc groove 31 and the second arc groove 41 are matched and used for penetrating the wire 5, and the first bolt hole 32 and the second bolt hole 42 are matched and used for penetrating the fastening bolt. The fastening bolts enable the clamp body 3 and the clamp cover plate 4 to clamp the lead 5 to be fixed.

The corresponding positions of the upper parts of the outer sides of the wire clamp body 3 and the wire clamp cover plate 4 are respectively provided with an anti-corona arc R4 and an anti-corona arc R5.

A processing method of a high-weather-resistance damper comprises the following steps:

1) the steel strand 1 penetrates into the wire clamp body 3, and two ends of the steel strand 1 are respectively sleeved with a crimping pipe 6; reserving a reserved tensioning section 61 at the outer end of the crimping pipe 6; at the moment, compression molding is carried out on the connecting parts of the steel strand 1, the penetrating pipe 33 and the crimping pipe 6 in the wire clamp body 3 respectively, so that the connection is reliable;

2) injecting glue into the inner hole 211 of the hammer head 2, and then placing the jacking component 7;

3) the steel strand 1 with the crimping pipe 6 arranged at the head end is stretched into the inner hole 211, and axial acting force is applied to the steel strand 1 or the hammer 2;

4) under the action of axial action force, the pipe orifice of the reserved tensioning section 61 of the crimping pipe 6 deforms under the action of the jacking component 7 to form interference fit; the reserved tensioning section 61 deforms under the action of the jacking and expanding part 7, the port part of the reserved tensioning section 61 forms a bell mouth shape, and the jacking and expanding part 7, the bell mouth edge of the reserved tensioning section 61 and the inner wall of the inner hole 211 of the hammer head 2 form interference fit, so that effective connection and fixation are formed;

5) and finishing.

In step 1), the method further comprises the following steps: after the crimping pipe 6 is crimped with the joint of the steel strand 1, the cross section of the crimping connection section is hexagonal. In addition, both sides of the through pipe 33 and the steel strand 1 are also pressed into a hexagonal cross section together with the steel strand 1. After the compression joint is carried out by the compression joint pipe 6, the shape is changed from a circle to an inscribed hexagon, the size of the minimum opposite side is reduced by 13.3 percent, and the compression joint pipe 6 and the steel strand 1 form a whole.

The depth of the jacking and expanding component 7 extruded into the reserved expansion section is about 3/10-3/7 of the diameter of the jacking and expanding component 7. The effectiveness of interference fit connection generated by deformation of the crimping pipe 6 is ensured.

The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.