CN215452461U - Anti-drop strain clamp - Google Patents
Anti-drop strain clamp Download PDFInfo
- Publication number
- CN215452461U CN215452461U CN202121898272.XU CN202121898272U CN215452461U CN 215452461 U CN215452461 U CN 215452461U CN 202121898272 U CN202121898272 U CN 202121898272U CN 215452461 U CN215452461 U CN 215452461U
- Authority
- CN
- China
- Prior art keywords
- nut
- truncated cone
- strain clamp
- drainage plate
- taper hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001125 extrusion Methods 0.000 description 12
- 238000013021 overheating Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Clamps And Clips (AREA)
Abstract
The utility model discloses an anti-falling strain clamp, which relates to the technical field of electric power fittings and comprises a pipe body with a first drainage plate, a second drainage plate, a screw and an anti-falling nut assembly, wherein the second drainage plate is connected with a drainage wire; the anti-drop nut assembly comprises an outer nut and an inner nut, the outer nut is provided with an inner taper hole, the outer edge of the inner nut is provided with a circular truncated cone, and after the inner nut is assembled into the outer nut, the inner taper hole extrudes the circular truncated cone to enable the inner nut to have a movement trend away from the outer nut.
Description
Technical Field
The utility model belongs to the technical field of electric power fittings, and further relates to an anti-falling strain clamp.
Background
The strain clamp is a hardware fitting used for fixing a lead on an overhead line and hanging the lead on an insulator string, and the hardware fitting is required to bear the tensile force of the lead and bear load current. The strain clamp is generally used for strain towers, and is tightly attached to the strain towers through two drainage plates through bolt connection, so that contact flow guiding is realized.
Li Xue of North China Power university makes statistics on overheating conditions and wire clamp torque conditions of a 110kV north new line clamp in Beijing area, and finds that bolt torque of a wire clamp in an actual line is generally unqualified through a strain clamp temperature rise experiment and a statistical result, and the temperature of the wire clamp rises when the torque is lower. The drainage plate and the drainage plate which are connected through the bolt are in poor contact, the contact surface between the drainage plate and the drainage plate is too small due to loosening and falling of the bolt, overheating is caused, and serious harm is brought to safe operation of a circuit.
SUMMERY OF THE UTILITY MODEL
Therefore, the application provides an anticreep strain clamp, can prevent that two drainage plates of strain clamp are not hard up to drop. The application solves the problem with the following technical points:
an anti-falling strain clamp comprises a pipe body with a first drainage plate, a second drainage plate, a screw and an anti-falling nut assembly, wherein the second drainage plate is connected with a drainage wire; the anti-drop nut assembly comprises an outer nut and an inner nut, the outer nut is provided with an inner taper hole, the outer edge of the inner nut is provided with a circular truncated cone, and after the inner nut is assembled into the outer nut, the inner taper hole extrudes the circular truncated cone to enable the inner nut to have a movement trend away from the outer nut.
As mentioned above, this application provides an anticreep strain clamp, similar with prior art, also through bolted connection between this strain clamp's first drainage plate and the second drainage plate. However, the existing strain clamp is exposed in the outdoor environment all the year round, and under the lasting effect of external forces such as wind load and the like, the traditional nut is easy to loosen and fall off relative to the screw rod under the corrosion of liquid such as rainwater and the like, so that the first drainage plate and the second drainage plate are not tightly attached to each other, the contact surface between the drainage plates is too small, overheating is caused, and serious harm is brought to the safe operation of a circuit. For this reason, in this scheme, adopted the pretightning force effect better, prevented more that the anticreep nut component that the bolt drops from pressing from both sides tightly two drainage plates. Specifically, the anti-drop nut assembly comprises an outer nut and an inner nut, wherein the outer nut is provided with an inner conical hole, the outer edge of the inner nut is provided with a circular truncated cone, after the inner nut is assembled in the outer nut, the circular truncated cone is extruded by the inner conical hole, an extrusion force is applied to the circular truncated cone, and the extrusion force acts on the inclined surface of the circular truncated cone, so that the inner nut has a movement trend away from the outer nut. Meanwhile, the circular truncated cone also obtains an extrusion horizontal component force, so that the inner nut tightly embraces the bolt connected with the inner nut, and the anti-loosening and anti-falling performance of the anti-falling nut component relative to the bolt is further improved.
The further technical scheme is as follows:
the outer nut still has the locking ring, the internal diameter of locking ring is less than the maximum diameter of interior taper hole, the internal diameter of locking ring also is less than the maximum diameter of round platform, and the locking ring is connected with the major diameter end of interior taper hole and is formed the step. Due to the arrangement of the inner taper hole and the circular truncated cone, after the inner nut is installed on the outer nut, the inner taper hole extrudes the circular truncated cone, so that the inner nut has a movement trend away from the outer nut. The locking ring of the outer nut is connected with the large-diameter end of the inner taper hole to form a step which can support against the large end face of the circular truncated cone. Because the circular truncated cone is extruded by the inner taper hole and is subjected to axial force, the axial force is applied to the screw rod through the step of the outer nut, and the axial deformation of the screw rod caused by the axial force further strengthens the close fit between the outer nut and the drainage plate. The arrangement of the locking ring also limits the displacement of the inner nut and prevents the inner nut from being pushed out of the outer nut.
In can assembling to interior taper hole for guaranteeing the round platform, set up to: the depth of the inner taper hole is larger than the height of the circular truncated cone.
The inner nut is further provided with a connecting column and an end platform which are coaxially arranged with the circular truncated cone, the connecting column is connected with the large-diameter end and the end platform of the circular truncated cone, and the length of the connecting column is larger than the depth of the locking ring. The arrangement of the end table can be beneficial to the working personnel to assemble the circular truncated cone into the inner conical hole.
For making interior taper hole can extrude the round platform, set up to: the taper of the inner taper hole is smaller than that of the round table.
The circular truncated cone is provided with a variable groove along the axis direction from the small-diameter end thereof. The shape of the circular truncated cone can be changed by the arrangement of the deformation groove so as to adapt to the inner taper hole with smaller taper.
The number of the deformation grooves is three, and the deformation grooves are evenly and circumferentially arrayed with the axis of the circular truncated cone as the center. The technical characteristics are that the extrusion force on each circular truncated cone section divided by the deformation groove is uniform, and the resultant force of the extrusion force of each circular truncated cone section can strictly point to the axial direction of the circular truncated cone.
Internal threads are formed in the outer nut and the inner nut.
Because the inner taper hole extrudes the circular truncated cone at the inner taper hole, the inner nut has a larger diameter in the direction of the movement trend away from the outer nut, and if the size of the outer nut is unchanged, the thickness of the outer nut is thinner. And the outer nut can receive the extrusion counter-force of round platform, in order to avoid the outer nut inefficacy, sets up to: the diameter of the outer edge of the outer nut is gradually increased in the direction that the inner taper hole extrudes the circular truncated cone to enable the inner nut to have a movement trend away from the outer nut.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model has reasonable structure and safe and convenient use. The utility model provides an anti-falling strain clamp, which is characterized in that an anti-falling nut assembly which has a better pretightening force effect and can prevent a bolt from falling off is adopted to clamp two drainage plates. The anti-drop nut assembly comprises an outer nut and an inner nut, wherein the outer nut is provided with an inner taper hole, the outer edge of the inner nut is provided with a circular truncated cone, after the inner nut is assembled in the outer nut, the circular truncated cone is extruded by the inner taper hole, an extrusion force is applied to the circular truncated cone, and the extrusion force acts on the inclined plane of the circular truncated cone, so that the inner nut has a movement trend away from the outer nut. Meanwhile, the circular truncated cone also obtains an extrusion horizontal component force, so that the inner nut tightly embraces the bolt connected with the inner nut, and the anti-loosening and anti-falling performance of the anti-falling nut component relative to the bolt is further improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.
FIG. 1 is a schematic view of a strain clamp;
FIG. 2 is an assembly view of the anti-drop nut;
FIG. 3 is a three-dimensional schematic view of an inner nut;
in the figure: 1. a pipe body; 2. a first drainage plate; 3. a second drainage plate; 4. a screw; 5. an anti-drop nut assembly; 51. an outer nut; 511. an inner taper hole; 512. a locking ring; 52. an inner nut; 521. a circular truncated cone; 522. connecting columns; 523. an end table; 524. and a deformation groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Example (b):
as shown in fig. 1-3, an anti-drop strain clamp comprises a tube body 1 with a first drainage plate 2, a second drainage plate 3, a screw 4 and an anti-drop nut assembly 5, wherein the second drainage plate 3 is connected with a drainage wire, the first drainage plate 2 is provided with a first through hole, the second drainage plate 3 is provided with a second through hole, and the screw 4 passes through the first through hole and the second through hole to be matched with the anti-drop nut assembly 5 to realize the fixation between the first drainage plate 2 and the second drainage plate 3; the anti-drop nut assembly 5 comprises an outer nut 51 and an inner nut 52, wherein the outer nut 51 is provided with an inner taper hole 511, the outer edge of the inner nut 52 is provided with a circular truncated cone 521, and when the inner nut 52 is assembled in the outer nut 51, the inner taper hole 511 presses the circular truncated cone 521 to enable the inner nut 52 to have a movement tendency away from the outer nut 51.
As mentioned above, this application provides an anticreep strain clamp, similar with prior art, also through bolted connection between this strain clamp's first drainage plate 2 and the second drainage plate 3. However, the existing strain clamp is exposed in the outdoor environment all the year round, and under the lasting effect of external forces such as wind load and the like, the traditional nut is easy to loosen and fall off relative to the screw rod 4 under the corrosion of liquid such as rainwater and the like, so that the first drainage plate 2 and the second drainage plate 3 are not tightly attached to each other, the contact surface between the drainage plates is too small, overheating is caused, and serious harm is brought to the safe operation of a circuit. For this reason, in this scheme, adopted pretightning force effect better, prevented more that anticreep nut component 5 that the bolt drops from pressing from both sides two drainage plates tightly. Specifically, the anti-drop nut assembly 5 comprises an outer nut 51 and an inner nut 52, wherein the outer nut 51 is provided with an inner tapered hole 511, the outer edge of the inner nut 52 is provided with a round table 521, when the inner nut 52 is assembled in the outer nut 51, the inner tapered hole 511 presses the round table 521 to apply a pressing force to the round table 521, and the pressing force acts on the inclined surface of the round table 521 to enable the inner nut 52 to have a movement tendency away from the outer nut 51. Meanwhile, the circular truncated cone 521 also obtains an extrusion horizontal component force, so that the inner nut 52 tightly embraces the connected bolt, and the anti-loosening and anti-falling performance of the anti-falling nut assembly 5 relative to the bolt is further improved.
The further technical scheme is as follows:
the outer nut 51 is further provided with a locking ring 512, the inner diameter of the locking ring 512 is smaller than the maximum diameter of the inner conical hole 511, the inner diameter of the locking ring 512 is also smaller than the maximum diameter of the round table 521, and the locking ring 512 is connected with the large-diameter end of the inner conical hole 511 to form a step. After the inner nut 52 is mounted on the outer nut 51 due to the arrangement of the inner tapered hole 511 and the round table 521, the inner tapered hole 511 presses the round table 521 so that the inner nut 52 has a tendency to move away from the outer nut 51. The locking ring 512 of the outer nut 51 is connected with the large-diameter end of the inner taper hole 511 to form a step which can support the large end surface of the round table 521. Because the circular truncated cone 521 is extruded by the inner taper hole 511 and receives an axial force, the axial force is acted on the screw rod 4 through the step of the outer nut 51, and the axial deformation of the screw rod 4 caused by the axial force further strengthens the close contact between the outer nut 51 and the drainage plate. The provision of the locking ring 512 also limits the displacement of the inner nut 52 from being pushed out of the outer nut 51.
In order to ensure that the circular truncated cone 521 can be assembled into the inner taper hole 511, the following arrangement is adopted: the depth of the inner taper hole 511 is greater than the height of the circular truncated cone 521.
The inner nut 52 is further provided with a connecting column 522 and an end table 523, the connecting column 522 is coaxially arranged with the round table 521, the large-diameter end of the round table 521 is connected with the end table 523, and the length of the connecting column 522 is larger than the depth of the locking ring 512. The provision of the end platform 523 can facilitate the fitting of the circular truncated cone 521 into the inner tapered bore 511 by a worker.
In order to enable the inner taper hole 511 to extrude the round table 521, the following arrangement is adopted: the taper of the inner taper hole 511 is smaller than that of the round table 521.
The circular truncated cone 521 has a deformation groove 524 formed along the axial direction from the small-diameter end thereof. The shape of the circular truncated cone 521 is variable by the deformation groove 524, so that the circular truncated cone 511 with a smaller taper can be adapted.
The number of the deformation grooves 524 is three, and each deformation groove 524 is uniformly and circumferentially arrayed around the axis of the circular truncated cone 521. The technical characteristic is that the extrusion force applied to each round table 521 segment divided by the deformation groove 524 is uniform, and the resultant force of the extrusion force of each round table 521 segment can strictly point to the axial direction of the round table 521.
The outer nut 51 and the inner nut 52 are internally provided with internal threads.
Since the inner tapered hole 511 has a diameter that becomes larger in a direction in which the inner tapered hole 511 presses the round table 521 so that the inner nut 52 has a tendency to move away from the outer nut 51, the thickness of the outer nut 51 becomes thinner if the size of the outer nut 51 is not changed. The male screw 51 receives a pressing reaction force of the circular truncated cone 521, and in order to avoid the failure of the male screw 51, the male screw 51 is provided with: the outer peripheral diameter of the outer nut 51 is gradually increased in a direction in which the inner tapered hole 511 presses the round table 521 so that the inner nut 52 has a tendency to move away from the outer nut 51.
The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, so that the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications based on the present invention by those skilled in the art are within the protection scope of the present invention.
Claims (9)
1. The anti-falling strain clamp is characterized by comprising a pipe body (1) with a first drainage plate (2), a second drainage plate (3), a screw rod (4) and an anti-falling nut assembly (5), wherein the second drainage plate (3) is connected with a drainage wire, a first through hole is formed in the first drainage plate (2), a second through hole is formed in the second drainage plate (3), and the screw rod (4) penetrates through the first through hole and the second through hole to be matched with the anti-falling nut assembly (5) to realize fixation between the first drainage plate (2) and the second drainage plate (3);
the anti-drop nut assembly (5) comprises an outer nut (51) and an inner nut (52), the outer nut (51) is provided with an inner taper hole (511), the outer edge of the inner nut (52) is provided with a circular truncated cone (521), and after the inner nut (52) is assembled in the outer nut (51), the inner taper hole (511) presses the circular truncated cone (521) to enable the inner nut (52) to have a movement tendency away from the outer nut (51).
2. The anti-drop strain clamp as claimed in claim 1, wherein the outer nut (51) further comprises a locking ring (512), the inner diameter of the locking ring (512) is smaller than the maximum diameter of the inner taper hole (511), the inner diameter of the locking ring (512) is also smaller than the maximum diameter of the truncated cone (521), and the locking ring (512) is connected with the large-diameter end of the inner taper hole (511) to form a step.
3. The anti-drop strain clamp as claimed in claim 2, wherein the depth of the inner taper hole (511) is greater than the height of the truncated cone (521).
4. The anti-drop strain clamp is characterized in that the inner nut (52) is further provided with a connecting column (522) and an end table (523), the connecting column (522) and the end table (523) are coaxially arranged with the round table (521), the connecting column (522) is connected with the large-diameter end and the end table (523) of the round table (521), and the length of the connecting column (522) is larger than the depth of the locking ring (512).
5. The anti-drop strain clamp as claimed in claim 2, wherein the taper of the inner taper hole (511) is smaller than the taper of the truncated cone (521).
6. The anti-drop strain clamp as claimed in claim 5, wherein the truncated cone (521) is provided with a deformation groove (524) along an axial direction from a small diameter end thereof.
7. The anti-drop strain clamp as claimed in claim 6, wherein the number of the deformation grooves (524) is three, and each deformation groove (524) is uniformly and circumferentially arrayed around the axis of the truncated cone (521).
8. The anti-drop strain clamp as claimed in claim 1, wherein the outer nut (51) and the inner nut (52) are internally threaded.
9. The anti-drop strain clamp as claimed in claim 1, wherein the diameter of the outer edge of the outer nut (51) is gradually increased in a direction in which the inner taper hole (511) presses the circular truncated cone (521) to make the inner nut (52) have a tendency to move away from the outer nut (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121898272.XU CN215452461U (en) | 2021-08-13 | 2021-08-13 | Anti-drop strain clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121898272.XU CN215452461U (en) | 2021-08-13 | 2021-08-13 | Anti-drop strain clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215452461U true CN215452461U (en) | 2022-01-07 |
Family
ID=79693987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121898272.XU Expired - Fee Related CN215452461U (en) | 2021-08-13 | 2021-08-13 | Anti-drop strain clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215452461U (en) |
-
2021
- 2021-08-13 CN CN202121898272.XU patent/CN215452461U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215452461U (en) | Anti-drop strain clamp | |
| CN217521807U (en) | Lightning arrester convenient to maintain | |
| CN113847324A (en) | Anti-loosening bolt for bridge | |
| CN217029599U (en) | Hexagon nut and coupling assembling | |
| CN208444952U (en) | A kind of round wires conducting wire locking connector | |
| CN219317394U (en) | High-load carbon steel flange bolt | |
| CN207098537U (en) | A kind of non-maintaining strain clamp | |
| CN209896357U (en) | Spiral double-locking connector | |
| CN205753324U (en) | A kind of cable connector | |
| CN210738491U (en) | Reducing joint of hollow sucker rod | |
| CN215409701U (en) | Internal connection type bolt convenient to connect | |
| CN109256741B (en) | Non-armoured underwater photoelectric composite cable sealing and fastening device | |
| CN220895886U (en) | Novel reusable resistance-reducing wire lug | |
| CN219673176U (en) | Adjustable rigging device of flexible photovoltaic support and flexible photovoltaic support | |
| CN105186173A (en) | Reusable single-connection and group-connection cable plug connector of integrated tool type | |
| CN108493632A (en) | A kind of round wires conducting wire locking connector and attaching method thereof | |
| CN205016720U (en) | Singly linking and crowd's line cable embolism joint of circulated use of disjunctor instrument formula | |
| CN205016700U (en) | Locking joint head | |
| CN213206249U (en) | Bolt anti-loosening assembly | |
| CN219739383U (en) | Breakpoint connector for cable laying and maintenance | |
| CN216278920U (en) | Combined anti-loosening thread device | |
| CN220527218U (en) | Conductive cable connection structure and various conductive cable connectors | |
| CN221442257U (en) | Composite cross arm | |
| CN112863767B (en) | Cable insulation forces frock that contracts that moves back | |
| CN219811736U (en) | Heat dissipation anti-loosening cable connection joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220107 |