CN116706814A - Damper and power transmission overhead line - Google Patents

Abstract

The application provides a damper and a power transmission overhead line. The damper includes: the first hammer body comprises a first connecting head; the second hammer body comprises a second connector; the shaft structure comprises an elastic piece with deformation capability, and the first connector and the second connector are matched with the elastic piece; and the clamping structure is connected with the shaft structure and comprises a clamping channel, an included angle is formed between the length extending direction of the clamping channel and the central axis of the shaft structure, and the clamping structure is configured to clamp a wire positioned in the clamping channel. The damper of the technical scheme can solve the problem that the steel strand of the existing damper is easy to deform and lose efficacy when receiving a large impact force.

Description

Damper and power transmission overhead line

Technical Field

The application relates to the technical field of power transmission accessories, in particular to a damper and a power transmission overhead line.

Background

The vibration damper is a mechanical protection hardware which is hung at a certain distance from the outlet of a wire and a ground wire clamp of an overhead transmission line, and can inhibit or reduce dynamic bending strain values generated on the outlet of the wire and the ground wire clamp by breeze vibration so as to prevent fatigue damage of the wire and further prevent accidents such as strand breakage, hardware damage, line short circuit and the like of the wire caused by vibration.

In the prior art known to the inventors, the damper is mainly composed of a hammer head, a wire clamp, and a steel strand. Two hammerheads are respectively riveted and fixed at two ends of the steel strand, the two hammerheads are used as inertial mass bodies, and the steel strand is used as a damping element. When the damper is hung on the wire, the damper vibrates under the action of wind, ice and other factors, and moves along with the wire to generate a force which is asynchronous with or even opposite to the vibration of the wire, so that the amplitude of the wire is reduced, and the vibration of the wire is reduced or eliminated. The two hammerheads of the damper adopted in the current industry are connected through the steel strand, the diameter of the steel strand is generally 7.5 mm-16 mm, the inhibition effect on breeze vibration of the wire can be generally ensured in the process of running the wire, but when the wire is erected in a heavy ice area, the situation of ice-removing jump occurs in the ice-removing process after the ground wire is covered with ice, large impact force is formed on the steel strand of the damper, and fatigue deformation failure easily occurs after the steel strand is repeatedly impacted, so that the vibration resistance of the damper is greatly reduced, and the safety of the power transmission line is seriously threatened.

Disclosure of Invention

The application mainly aims to provide a damper and a power transmission overhead line, which can solve the problem that a steel strand of the existing damper is easy to deform and lose efficacy when receiving a large impact force.

In order to achieve the above object, according to an aspect of the present application, there is provided a damper comprising: the first hammer body comprises a first connecting head; the second hammer body comprises a second connector; the shaft structure comprises an elastic piece with deformation capability, and the first connector and the second connector are matched with the elastic piece; and the clamping structure is connected with the shaft structure and comprises a clamping channel, an included angle is formed between the length extending direction of the clamping channel and the central axis of the shaft structure, and the clamping structure is configured to clamp a wire positioned in the clamping channel.

Further, the first connecting head is provided with a first mounting hole, the second connecting head is provided with a second mounting hole, the shaft structure further comprises a shaft body, the first end of the elastic piece is elastically supported between the inner wall of the first mounting hole and the periphery of the shaft body, and the second end of the elastic piece is elastically supported between the inner wall of the second mounting hole and the periphery of the shaft body.

Further, the periphery of the shaft body is provided with a containing groove, and the elastic piece is positioned in the containing groove.

Further, the elastic piece includes first buffer post and second buffer post, and first buffer post elastic support is between the inner wall of first mounting hole and the periphery of axle body, and when first connector rotated for the axle body, the inner wall of first mounting hole can extrude first buffer post, and the second buffer post supports between the inner wall of second mounting hole and the periphery of axle body, and when the second connector rotated for the axle body, the inner wall of second mounting hole can extrude second buffer post.

Further, a separation block is further arranged on the shaft body, the separation block is connected with the shaft body and forms a first groove and a second groove which are arranged along the central axis, the first buffer column is located in the first groove, and the second buffer column is located in the second groove.

Further, the periphery of the shaft body is provided with a plurality of accommodating grooves, the elastic pieces are also a plurality of, and at least one elastic piece is accommodated in one accommodating groove.

Further, a first clamping groove is formed in one side, facing the shaft body, of the clamping structure, and a first clamping block is arranged on one side, facing the clamping structure, of the shaft body and located in the first clamping groove.

Further, the damper further comprises an end cover, the first connector and the second connector are located between the clamping structure and the end cover, one of the end cover and the clamping structure covers one side of the first mounting hole, which is away from the second mounting hole, and the other of the end cover and the clamping structure covers one side of the second mounting hole, which is away from the first mounting hole.

Further, a second clamping groove is formed in one side, facing the shaft body, of the end cover, a second clamping block is arranged on one side, facing the end cover, of the shaft body, and the second clamping block is located in the second clamping groove.

Further, the shaft structure comprises a connecting shaft connected with the shaft body, a first end of the connecting shaft is connected with the clamping structure, and a second end of the connecting shaft is connected with the end cover.

Further, a limiting structure is arranged between the first connector and the second connector and used for limiting the rotation limit positions of the first hammer body and the second hammer body.

Further, the limit structure comprises a first limit rib and a second limit rib, the first limit rib is arranged on one side of the first connector, which faces the second connector, the second limit rib is arranged on one side of the second connector, which faces the first connector, a first rotating gap is kept between the first end of the first limit rib and the first end of the second limit rib, a second rotating gap is kept between the second end of the first limit rib and the second end of the second limit rib, and the first limit rib and the second limit rib are configured to limit the rotating limits of the first connector and the second connector in a mutually contact mode.

Further, the clamping structure comprises a third connector, a third extension section, a clamp head, a pressing block and a locking piece, wherein the third connector, the third extension section and the clamp head are sequentially connected, a clamping channel capable of clamping a wire is formed between the clamp head and the pressing block, and the pressing block and the clamp head are of a split structure or are rotatably arranged relative to the clamp head.

Further, the first hammer body further comprises a first extending section and a first hammer head, the first connecting head, the first extending section and the first hammer head are sequentially connected, the arrangement direction of the first extending section and the first hammer head is perpendicular to the central axis of the shaft structure, the second hammer body further comprises a second extending section and a second hammer head, the second connecting head, the second extending section and the second hammer head are sequentially connected, the arrangement direction of the third is perpendicular to the central axis of the shaft structure, the mass of one of the first hammer head and the second hammer head is larger than the mass of the other of the first hammer head and the second hammer head, the length of one of the first extending section and the second extending section is larger than the length of the other of the first extending section and the second hammer head, and the first hammer body and the second hammer body are located on the same side of the clamping structure.

In order to achieve the above object, according to another aspect of the present application, there is provided a power transmission overhead line including a wire and the damper described above, the wire being located in a clamping passage of a clamping structure and being clamped by the clamping structure.

By applying the technical scheme of the application, when the wire vibrates up and down under the action of wind, ice and other factors, the first hammer body and the second hammer body rotate relatively along with the vibration of the wire, so that the amplitude of the wire is reduced, the vibration of the wire is weakened or eliminated, and accidents such as strand breakage, hardware damage, line short circuit and the like caused by the vibration of the wire are prevented. When the wire is erected in the heavy ice area, the situation of ice-removing jump can occur after the wire is covered with ice to cause great oscillation, because the shaft structure is connected between the first hammer body and the second hammer body, under the elastic action of the elastic piece, the larger impact force received by the first hammer body and the second hammer body can be absorbed by the elastic piece, after the impact force disappears, the elastic piece is restored to the original state through the self elastic deformation capability, compared with a steel strand, the situation that the elastic piece of the shaft structure is not deformed and fails due to the impact force is avoided, so that the damper always keeps enough vibration-proof function, the required vibration-proof effect is achieved, and the damper can continuously conduct vibration-proof on the wire, and the safety of a power transmission line is ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

fig. 1 shows a schematic structural view of a damper according to an embodiment of the present application;

FIG. 2 shows a schematic view of the damper of FIG. 1 at another angle;

FIG. 3 illustrates a front view of the first ram, second ram, and shaft configuration of the damper of FIG. 1 in combination;

FIG. 4 shows a schematic view of the structure of FIG. 3 at another angle;

FIG. 5 shows a left side view of the engagement of the clamping structure of the damper of FIG. 1 with the shaft body;

FIG. 6 shows a cross-sectional view of A-A of FIG. 5;

fig. 7 shows a schematic structural view of a shaft structure of the damper of fig. 1;

fig. 8 shows a schematic structural view of a clamping structure of the damper of fig. 1;

fig. 9 shows a right side view of fig. 8;

fig. 10 shows a rear view of the end cap of the damper of fig. 1;

FIG. 11 is a schematic view showing the construction of a first ram of the damper of FIG. 1; and

fig. 12 shows a schematic structural view of a second ram of the damper of fig. 1.

Wherein the above figures include the following reference numerals:

10. a first ram; 11. a first connector; 12. a first mounting hole; 13. the first limit rib; 14. a first extension; 15. a first hammer head; 20. a second hammer; 21. a second connector; 22. a second mounting hole; 23. the second limit rib; 24. a second extension; 25. a second hammer head; 30. a shaft structure; 31. a shaft body; 32. an elastic member; 321. a first buffer column; 322. a second buffer column; 33. a connecting shaft; 34. a first clamping block; 35. a second clamping block; 36. a separation block; 40. a clamping structure; 41. a third connector; 42. a third extension; 43. a chuck; 44. briquetting; 45. a locking member; 46. a first wire chase; 47. a second wire slot; 48. a first clamping groove; 49. a first threaded hole; 50. an end cap; 51. a second clamping groove; 52. and a third threaded hole.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

It should be noted that, the span of the high-voltage overhead line is larger, the tower is also higher, and when the wire is vibrated under the action of factors such as wind, ice, etc., the working condition of the wire hanging position is most unfavorable. Long-time and periodic vibration can cause fatigue damage to the wire, cause breakage of strands and wires of the wire, and sometimes strong vibration can damage hardware fittings and insulators. In order to prevent and alleviate the vibration of the wire, a certain number of damper is generally installed near the wire suspension clamp, and when the wire vibrates, the damper moves up and down to generate an action force which is asynchronous with or even opposite to the vibration of the wire, so that the amplitude of the wire can be reduced, and even the vibration of the wire can be eliminated.

Referring to fig. 1 and 2, and fig. 11 and 12 in combination, the present application provides a damper. The damper of this embodiment includes: a first ram 10 including a first connector 11; a second ram 20 including a second connector 21; the shaft structure 30, the first connector 11 and the second connector 21 are rotatably arranged around the central axis of the shaft structure 30, the shaft structure 30 comprises an elastic piece 32 with deformation capability, and the first connector 11 and the second connector 21 are matched with the elastic piece 32; and a clamping structure 40 connected with the shaft structure 30, the clamping structure 40 including a clamping channel, a length extending direction of the clamping channel forming an included angle with a central axis of the shaft structure 30, the clamping structure 40 being configured to clamp a wire located in the clamping channel.

In the above technical solution, the first hammer body 10 and the second hammer body 20 can both rotate around the shaft structure 30, and due to the positional relationship between the shaft structure 30 and the clamping channel, the vibration-proof direction of the vibration damper is the up-down direction, when the wire is vibrated up and down under the action of wind, ice and other factors, the first hammer body and the second hammer body rotate relatively along with the vibration of the wire, so as to reduce the amplitude of the wire, thereby weakening or eliminating the vibration of the wire, and preventing the wire from breaking, hardware damage, line short-circuit and other accidents caused by the vibration. When the wire is erected in the heavy ice area, the wire is pulled by the gravity of ice after being covered with ice, the tension of the wire to the wire is suddenly disappeared in the process of deicing the wire, the wire is caused to receive vertical upward impact force, the condition of deicing jump can occur to cause great oscillation, because the shaft structure is connected between the first hammer body and the second hammer body, under the elastic action of the elastic element, the larger impact force received by the first hammer body and the second hammer body can be absorbed by the elastic element, after the impact force disappears, the elastic element is restored to the original state through the self elastic deformation capability, compared with a steel strand, the elastic element of the shaft structure is free from the condition of deformation failure caused by the impact force, so that the damper always maintains enough vibration-proof function, the required vibration-proof effect is achieved, and the vibration damper can continuously conduct vibration-proof on the wire, and the safety of a power transmission line is ensured.

In another embodiment, the included angle between the length extending direction of the clamping channel and the central axis of the shaft structure 30 is 90 °, and the length extending direction of the clamping channel and the central axis direction of the shaft structure 30 are respectively in two mutually perpendicular planes, so that when the first hammer 10 and the second hammer 20 are located in the same straight line, the straight line is parallel to the wire, and the wire can have better vibration-proof effect and higher efficiency when the wire vibrates up and down under the action of wind, ice and other factors.

Referring to fig. 3, 4, 7, 11 and 12 in combination, in one embodiment of the present application, the first connector 11 is provided with a first mounting hole 12, the second connector 21 is provided with a second mounting hole 22, the shaft structure 30 further includes a shaft body 31, a first end of the elastic member 32 is elastically supported between an inner wall of the first mounting hole 12 and an outer periphery of the shaft body 31, and a second end of the elastic member 32 is elastically supported between an inner wall of the second mounting hole 22 and an outer periphery of the shaft body 31.

In the above-described embodiments, the elastic member 32 is used to support the first ram 10 and the second ram 20, and the first ram 10 and the second ram 20 are supported by the elastic member 32 in a stationary state with respect to the shaft structure 30 without external force, and at this time, the first ram 10 and the second ram 20 are not in contact with each other. When an external force is applied, the first hammer 10 and the second hammer 20 rotate, the inner wall of the first mounting hole 12 and the inner wall of the second mounting hole 22 squeeze the elastic element 32, and the space generated by deformation of the elastic element 32 is the space for the rotation of the first hammer 10 and the second hammer 20, i.e. the space for the rotation of the first hammer 10 and the second hammer 20 is provided by the elastic element 32.

Through the above arrangement, on the one hand, when the damper vibrates, the elastic member 32 can prevent the first hammer 10 and the second hammer 20 from being forced and from hard collision with the shaft body 31, that is, the elastic member 32 plays a role in buffering and protecting the first hammer 10, the second hammer 20 and the shaft body 31, so as to prevent the first hammer 10, the second hammer 20 and the shaft body 31 from being damaged or failed due to hard collision; on the other hand, when the damper is not subjected to an external force, the elastic member 32 can maintain the first ram 10 and the second ram 20 at a position where they do not contact each other, preventing friction from being generated by long-term contact of the first ram 10 and the second ram 20, and affecting the quality of the first ram 10 and the second ram 20; on the other hand, the shaft body 31 is a rigid member that supports the elastic member 32, so that the elastic member 32 can be smoothly pressed, and so that the first ram 10 and the second ram 20 can be held in a stationary position by the hard wall surface of the shaft body 31.

Referring to fig. 7 in combination, in one embodiment of the present application, the outer circumference of the shaft body 31 is provided with a receiving groove, and the elastic member 32 is located in the receiving groove.

In the above technical solution, the accommodating groove provides an accommodating space for the elastic member 32, so that the spatial arrangement of the shaft structure 30 is more compact. The elastic member 32 is attached to the bottom of the accommodating groove, when the elastic member 32 is pressed, pressure is generated on the bottom of the accommodating groove, deformation occurs through the support of the bottom of the accommodating groove, and when the elastic member 32 is not subjected to external force, the elastic member can be restored to the original state through the support of the bottom of the accommodating groove and the self elastic force.

Referring to fig. 3, 4 and 7 in combination, in one embodiment of the present application, the elastic member 32 includes a first buffer post 321 and a second buffer post 322, the first buffer post 321 is elastically supported between an inner wall of the first mounting hole 12 and an outer circumference of the shaft body 31, the inner wall of the first mounting hole 12 can press the first buffer post 321 when the first coupling head 11 rotates with respect to the shaft body 31, the second buffer post 322 is supported between an inner wall of the second mounting hole 22 and the outer circumference of the shaft body 31, and the inner wall of the second mounting hole 22 can press the second buffer post 322 when the second coupling head 21 rotates with respect to the shaft body 31.

In the above technical solution, when the first hammer 10 and the second hammer 20 rotate, the first buffer post 321 and the second buffer post 322 are respectively extruded, when the first buffer post 321 is extruded and deformed, the second buffer post 322 is not affected, otherwise, when the second buffer post 322 is extruded and deformed, the first buffer post 321 is not affected, thus, when the first hammer 10 rotates, only the first buffer post 321 is extruded, the second hammer 20 is not rotated due to the rotation of the first hammer 10, and further, the first hammer 10 and the second hammer 20 respectively form two mutually independent rotating structures, at the positions of the first connector 11 and the second connector 21, the two cannot affect each other, and other factors are avoided to cause interference to the first hammer 10 and the second hammer 20.

In another embodiment, the first buffering post 321 and the second buffering post 322 are both rubber posts, the rubber material is a material with better resilience, and after the first hammer 10 and the second hammer 20 rotate, the first buffering post 321 and the second buffering post 322 of the rubber material can better provide the force of the rotation direction for the first hammer 10 and the second hammer 20 by using the self resilience, so that the first hammer 10 and the second hammer 20 can be recovered to the initial state more quickly.

The shaft body 31 is a cross shaft, and the accommodating groove is a groove formed at four outer corners of the cross shaft. The cross shaft is a component in the prior art, meets the requirement of the shaft body 31, and is convenient to obtain, so that the cross shaft is selected as the shaft body 31.

Referring to fig. 3, 4 and 7 in combination, in one embodiment of the present application, the shaft body 31 is further provided with a separation block 36, and the separation block 36 is connected to the shaft body 31 and forms a first groove and a second groove disposed along the central axis, and the first buffer post 321 is located in the first groove and the second buffer post 322 is located in the second groove.

In the above technical solution, on the one hand, the first buffer post 321 and the second buffer post 322 are separated by the separation block 36, and the first buffer post 321 and the second buffer post 322 are supported by the wall surface of the separation block 36 in addition to the bottom of the accommodating groove, so that the deformation areas of the first buffer post 321 and the second buffer post 322 are limited in the groove formed by the accommodating groove and the separation block 36, that is, the deformation of the first buffer post 321 and the second buffer post 322 when being extruded is the deformation in the controllable range, and further the rotation amplitude of the first hammer 10 and the second hammer 20 is in the controllable range; on the other hand, the first buffer post 321 is limited in the first groove by the separation block 36, the second buffer post 322 is limited in the second groove, and therefore, under the condition that the first buffer post 321 and the second buffer post 322 are stressed for a long time, the first buffer post 321 and the second buffer post 322 cannot deviate in relative position, even if the first buffer post 321 is always extruded by the inner wall of the first mounting hole 12, the second buffer post 322 is always extruded by the inner wall of the second mounting hole 22, and further, the first hammer 10 and the second hammer 20 can be independently rotated, and interference cannot be generated between the first buffer post 321 and the second buffer post 322.

Specifically, the dividing block 36 divides the accommodating groove uniformly in the length direction into a first groove and a second groove of the same size.

Referring to fig. 3, 4 and 7 in combination, in one embodiment of the present application, the outer circumference of the shaft body 31 is provided with a plurality of receiving grooves, and the elastic members 32 are also plurality, and at least one elastic member 32 is received in one receiving groove.

Through the setting of a plurality of elastic pieces 32, every elastic piece 32 only need with an accommodation groove looks adaptation, does not need the elastic piece 32 to be with the complicated wall looks adaptation of whole axle body 31, the preparation of elastic piece 32 of being convenient for. In addition, each elastic piece 32 is of an independent split type, after the elastic piece 32 in a certain accommodating groove fails or is damaged, the elastic piece 32 can be replaced only, the elastic pieces 32 in all accommodating grooves are not required to be replaced, and materials are saved.

In another embodiment, as shown in fig. 7, the number of the first buffer columns 321 and the number of the second buffer columns 322 of the elastic member 32 are four, the number of the receiving grooves is four, and the four receiving grooves are uniformly arranged along the circumferential direction of the shaft body 31, for example, the cross shaft, and the dividing blocks 36 are also four and respectively arranged in the four receiving grooves to divide the four receiving grooves into four first grooves and four second grooves.

In another embodiment, the separation block 36 and the shaft body 31 are integrally formed, so that the shaft body 31 is more compact in structure and more stable in supporting the first buffer post 321 and the second buffer post 322.

Referring to fig. 5, 6 and 8 in combination, in one embodiment of the present application, a first clamping groove 48 is formed on a side of the clamping structure 40 facing the shaft body 31, and a first clamping block 34 is disposed on a side of the shaft body 31 facing the clamping structure 40, where the first clamping block 34 is located in the first clamping groove 48.

In the above-mentioned technical solution, on the one hand, the first clamping groove 48 is used for positioning the circumferential position of the shaft body 31; on the other hand, the engagement of the first locking groove 48 and the first locking piece 34 can prevent the shaft body 31 from being rotated by the influence of the first ram 10 and the second ram 20.

Specifically, the first clamping groove 48 is a rectangular groove, the first clamping block 34 is a rectangular block, and the rectangular structure can prevent the shaft body 31 from rotating relative to the clamping structure 40.

In another embodiment, the first clamping block 34 and the shaft body 31 are integrally formed, so that the shaft body 31 is stably fixed in the first mounting hole 12 and the second mounting hole 22.

Referring to fig. 1, 5 and 10 in combination, in one embodiment of the present application, the damper further includes an end cap 50, the first connector 11 and the second connector 21 are located between the clamping structure 40 and the end cap 50, one of the end cap 50 and the clamping structure 40 covers a side of the first mounting hole 12 facing away from the second mounting hole 22, and the other of the end cap 50 and the clamping structure 40 covers a side of the second mounting hole 22 facing away from the first mounting hole 12.

In the above-described embodiments, the clamping structure 40 and the end cap 50 are used to define the elastic member 32 in a closed space, and prevent the elastic member 32 from being deviated or separated from the receiving groove.

Specifically, the clamping structure 40 is configured to cooperate with the separation block 36 and an inner wall of the first mounting hole 12, and enclose a first accommodating space together, where the first buffer post 321 is located and deforms in the first accommodating space, so as to prevent the first buffer post 321 from being offset and losing function, and also prevent the first buffer post 321 from being separated from the first mounting hole 12. The end cap 50 is configured to cooperate with the separation block 36 and an inner wall of the second mounting hole 22, to define a second accommodating space, where the second buffer column 322 is located, and deform in the second accommodating space, so as to prevent the second buffer column 322 from being offset and losing function, and prevent the second buffer column 322 from being separated from the second mounting hole 22.

Referring to fig. 5, 6 and 10 in combination, in one embodiment of the present application, a second clamping groove 51 is formed on a side of the end cover 50 facing the shaft body 31, a second clamping block 35 is formed on a side of the shaft body 31 facing the end cover 50, and the second clamping block 35 is located in the second clamping groove 51.

In the above technical solution, on the one hand, the second clamping groove 51 is used for positioning the circumferential position of the shaft body 31, and is also used for positioning the radial position of the shaft body 31 in cooperation with the first clamping groove 48; on the other hand, since the shaft body 31 should be always in a stationary state with respect to the first ram 10 and the second ram 20, the engagement of the second locking groove 51 and the second locking block 35 is designed to prevent the shaft body 31 from being rotated by the influence of the first ram 10 and the second ram 20.

Specifically, the second clamping groove 51 is a rectangular groove, the second clamping block 35 is a rectangular block, and the rectangular structure can prevent the shaft body 31 from rotating relative to the end cover 50.

In another embodiment, the second fixture block 35 and the shaft body 31 are integrally formed, so that the shaft body 31 is stably fixed in the first mounting hole 12 and the second mounting hole 22.

Referring to fig. 1, 2, 7, 8 and 10 in combination, in one embodiment of the present application, the shaft structure 30 includes a connection shaft 33 connected to the shaft body 31, a first end of the connection shaft 33 is connected to the clamping structure 40, and a second end of the connection shaft 33 is connected to the end cap 50.

In the above technical solution, the connecting shaft 33 is used for fixing the clamping structure 40 and the end cover 50 at corresponding positions, so that the clamping structure 40 and the end cover 50 can prevent the elastic member 32 from separating from the first mounting hole 12 and the second mounting hole 22, and the connecting shaft 33 is also used for connecting three components of the clamping structure 40, the end cover 50 and the shaft body 31 together, so as to ensure that the components can be mutually matched.

Specifically, the groove bottom of the first clamping groove 48 is provided with a first threaded hole 49, the shaft body 31 is provided with a second threaded hole along the direction of the central axis, the groove bottom of the second clamping groove 51 is provided with a third threaded hole 52, the connecting shaft 33 is a threaded column, and the connecting shaft 33 sequentially passes through the first threaded hole 49, the second threaded hole and the third threaded hole 52 in a screwing mode to fixedly connect the clamping structure 40, the shaft body 31 and the end cover 50.

Referring to fig. 1, 2, 4, 11 and 12 in combination, in one embodiment of the present application, a limiting structure is disposed between the first connector 11 and the second connector 21, and the limiting structure is used to limit the rotational limit positions of the first hammer 10 and the second hammer 20.

In the above technical solution, the limiting structure is used for limiting the rotation ranges of the first hammer 10 and the second hammer 20 in a controllable range, when the wire is vibrated up and down under the action of wind, ice and other factors, the first hammer 10 and the second hammer 20 only rotate in the rotation range limited by the limiting structure, so as to prevent the first hammer 10 and the second hammer 20 from being impacted and damaged due to overlarge rotation range of the first hammer 10 and the second hammer 20, and also prevent the problem that the elastic member 32 loses elasticity due to overlarge extrusion force to the elastic member 32 due to overlarge rotation range of the first hammer 10 and the second hammer 20.

As shown in fig. 1, 2, 4, 11 and 12, in an embodiment of the present application, the limiting structure includes a first limiting rib 13 and a second limiting rib 23, the first limiting rib 13 is disposed on a side of the first connector 11 facing the second connector 21, the second limiting rib 23 is disposed on a side of the second connector 21 facing the first connector 11, a first rotational gap is maintained between a first end of the first limiting rib 13 and a first end of the second limiting rib 23, a second rotational gap is maintained between a second end of the first limiting rib 13 and a second end of the second limiting rib 23, and the first limiting rib 13 and the second limiting rib 23 are configured to limit a rotational limit position of the first connector 11 and the second connector 21 in a manner of being in contact with each other.

In the above technical solution, when the first hammer 10 and the second hammer 20 rotate relatively, the first rotation gap or the second rotation gap becomes smaller until the first end of the first limiting rib 13 contacts with the first end of the second limiting rib 23 or the second end of the first limiting rib 13 contacts with the second end of the second limiting rib 23, the first hammer 10 cannot rotate continuously in the original rotation direction, and the second hammer 20 cannot rotate continuously in the original rotation direction. The first limit rib 13 and the second limit rib 23 are matched with each other to form a limit structure, so that the principle is simple and the manufacturing is convenient.

Specifically, the first connector 11 and the second connector 21 are ring-shaped structures of the same size. In one embodiment, the first stop rib 13 extends along the arcuate edge of the first connector 11 to form a semi-circular structure, and the second stop rib 23 extends along the arcuate edge of the second connector 21 to also form a semi-circular structure. The width of the first spacing rib 13 is the same as the width of the second spacing rib 23, the first spacing rib 13 is in sliding fit with the second connector 21, the second spacing rib 23 is in sliding fit with the first connector 11, the first spacing rib 13 and the second spacing rib 23 are guaranteed to be in contact with each other, the contact surface of the first spacing rib 13 and the second spacing rib 23 is guaranteed to be the largest, and the optimal spacing effect is achieved.

In another embodiment, the first spacing rib 13 and the first connector 11 are in an integral structure, the second spacing rib 23 and the second connector 21 are also in an integral structure, so that when the first spacing rib 13 collides with the second spacing rib 23, the first spacing rib 13 cannot separate from the first connector 11, and the second spacing rib 23 cannot separate from the second connector 21, so that stability of a spacing process is ensured.

Referring to fig. 8 and 9 in combination, in one embodiment of the present application, the clamping structure 40 includes a third connector 41, a third extension 42, a clamp 43, a pressing block 44, and a locking member 45, the third connector 41, the third extension 42, and the clamp 43 are sequentially connected, a clamping channel capable of clamping a wire is formed between the clamp 43 and the pressing block 44, the pressing block 44 and the clamp 43 are in a split structure, or the pressing block 44 is rotatably disposed with respect to the clamp 43.

In the above technical solution, the third connector 41 is used for being connected with the connecting shaft 33, the third extension section 42 is used for separating the shaft structure 30 from the wire by a predetermined distance, ensuring that the first hammer 10 and the second hammer 20 can smoothly rotate, and ensuring the vibration-proof function, the third extension section 42 forms an included angle with the length extension direction of the clamping channel, the included angle is an acute angle or an obtuse angle, that is, the shaft structure 30 is not located at the vertical position of the clamping channel, the clamping head 43 and the pressing block 44 are used for clamping the wire, and the locking member 45 is used for fixing the wire in the clamping channel.

Through the arrangement of the pressing block 44, the clamping head 43 and the locking piece 45, on one hand, the damper can be detached from the lead at any time and installed at the position where the lead is required at any time, and the damper is convenient to disassemble and high in practicability; on the other hand, the clamping channel is flexible in size, wires with different diameters can be clamped, and even if the damper can be applied to different wires, the application range is wide.

Specifically, a fourth threaded hole is formed in the pressing block 44, the locking member 45 is a combination of a screw and a nut or a bolt, and after the locking member 45 is screwed through the fourth threaded hole, the end face of the locking member 45 abuts against the wire to fix the wire in the clamping channel. The threaded connection mode is more stable and the operation is more convenient.

Specifically, the shape of the third connector 41 is the same as the shape of the end cap 50, and the shape of both are the same as the shape of the first connector 11 side and the shape of the second connector 21 side, ensuring that the third connector 41 can cover the first mounting hole 12, and the end cap 50 can cover the second mounting hole 22. The first clamping groove 48 is formed on the third connector 41.

Specifically, the clamping head 43 is provided with a first wire groove 46, the pressing block 44 is provided with a second wire groove 47, and the first wire groove 46 and the second wire groove 47 enclose a clamping channel.

Referring to fig. 4, 11 and 12 in combination, in one embodiment of the present application, the first hammer 10 further includes a first extension 14 and a first hammer 15, the first connection head 11, the first extension 14 and the first hammer 15 are sequentially connected, and an arrangement direction of the three is perpendicular to a central axis of the shaft structure 30, the second hammer 20 further includes a second extension 24 and a second hammer 25, the second connection head 21, the second extension 24 and the second hammer 25 are sequentially connected, and an arrangement direction of the three is perpendicular to the central axis of the shaft structure 30, a mass of one of the first hammer 15 and the second hammer 25 is greater than a mass of the other of the two, a length of one of the first extension 14 and the second extension 24 is greater than a length of the other of the two, and the first hammer 10 and the second hammer 20 are located on a same side of the clamping structure 40.

In the above technical solution, the mass of the first hammer 15 is greater than that of the second hammer 25, the length of the first extension section 14 is less than that of the second extension section 24, and the clamping structure 40 is inclined to be close to the direction of the second hammer 20, so that the center of stress can be located at the center of the clamping structure 40, and therefore, when the first hammer 10 and the second hammer 20 are stationary, the first hammer 10 and the second hammer 20 can be kept on a straight line, and can be supported at a fixed position by the elastic member 32 without sinking due to gravity. The mass difference between the first 15 and second 25 hammers is designed according to the prior art principle of vibration prevention of the wire by the damper.

In another embodiment, the first connector 11, the first extension section 14 and the first hammer 15 form an integral structure through an integral molding process, the second connector 21, the second extension section 24 and the second hammer 25 also form an integral structure through an integral molding process, the structural strength is high, the impact resistance is strong, and when the wire is greatly vibrated under the action of wind, ice and other factors, the first hammer 10 and the second hammer 20 cannot be in bending strain failure.

The application also provides a power transmission overhead line, which comprises a wire and the damper, wherein the wire is positioned in a clamping channel of the clamping structure 40 and is clamped by the clamping structure 40.

The damper of the power transmission overhead line has the same technical scheme and technical effect as the damper, and the description thereof is omitted.

The vibration damper has the advantages of high strength of each part, strong fatigue resistance, long-term operation and ensured safety of a circuit where the lead is located.

From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects: when the wire is vibrated up and down under the action of wind, ice and other factors, the first hammer body and the second hammer body rotate relatively along with the vibration of the wire, so that the amplitude of the wire is reduced, the vibration of the wire is weakened or eliminated, and accidents such as strand breakage, hardware damage and line short circuit of the wire caused by the vibration are prevented. When the wire is erected in the heavy ice area, the situation of ice-removing jump can occur after the wire is covered with ice to cause great oscillation, because the shaft structure is connected between the first hammer body and the second hammer body, under the elastic action of the elastic piece, the larger impact force received by the first hammer body and the second hammer body can be absorbed by the elastic piece, after the impact force disappears, the elastic piece is restored to the original state through the self elastic deformation capability, compared with a steel strand, the situation that the elastic piece of the shaft structure is not deformed and fails due to the impact force is avoided, so that the damper always keeps enough vibration-proof function, the required vibration-proof effect is achieved, and the damper can continuously conduct vibration-proof on the wire, and the safety of a power transmission line is ensured.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (14)

1. A damper, characterized by comprising:

a first ram (10) comprising a first connector (11);

the second hammer body (20) comprises a second connector (21);

-a shaft structure (30), said first connection head (11) and said second connection head (21) being rotatably arranged around a central axis of said shaft structure (30), said shaft structure (30) comprising an elastic member (32) having a deformability, said first connection head (11) and said second connection head (21) being both mated with said elastic member (32); and

a clamping structure (40) connected to the shaft structure (30), the clamping structure (40) comprising a clamping channel, the length extension of the clamping channel forming an angle with the central axis of the shaft structure (30), the clamping structure (40) being configured to clamp a wire located within the clamping channel;

first mounting hole (12) have been seted up on first connector (11), second mounting hole (22) have been seted up on second connector (21), axle construction (30) still include axle body (31), the first end elastic support of elastic component (32) is in between the inner wall of first mounting hole (12) with the periphery of axle body (31), the second end elastic support of elastic component (32) is in between the inner wall of second mounting hole (22) with the periphery of axle body (31).

2. Damper according to claim 1, characterized in that the outer circumference of the shaft body (31) is provided with a receiving groove, in which the elastic member (32) is located.

3. The damper according to claim 1, wherein the elastic member (32) includes a first buffer post (321) and a second buffer post (322), the first buffer post (321) is elastically supported between an inner wall of the first mounting hole (12) and an outer periphery of the shaft body (31), when the first connection head (11) rotates relative to the shaft body (31), the inner wall of the first mounting hole (12) can press the first buffer post (321), the second buffer post (322) is supported between an inner wall of the second mounting hole (22) and the outer periphery of the shaft body (31), and when the second connection head (21) rotates relative to the shaft body (31), the inner wall of the second mounting hole (22) can press the second buffer post (322).

4. A damper according to claim 3, characterized in that the shaft body (31) is further provided with a separation block (36), the separation block (36) being connected to the shaft body (31) and forming a first groove and a second groove arranged along the central axis, the first buffer post (321) being located in the first groove, the second buffer post (322) being located in the second groove.

5. The damper according to claim 2, wherein the shaft body (31) is provided at an outer periphery thereof with a plurality of the receiving grooves, the elastic members (32) are also provided in plurality, and at least one of the elastic members (32) is received in one of the receiving grooves.

6. The damper according to any one of claims 1 to 5, wherein a first clamping groove (48) is provided on a side of the clamping structure facing the shaft body (31), a first clamping block (34) is provided on a side of the shaft body (31) facing the clamping structure, and the first clamping block (34) is located in the first clamping groove (48).

7. The damper according to claim 6, further comprising an end cap (50), wherein the first connector (11) and the second connector (21) are each located between the clamping structure (40) and the end cap (50), one of the end cap (50) and the clamping structure covering a side of the first mounting hole (12) facing away from the second mounting hole (22), and the other of the end cap (50) and the clamping structure covering a side of the second mounting hole (22) facing away from the first mounting hole (12).

8. The damper according to claim 7, wherein a second clamping groove (51) is formed in a side of the end cover (50) facing the shaft body (31), a second clamping block (35) is arranged in a side of the shaft body (31) facing the end cover (50), and the second clamping block (35) is located in the second clamping groove (51).

9. The damper according to claim 8, wherein the shaft structure (30) comprises a connecting shaft (33) connected to the shaft body (31), a first end of the connecting shaft (33) being connected to the clamping structure, and a second end of the connecting shaft (33) being connected to the end cap (50).

10. Damper according to any one of claims 1 to 5, characterized in that a limit structure is provided between the first connector (11) and the second connector (21), for limiting the limit position of rotation of the first ram (10) and the second ram (20).

11. The damper according to claim 10, wherein the limit structure includes a first limit rib (13) and a second limit rib (23), the first limit rib (13) is disposed on a side of the first connector (11) facing the second connector (21), the second limit rib (23) is disposed on a side of the second connector (21) facing the first connector (11), a first rotational gap is maintained between a first end of the first limit rib (13) and a first end of the second limit rib (23), a second rotational gap is maintained between a second end of the first limit rib (13) and a second end of the second limit rib (23), and the first limit rib (13) and the second limit rib (23) are configured to be capable of limiting rotational limits of the first connector (11) and the second connector (21) by being in contact with each other.

12. The damper according to any one of claims 1 to 5, wherein the clamping structure (40) includes a third connector (41), a third extension (42), a collet (43), a press block (44) and a locking member (45), the third connector (41), the third extension (42), and the collet (43) are sequentially connected, a clamping channel capable of clamping the wire is formed between the collet (43) and the press block (44), the press block (44) and the collet (43) are of a split structure, or the press block (44) is rotatably disposed with respect to the collet (43).

13. The damper according to any one of claims 1 to 5, wherein the first ram (10) further comprises a first extension (14) and a first hammer head (15), the first connection head (11), the first extension (14) and the first hammer head (15) are sequentially connected, and the arrangement direction of the three is perpendicular to the central axis of the shaft structure (30), the second ram (20) further comprises a second extension (24) and a second hammer head (25), the second connection head (21), the second extension (24) and the second hammer head (25) are sequentially connected, and the arrangement direction of the three is perpendicular to the central axis of the shaft structure (30), the mass of one of the first hammer head (15) and the second hammer head (25) is larger than the mass of the other of the two, the length of one of the first extension (14) and the second extension (24) is larger than the length of the other, and the first ram (10) and the second ram (20) are located on the same side of the holding structure.

14. An electric transmission overhead line, characterized by comprising a wire and a damper according to any one of claims 1 to 13, said wire being located in a clamping channel of the clamping structure (40) and being clamped by the clamping structure (40).