CN211183304U

CN211183304U - Hardware fitting

Info

Publication number: CN211183304U
Application number: CN201922386101.8U
Authority: CN
Inventors: 杨伟坚; 曾东瑜
Original assignee: Guangdong Power Grid Materials Co ltd; Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Materials Co ltd; Guangdong Power Grid Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-08-04
Anticipated expiration: 2029-12-26

Abstract

The application relates to the technical field of electric power fittings, in particular to a fitting, which comprises a cylinder, a first spherical crown, a first connecting rod and an elastic rod; the first side wall of the cylinder body is connected with the insulator, and the second side wall of the cylinder body is provided with a movable hole; the first end of the first connecting rod is connected with the first spherical crown, and the second end of the first connecting rod penetrates through the movable hole to be connected with the outside, so that the first spherical crown is arranged inside the cylinder body; the elastic rod is fixed in the barrel body, the elastic rod can be elastically deformed along the direction close to the movable hole, the elastic rod is abutted against the first spherical crown, and then a buffer mechanism for limiting the first spherical crown to move along the direction close to the movable hole is formed. The buffering iron tower that the prestressing force through the gold utensil changes, drops etc. when this application suffered natural disasters tolerates instantaneous stress to avoid the emergence of iron tower falling accident, solved the technical problem that the tower falling accident appears easily after current transmission line suffered natural disasters effectively.

Description

Hardware fitting

Technical Field

The application relates to the technical field of electric power fittings, in particular to a fitting.

Background

The traditional overhead transmission line insulator is generally hard-connected by a military cap or a wedge-shaped hardware fitting at the top of the insulator without any buffer space. When the wire is subjected to natural disasters such as rainstorm, strong typhoon, rime, hail, ice and snow, the wire can be subjected to strong pulling force and shearing force, all stress is transmitted to the iron tower at the moment, so that the iron tower is subjected to excessive pressure transmitted by the wire, and when the prestress borne by the wire or the tension insulator exceeds the limit, the wire or the tension insulator is broken; at the moment, the tension balance of the iron tower on two sides of the breaking point is damaged instantly, and the iron tower is easy to deform, fall down and other accidents under the action of reverse tension.

Therefore, there is a need for a hardware capable of buffering stress from a wire, so as to reduce the influence of the wire stress on an iron tower, thereby reducing the occurrence of accidents.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present application is to provide a fitting, which effectively solves the technical problem that a tower collapse accident easily occurs after an existing power transmission line suffers from a natural disaster, and buffers the iron tower to endure transient stress through prestress change, falling off and the like of the fitting when the existing power transmission line suffers from the natural disaster, so as to avoid the occurrence of the tower collapse accident of the iron tower.

In order to achieve the purpose, the application provides the following technical scheme:

a hardware fitting comprises a cylinder, a first spherical crown, a first connecting rod and an elastic rod; the first side wall of the cylinder body is connected with the insulator, and the second side wall of the cylinder body is provided with a movable hole; the first end of the first connecting rod is connected with the first spherical cap, and the second end of the first connecting rod passes through the movable hole to be connected with the outside, so that the first spherical cap is arranged inside the cylinder body; the elastic rod is fixed in the barrel body, the elastic rod can be elastically deformed along the direction close to the movable hole, the elastic rod is abutted against the first spherical crown, and then a buffer mechanism for limiting the first spherical crown to move along the direction close to the movable hole is formed.

Preferably, in the hardware tool, two ends of the elastic rod penetrate through the third side wall and the fourth side wall of the cylinder body to be detachably connected with the cylinder body.

Preferably, in the hardware tool, both ends of the elastic rod are provided with limiting parts for limiting the movement of the elastic rod.

Preferably, in the hardware tool, two ends of the elastic rod are respectively and fixedly connected with the third side wall and the fourth side wall of the cylinder.

Preferably, in the hardware tool, the elastic rod is U-shaped, and two ends of the U-shaped elastic rod are connected to the first side wall or the second side wall of the cylinder.

Preferably, in the hardware tool, the elastic rod and the first side wall are arranged in parallel or at an included angle.

Preferably, in the hardware tool described above, the width of the first spherical cap is greater than the width of the movable hole.

Preferably, in the hardware tool, the number of the elastic rods is 1 to 2.

Preferably, in the hardware tool, a connecting piece is arranged at the first end of the cylinder, and the connecting piece includes a second connecting rod and a second spherical cap; the first end of the second connecting rod is connected with the first end of the cylinder, the second end of the second connecting rod is connected with the second spherical crown, and the second spherical crown is arranged inside the insulator.

Preferably, in the hardware tool, the elastic rod is a spring steel rod.

Compared with the prior art, the beneficial effects of this application are:

(1) according to the method, the prestress hardware fitting is additionally arranged at the connecting position of the insulator and the iron tower or the wire, when the wire or the iron tower bears stress, the elastic rod can generate elastic deformation along the direction close to the movable hole, and the first spherical crown in the prestress hardware fitting can be pulled to move along the direction close to the movable hole, so that the wire has a certain margin of movable space, slight sag of a line is allowed, the tension borne by the line wire and the iron tower is reduced, and accidents such as line breakage, iron tower toppling and the like are reduced;

(2) when the stress of the wire or the iron tower on the hardware fitting is within the elastic deformation allowable range of the elastic rod, the elastic rod can automatically recover to a normal state after the barrier on the wire is removed, so that the prestress hardware fitting can continuously operate;

(3) in addition, when the stress of wire or iron tower to the gold utensil surpassed the bearing capacity of gold utensil, the gold utensil can break off, thereby disconnection between iron tower and the wire, the part wire that loses the support of iron tower breaks off easily, make the iron tower can reduce the part stress that comes from the wire, therefore the emergence of the accident that the iron tower topples over has been avoided, compare in giving up a grade of wire, the loss of avoiding toppling over of iron tower and leading to is still less, and it is easier than the maintenance iron tower to maintain the wire when salvageing, thereby can promote the efficiency of salvageing the power.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a first hardware provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a second hardware provided in the embodiment of the present application;

fig. 3 is a schematic structural diagram of a third hardware provided in the embodiment of the present application;

fig. 4 is a schematic structural diagram of a fourth hardware provided in the embodiment of the present application;

FIG. 5 is a top view of a resilient lever according to an embodiment of the present disclosure;

fig. 6 is a connection relationship diagram of a hardware and an insulator according to an embodiment of the present application.

In the figure:

1 is a

cylinder body

1, 11 is a first side wall, 12 is a second side wall, 13 is a third side wall, 14 is a fourth side wall, 15 is a movable hole, 2 is a first spherical cap, 3 is a first connecting rod, 4 is an elastic rod, 41 is a first fixed rod, 42 is a second fixed rod, 43 is a limiting part, 5 is a connecting piece, 51 is a second connecting rod, 52 is a second spherical cap, and 6 is an insulator.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

The traditional overhead transmission line insulator is generally hard-connected by a military cap or a wedge-shaped hardware fitting at the top of the insulator without any buffer space. When the wire is subjected to natural disasters such as rainstorm, typhoon, rime, hail, ice and snow, the wire can be subjected to strong pulling force and shearing force, all stress is transmitted to the iron tower at the moment, so that the iron tower is subjected to excessive pressure transmitted by the wire, and when the prestress borne by the wire or the tension insulator exceeds the limit, the wire or the tension insulator is broken; at the moment, the tension balance of the iron tower on two sides of the breaking point is damaged instantly, and the iron tower is easy to deform, fall down and other accidents under the action of reverse tension. The application provides a gold utensil, the buffer iron tower that changes, drops etc. through the prestressing force of gold utensil when suffering natural disasters tolerates instantaneous stress to avoid the emergence of iron tower falling accident, solved the technical problem that the tower falling accident appears easily after current transmission line suffers natural disasters effectively.

Referring to fig. 1 to 6, the present application provides a hardware tool, including a barrel 1, a first spherical cap 2, a first connecting rod 3 and an elastic rod 4; the first side wall 11 of the cylinder body 1 is connected with the insulator 6, and the second side wall 12 of the cylinder body 1 is provided with a movable hole 15; a first end of the first connecting rod 3 is connected with the first spherical cap 2, and a second end of the first connecting rod 3 passes through the movable hole 15 to be connected with the outside, so that the first spherical cap 2 is arranged inside the cylinder body 1; elastic rod 4 is fixed in the inside of barrel 1, and elastic rod 4 can be followed the direction that is close to activity hole 15 and produced elastic deformation, and elastic rod 4 and first spherical cap 2 butt, and then form the buffer gear that the first spherical cap 2 of restriction removed along the direction that is close to activity hole 15.

More specifically, the external part refers to a wire or a tower pole of a tower, that is, the second end of the first connecting rod 3 may be connected to the wire through other components or may be connected to the tower pole of the tower through other components, and the specific connection of the first connecting rod 3 is designed according to actual needs. In addition, when the insulator 6 and the hardware are connected with the insulator 6 and a tower pole of an iron tower, the insulator 6, the lead and the first connecting rod 3 are all in a tight state, and at the moment, the elastic rod 4 is abutted against the first spherical crown 2; when the hardware fitting is not installed on the power transmission line, the elastic rod 4 can abut against the first spherical cap 2, and the elastic rod 4 can also be not in contact with the first spherical cap 2.

The prestressed hardware tool has the following four operation states during working:

(1) and (5) a normal operation state. The hardware is stressed normally, the elastic rod 4 is always abutted to the first spherical cap 2, and the elastic rod 4 is not deformed.

(2) And (4) an action state. When the gold utensil received from outside great stress, when the stress of external action gold utensil was less than the bearing stress of elastic rod 4, elastic rod 4 can produce elastic deformation, played the effect of buffering to first spherical crown 2 to absorb partial stress, simultaneously because the sag of wire changes, the stress is the reverse transmission to the wire, realizes the stress buffering, reaches the effect of not being destroyed by the stress in the twinkling of an eye of protection iron tower. And after the barrier on the wire or the tower pole of the iron tower is removed, the elastic rod 4 can be restored to the original state so as to ensure that the prestress hardware fitting can continue to operate.

(3) A limit state. When the hardware fitting is subjected to overlarge stress from the outside, the stress acted on the hardware fitting from the outside exceeds the elastic bearing range of the elastic rod 4, the elastic rod 4 can be bent and deformed, but the stress is reversely transferred to the lead due to the change of the sag of the lead, so that the stress buffering is realized, and the hardware fitting can also play a role in protecting the iron tower from being damaged by the instant stress; and the hardware can only be changed by arranging the staff afterwards.

(4) An open state. When the external stress exceeds the maximum stress borne by the prestress hardware fitting, the hardware fitting is used as a weak point of the power transmission line iron tower, the hardware fitting is firstly disconnected after relevant damage stress is absorbed, relevant leads can fall off, the influence on the iron tower is reduced, the fusing protection effect is achieved, and the effect of avoiding the iron tower from falling is achieved. The maintenance can be completed within 1-2 days by conducting wire short-line treatment, the tower inverting treatment of the iron tower takes at least 4-5 days, and if the tower inverting causes the tower inverting of an adjacent tangent tower and even a tension section iron tower, the emergency repair time can be further prolonged, so that the recovery and safe operation of a power grid are directly influenced; therefore, compared with the tower falling of the iron tower, the loss of the falling of the lead is less. In addition, when the hardware is broken, that is, at the weakest place inside the hardware, such as the elastic rod 4, the first connecting rod 3 or the second connecting rod 51, the breakage may occur.

Compared with the non-installed prestress hardware fitting, the prestress hardware fitting is additionally installed at the joint of the insulator 6 and the iron tower or the wire, when the wire or the iron tower bears stress to be increased, the elastic rod 4 can generate elastic deformation along the direction close to the movable hole 15, the first spherical crown 2 in the prestress hardware fitting can be pulled to move along the direction close to the movable hole 15, so that the wire has a certain margin of movable space, slight sag of a line is allowed, the tension borne by the line wire and the iron tower is further reduced, and accidents such as line breakage and iron tower toppling are reduced; meanwhile, when the stress of the wire or the iron tower on the hardware fitting is within the elastic deformation allowable range of the elastic rod 4, after the barrier on the wire is removed, the elastic rod 4 can automatically recover to a normal state, so that the prestress hardware fitting can continuously operate. In addition, when the stress of wire or iron tower to the gold utensil surpassed the bearing capacity of gold utensil, the gold utensil can break off, thereby disconnection between iron tower and the wire, the part wire that loses the support of iron tower breaks off easily, make the iron tower can reduce the part stress that comes from the wire, therefore the emergence of the accident that the iron tower topples over has been avoided, compare in addition through giving up a grade of wire, the loss of avoiding toppling over of iron tower and leading to is still less, it is easier than the maintenance iron tower to maintain the wire when salvageing, thereby can promote the efficiency of salvageing the repowering.

Further, in the present application, the elastic rod 4 is embodied as a spring steel rod. Spring steel refers to a special alloy steel for manufacturing various springs and other elastic elements, and has excellent comprehensive properties such as mechanical properties (especially, elastic limit, strength limit, yield ratio), anti-ballistic properties (i.e., anti-sag properties, also called anti-relaxation properties), fatigue properties, hardenability, and physicochemical properties. Elastic rod 4 that adopts the spring steel to make has good elastic property and deformation resilience ability, and when encountering with natural disasters, elastic rod 4 can play fine buffering effect to first spherical crown 2 through producing deformation to after clearing up the barrier on the wire, elastic rod 4 in the scope of bearing can the automatic recovery original state, can continuously function in order to guarantee the prestressing force gold utensil. Of course, it is the most preferable that the elastic rod 4 is made of spring steel, and the elastic rod 4 may also be made of other elastic materials, and also can play a role in buffering, and other elastic materials are not described in detail in this application.

Further, in the present application, referring to fig. 1, the elastic rod 4 may be disposed parallel to the first sidewall 11; referring to fig. 2, the flexible rod 4 may also be disposed at an angle to the first sidewall 12. Whether the elastic rod 4 is disposed parallel to the first sidewall 11 or not, as long as the elastic rod 4 plays a role of buffering to limit the movement of the first spherical cap 2 in the direction close to the movable hole 15, it is necessary to leave a movable space inside the cylinder 1 to allow the elastic rod 4 to be elastically deformed when mounting. Of course, it is better that the elastic rod 4 is arranged in parallel with the first side wall 11, so that the pressure of the first spherical cap 2 on the elastic rod 4 is more uniform, and when the elastic rod 4 is detachable, the elastic rod 4 parallel to the first side wall 11 is more convenient to mount.

Further, in the present application, the number of the elastic bars 4 is 1 to 2. The number of the elastic rods 4 can be 1, and 1 elastic rod 4 is preferably arranged close to the first connecting rod 3; the number of the elastic rods 4 may also be 2, please refer to fig. 5, 2 elastic rods 4 may be most preferably symmetrically disposed at two sides of the first connecting rod 3, so that the stress is most balanced, and of course, the 2 elastic rods 4 may also be disposed in other arrangement modes to abut against the first spherical cap 2, and also can play a role of limiting and buffering the first spherical cap 2. In addition, the number of the elastic rods 4 is 1 to 2, which is the most preferable case, and the number of the elastic rods 4 may be more than 3, but the number of the elastic rods 4 is continuously increased, and the first spherical cap 2 is more difficult to move, so that the buffering effect of the elastic rods 4 on the first spherical cap 2 is reduced, and even the possibility of allowing the first spherical cap 2 to move is lost, which is not favorable for the hardware to play a role in reducing the tension born by the line conductor and the iron tower.

Further, in the present application, the width of the first spherical cap 2 is larger than the width of the movable hole 15. Receive the pulling force that comes from iron tower or wire at head rod 3 and be greater than the scope of bearing of gold utensil, the fracture can appear in head rod 3, and insulator 6 can break off the tower pole with the iron tower during the fracture and be connected, under gravity, insulator 6 can overturn and come for activity hole 15 is down, and first spherical crown 2 directly drops and probably pounces pedestrian or the vehicle of passing by, causes the emergence of incident. The width of the first spherical cap 2 is set to be larger than that of the movable hole 15, so that the first spherical cap 2 can be prevented from falling off from the barrel body 1 when the movable hole 15 faces downwards, and the first spherical cap 2 can be prevented from directly falling off to hit passerby or vehicles. Of course, when the elastic rod 4 is more easily torn than the first connecting rod 3, the width of the first spherical cap 2 can also be smaller than the width of the movable hole 15, because the first spherical cap 2 will always be connected to the first connecting rod 3, and the first spherical cap 2 will not fall down even if the movable hole 15 faces downward.

Further, in the present application, please refer to fig. 6, a first end of the cylinder 1 is provided with a connecting member 5, and the connecting member 5 includes a second connecting rod 51 and a second spherical cap 52; the first end of the second connecting rod 51 is connected with the first end of the cylinder 1, the second end of the second connecting rod 51 is connected with the second spherical crown 52, and the second spherical crown 52 is arranged inside the insulator 6. The fixed connection of prestressing force gold utensil and insulator 6 can be realized through the setting of connecting piece 5, sets up the inside at insulator 6 through second spherical crown 52 moreover, can further strengthen the joint strength between gold utensil and the insulator 6.

The present application provides a first embodiment, please refer to fig. 1, which provides a hardware tool, including a barrel 1, a first spherical cap 2, a first connecting rod 3 and an elastic rod 4; the first side wall 11 of the cylinder body 1 is connected with the insulator 6, and the second side wall 12 of the cylinder body 1 is provided with a movable hole 15; the first spherical cap 2 is arranged inside the barrel 1; the first end of the first connecting rod 3 is connected with the first spherical crown 2, and the second end of the first connecting rod 3 passes through the movable hole 15 and is connected with the outside; the third lateral wall 13 and the fourth lateral wall 14 that the both ends of elastic rod 4 run through barrel 1 can be dismantled with barrel 1 and be connected, and elastic rod 4 can produce elastic deformation along the direction that is close to activity hole 15, and elastic rod 4 and first spherical crown 2 butt, and then form the buffer gear that first spherical crown 2 of restriction removed along the direction that is close to activity hole 15.

Further, in the present embodiment, referring to fig. 1, both ends of the elastic rod 4 are provided with a limiting member 43 for limiting the movement of the elastic rod 4. The limiting member 43 is disposed outside the barrel 1, and the limiting member 43 is detachably connected to the elastic rod 4, so that the elastic rod 4 can be limited to move along the direction from the third sidewall 13 to the fourth sidewall 14, and it is ensured that the middle portion of the elastic rod 4 can be fixedly disposed inside the barrel 1, thereby achieving the effect of limiting the first spherical cap 2 to move along the direction close to the movable hole 15. The stopper 43 may be a nut or other component that can restrict the elastic rod 4.

When the elastic rod 4 is installed, the elastic rod 4 can be directly inserted into the corresponding through holes on the third side wall 13 and the fourth side wall 14, and then the limiting piece 43 is installed, so that the installation of the elastic rod 4 can be completed.

The present application provides a second embodiment, please refer to fig. 2-4, which provides a hardware tool, including a barrel 1, a first spherical cap 2, a first connecting rod 3 and an elastic rod 4; the first side wall 11 of the cylinder body 1 is connected with the insulator 6, and the second side wall 12 of the cylinder body 1 is provided with a movable hole 15; the first spherical cap 2 is arranged inside the barrel 1; the first end of the first connecting rod 3 is connected with the first spherical crown 2, and the second end of the first connecting rod 3 passes through the movable hole 15 and is connected with the outside; the both ends of elastic rod 4 and the inner wall fixed connection of barrel 1, elastic rod 4 can be followed the direction that is close to activity hole 15 and produced elastic deformation, and

elastic rod

4 and 2 butts of first spherical crown, and then form the buffer gear that first spherical crown 2 of restriction removed along the direction that is close to activity hole 15.

The both ends of elastic rod 4 and the inner wall fixed connection of barrel 1 have a large number of fixed modes, and this application is no longer repeated. Three common securing means are as follows:

(1) referring to fig. 2, two ends of the elastic rod 4 are respectively fixedly connected with the third side wall 13 and the fourth side wall 14 of the cylinder 1;

(2) referring to fig. 3, two ends of the elastic rod 4 are respectively provided with a first fixing rod 41, and two ends of the first fixing rod 41 are respectively fixedly connected with the elastic rod 4 and the first side wall 11 of the cylinder 1;

(3) referring to fig. 4, the two ends of the elastic rod 4 are both provided with a second fixing rod 42, and the two ends of the second fixing rod 42 are respectively fixedly connected with the elastic rod 4 and the second side wall 12 of the cylinder 1.

Wherein, (2) and (3) are two cases that the elastic rod 4 is U-shaped, and two ends of the U-shaped elastic rod 4 are connected with the first side wall 11 or the second side wall 12 of the cylinder body 1.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hardware fitting is characterized by comprising a cylinder, a first spherical crown, a first connecting rod and an elastic rod;

the first side wall of the cylinder body is connected with the insulator, and the second side wall of the cylinder body is provided with a movable hole;

the first end of the first connecting rod is connected with the first spherical cap, and the second end of the first connecting rod passes through the movable hole to be connected with the outside, so that the first spherical cap is arranged inside the cylinder body;

the elastic rod is fixed in the barrel body, the elastic rod can be elastically deformed along the direction close to the movable hole, the elastic rod is abutted against the first spherical crown, and then a buffer mechanism for limiting the first spherical crown to move along the direction close to the movable hole is formed.

2. The fitting according to claim 1, wherein two ends of the elastic rod penetrate through the third side wall and the fourth side wall of the cylinder and are detachably connected with the cylinder.

3. The fitting according to claim 2, wherein both ends of the elastic rod are provided with a limiting member for limiting the movement of the elastic rod.

4. The fitting according to claim 1, wherein two ends of the elastic rod are fixedly connected with the inner wall of the cylinder.

5. The fitting according to claim 4, wherein the elastic rod is U-shaped, and two ends of the U-shaped elastic rod are connected with the first side wall or the second side wall of the cylinder.

6. The fitting according to claim 1, wherein the elastic rod is disposed parallel to or at an angle with respect to the first sidewall.

7. The fitting according to claim 1, wherein the width of the first spherical cap is greater than the width of the movable hole.

8. The fitting according to claim 1, wherein the number of the elastic rods is 1 to 2.

9. The fitting according to claim 1, wherein a connecting member is provided at the first end of the cylinder, and the connecting member comprises a second connecting rod and a second spherical cap;

the first end of the second connecting rod is connected with the first end of the cylinder, the second end of the second connecting rod is connected with the second spherical crown, and the second spherical crown is arranged inside the insulator.

10. The fitting according to any of claims 1 to 9, wherein the resilient rod is in particular a spring steel rod.