CN114142394A - Insulator bottle supporting bracket - Google Patents

Abstract

The invention discloses an insulator bottle supporting bracket, which comprises: the support body, the support body is equipped with a plurality ofly including preventing falling pole and flexonics spare, prevents falling the pole, and a plurality ofly prevents falling the pole and set up side by side, and flexonics spare connects gradually a plurality of and prevents falling the pole, and flexonics spare is equipped with a plurality ofly, just flexonics spare arranges along the axial direction who prevents falling the pole. So, when carrying or accomodating this insulator and holding in the palm bottle support, can gather together a plurality of anti-falling poles, make the volume of support body diminish, be favorable to accomodating or carrying. When the insulator bottle supporting bracket needs to be used, the bracket body can be unfolded, so that the bracket body can be hung below an insulator string. Under the effect of gravity, the support body that a plurality of anti falling poles enclose is the arc structure, and the radian of this arc structure is adjustable, so for this insulator holds in the palm bottle support and can be applicable to not unidimensional insulator.

Description

Insulator bottle supporting bracket

Technical Field

The invention relates to the technical field of power transmission line maintenance tools, in particular to an insulator supporting bottle bracket.

Background

The insulator support is a hard insulator used for replacing insulators in live working, and mainly plays a role in supporting an insulator string, so that the insulator string can be always kept in a linear state on the insulator support under the action of gravity.

Generally, the bottle supporting frame is formed by connecting a plurality of supporting rods in parallel, and the bottle supporting frame formed by the plurality of supporting rods in an enclosed mode is of an arc-shaped structure. When the insulator is maintained or replaced, the worker firstly clamps the three-hole yoke plates at the two ends of the insulator string respectively, then connects the connected screw rods and the connected steel wires between the two clamps, and then connects the bottle supporting frame on the screw rods by utilizing the connecting parts and below the insulator, so that the insulator string can be loosened by shaking the screw rods to the bottle supporting frame, and the replacement or the maintenance of the insulator can be completed. However, the sizes of the insulators are different due to different voltage grades of the transmission line and different sizes of the insulators. Because relatively fixed between the bracing piece in the conventional support bottle frame, the radian that a plurality of bracing pieces enclose is unchangeable, leads to its suitability relatively poor, can not be applied to the insulator of different models and change or in the maintenance operation, is not limited to simultaneously and accomodates and carry.

Disclosure of Invention

In view of the above, it is desirable to provide an insulator support stand which is portable, highly adaptable, and adaptable to insulator replacement work of different types, in order to solve the above-mentioned problems.

An insulator cradle comprising: the support body, the support body is including preventing falling pole and flexonics spare, it is equipped with a plurality ofly, and a plurality of to prevent falling the pole and setting up side by side, flexonics spare connects gradually a plurality of prevent falling the pole, flexonics spare is equipped with a plurality ofly, and a plurality of flexonics spare is followed the axial direction who prevents falling the pole arranges.

In foretell insulator holds in palm bottle support, because the support body is by a plurality of anti-falling poles side by side and connect gradually through flexible connectors and form, so, when carrying or accomodating this insulator holds in the palm bottle support, can gather together a plurality of anti-falling poles, make the volume of support body diminish, be favorable to accomodating or carrying. When the insulator bottle supporting bracket needs to be used, the bracket body can be unfolded, and the two sides of the bracket body are connected with the lead screw by utilizing the connecting component, so that the bracket body can be hung below the insulator. Because be flexible connection between the adjacent anti-falling pole, when the support body hangs in the insulator below, under the effect of gravity, the support body that a plurality of anti-falling poles enclose is the arc structure, and the radian of this arc structure is adjustable, so, this insulator holds in the palm the bottle support and can be applicable to not unidimensional insulator, and when using, still can make each anti-falling pole homoenergetic laminate with the insulator completely.

The technical solution is further explained below:

in one embodiment, the insulator supporting bottle bracket further comprises a connecting mechanism, and the connecting mechanism is used for connecting the bracket body and the screw rod.

In one embodiment, the connecting mechanism comprises a hook and a connecting part which are connected, the connecting part is connected with the anti-falling rod, and the hook is used for hooking the screw rod.

In one embodiment, the connecting portion includes a connecting rod and a connecting hook, the connecting hook is detachably connected with the anti-falling rod, and the hook is connected with the connecting rod.

In one of the embodiments, the connecting mechanism further comprises a sleeve sleeved outside the connecting rod, the side wall of the connecting rod is provided with an external thread, the inner wall of the sleeve is provided with an internal thread matched with the external thread, the hook sleeve is sleeved outside the sleeve, and the end part of the sleeve, which is close to the connecting hook, is provided with a limiting table to support the hook.

In one embodiment, the insulator support bottle bracket further comprises a crank, and the crank is sleeved outside the sleeve and used for rotating the sleeve.

In one embodiment, the crank comprises a handle and a rotating part which are connected, a plurality of bosses are arranged at intervals on the end part, away from the limiting table, of the sleeve along the circumferential direction of the sleeve, locking grooves are formed between every two adjacent bosses, the rotating part is sleeved outside the plurality of bosses, locking pins are arranged in the rotating part and can move along the direction relatively close to or far away from the locking grooves, when the locking pins are inserted into the locking grooves, the connecting part can drive the sleeve to rotate along the central shaft of the connecting rod, and when the locking pins are withdrawn from the locking grooves, the connecting part can idle.

In one embodiment, two sets of limiting parts are arranged on the anti-falling rod, each limiting part comprises two limiting protrusions, a limiting groove is formed between the two limiting protrusions, and the connecting hook is limited in the limiting groove; and/or a blocking piece for closing the opening is arranged at the opening of the hook and/or the opening of the connecting hook.

In one embodiment, four connecting mechanisms are provided, two connecting mechanisms form a group, and two groups of connecting mechanisms are respectively in one-to-one correspondence with and connected with the two anti-falling rods at the two ends of the flexible connecting piece.

In one embodiment, the first end portion and the second end portion of the anti-drop rod are provided with connecting rings, and the flexible connecting member is provided with two flexible connecting portions, wherein one flexible connecting portion sequentially passes through the connecting rings on the first end portions, and the other flexible connecting portion sequentially passes through the connecting rings on the second end portions; and/or the maximum distance between two adjacent anti-falling rods is smaller than the diameter of the insulator.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Furthermore, the drawings are not to scale of 1:1, and the relative dimensions of the various elements in the drawings are drawn only by way of example and not necessarily to true scale. In the drawings:

fig. 1 is a schematic structural view of an insulator cradle according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an insulator supporting frame at another viewing angle according to an embodiment of the present invention;

fig. 3 is a schematic view of a part of the structure of the connecting mechanism and the crank in an embodiment of the invention.

The elements in the figure are labeled as follows:

10. an insulator support bottle bracket; 110. a stent body; 111. the anti-dropping rod; 112. a flexible connector; 113. a connecting ring; 120. a connecting mechanism; 121. hooking; 122. a connecting portion; 1221. a connecting rod; 1222. a connecting hook; 123. a blocking member; 124. a sleeve; 125. a limit table; 126. a boss; 127. a locking groove; 130. a crank; 131. a handle; 132. a rotating part; 133. a lock pin; 20. an insulator string; 210. an insulator; 30. and a screw rod.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1 and 2, an embodiment of the present application provides an insulator cradle 10, including: a stent body 110. The holder body 110 includes a drop prevention bar 111 and a flexible connector 112. The anti-falling rod 111 is provided with a plurality of anti-falling rods 111 arranged side by side. The flexible connecting piece 112 is sequentially connected with the plurality of anti-falling rods 111, and the flexible connecting piece 112 is provided with a plurality of rods. And a plurality of the flexible connectors 112 are arranged in the axial direction of the drop prevention bar 111.

In the insulator bottle supporting bracket 10, the plurality of anti-falling rods 111 are arranged in parallel and sequentially connected through the flexible connecting piece 112 to form the bracket body 110, so that the plurality of anti-falling rods 111 can be gathered when the insulator bottle supporting bracket 10 is carried or stored, the size of the bracket body 110 is reduced, and the storage or the carrying is facilitated. When the insulator support 10 is used, the support body 110 can be unfolded, and the connecting part 122 connects both sides of the support body 110 with the lead screw 30, so that the support body 110 can be suspended below the insulator 210. Because adjacent anti-falling rods 111 are in flexible connection, when the support body 110 is hung below the insulator 210, under the action of gravity, the support body 110 surrounded by the anti-falling rods 111 is of an arc-shaped structure, and the radian of the arc-shaped structure is adjustable, so that the insulator bottle supporting support 10 is applicable to insulators 210 of different sizes, and when the insulator bottle supporting support is used, each anti-falling rod 111 can be completely attached to the insulator 210.

Specifically, when the diameter of the insulator 210 is large, the opening formed by the bracket body 110 is large. When the diameter of the insulator 210 is smaller, the opening formed by the bracket body 110 when the bracket body 110 is attached to the insulator 210 is smaller, and the area of the insulator 210 which is wrapped is larger.

Specifically, with continuing reference to fig. 1 and 2, in the present embodiment, the first end and the second end of the anti-drop rod 111 are provided with a connection ring 113. Two flexible connectors 112 are provided. One of the flexible connectors 112 sequentially passes through the connecting rings 113 on the first end portions, and the other flexible connector 112 sequentially passes through the connecting rings 113 on the second end portions. Thus, when the bracket body 110 is hung below the insulator 210 and the insulator string 20 is placed in the bracket body 110, the falling prevention rod 111 can be prevented from shaking, and the insulator string 20 can be stably supported.

In order to further improve the stability of the bracket body 110 when supporting the insulator string 20, optionally, in another embodiment, three or more flexible connecting members 112 are provided, so that the flexible connecting members 112 and the plurality of anti-falling rods 111 can form a bracket with a net structure, and the relative shaking between the adjacent anti-falling rods 111 when the insulator 210 is placed on the anti-falling rods 111 can be effectively avoided.

In order to prevent the insulator string 20 from falling off between two adjacent anti-falling rods 111 when the bracket body 110 cradles the insulator string 20, the maximum distance between two adjacent anti-falling rods 111 is smaller than the diameter of the insulator 210. Specifically, the position of the anti-drop rod 111 on the flexible connecting member 112 is adjustable, so that the distance between adjacent anti-drop rods 111 in the bracket body 110 can be adjusted according to the diameter of the insulator 210 before the insulator 210 is disassembled or repaired, so as to adapt to the replacement of different types of insulators 210.

Alternatively, in another embodiment, the number of the anti-falling rods 111 on the flexible connecting member 112 can be increased or decreased by the worker according to the actual requirement.

Specifically, in the present embodiment, the flexible connecting member 112 is a high-strength connecting string. The drop prevention bar 111 is made of an insulating material.

With continued reference to fig. 1 and 2, in addition to the above embodiments, in one embodiment, the insulator support 10 further includes a connecting mechanism 120. The connecting mechanism 120 is used for connecting the bracket body 110 and the screw rod 30. In this way, the connection of the holder body 110 can be achieved, so that the insulator string 20 can be supported by the holder body 110 in a relaxed state.

Specifically, when repairing or replacing the insulator 210, a worker firstly clamps the three-hole link plates at two ends of the insulator string 20, then connects the connecting lead screw 30 and the steel wire between the two clamps, and then places the bracket body 110 below the insulator string 20 and connects the bracket body 110 to the lead screw by using the connecting mechanism 120. As such, the bracket body 110 may be suspended below the insulator string 20. When the insulator string 210 or the insulator string 20 needs to be replaced, the screw rod is shaken to loosen the insulator string 20 onto the insulator holder 10.

It should be noted that the equipment such as the fixture, the lead screw, the steel wire, and the like used when replacing the insulator 210 or the insulator string 20 and the matching relationship among the equipment are the prior art, and the specific principle and process of the matching operation of each component are not described herein again.

Further, as shown in fig. 1 and 2, in an embodiment, the connection mechanism 120 includes a hook 121 and a connection portion 122 connected to each other. The connecting portion 122 is connected to the falling prevention rod 111, and the hook 121 is hooked on the screw rod 30. Therefore, the connection between the bracket body 110 and the lead screw 30 is simple and convenient.

Referring to fig. 1 and fig. 2, on the basis of the above embodiments, in an embodiment, the connecting portion 122 includes a connecting rod 1221 and a connecting hook 1222 connected to each other. The connection hook 1222 is detachably connected to the drop prevention bar 111, and the hook 121 is connected to the connection bar 1221. In this way, when the insulator support stand 10 is used, the hook 121 to which the connecting rod 1221 is connected is hooked on the screw rod 30, and the anti-drop rod 111 is hooked by the connecting hook 1222. Further alternatively, the connection hook 1222 is hooked on the falling prevention bar 111, and the hook 121 is hooked on the screw rod 30.

Since the connecting hooks 1222 are detachably connected to the falling prevention rods 111, when the bracket body 110 is hung below the insulator string 20, a worker can rotationally hook two falling prevention rods 111 according to actual conditions.

Optionally, in another embodiment, the connecting portion 122 includes a connecting rod 1221 and a connecting rope connected. When the anti-falling rod 111 is connected, the anti-falling rod 111 is bound by the connecting rope.

In order to improve the connection strength of the connection mechanism 120 and to improve the safety of the worker's work, the connection rod 1221, the connection hook 1222, and the hook 121 are made of an insulating metal material.

In order to avoid the hook 121 from falling off after being hooked on the screw rod 30, on the basis of the above embodiment, in an embodiment, a blocking member 123 for closing the opening is disposed at the opening of the hook 121.

Similarly, as shown in fig. 2, in order to prevent the falling-off preventive bar 111 from falling off from the opening of the connecting hook 1222 after the connecting hook 1222 is connected to the falling-off preventive bar 111, in an embodiment, a stopper 123 for closing the opening is disposed at the opening of the connecting hook 1222.

When the hook 121 is hooked on the lead screw 30, the holder body 110 is hung below the insulator string 20 in order to adjust a longitudinal distance between the holder body 110 and the insulator string 20. Referring to fig. 2 and fig. 3, on the basis of the above embodiments, in an embodiment, the connecting mechanism 120 further includes a sleeve 124 sleeved outside the connecting rod 1221. The lateral wall of connecting rod 1221 is equipped with the external screw thread, the inner wall of sleeve 124 be equipped with the internal thread of external screw thread looks adaptation. The hook 121 is sleeved outside the sleeve 124, and a limit table 125 is arranged at the end of the sleeve 124 close to the connecting hook 1222 to support the hook 121. Thus, when the sleeve 124 is rotated, the sleeve 124 may move on the connecting rod 1221 in the axial direction of the connecting rod 1221. Because the hook 121 is sleeved outside the sleeve 124 and the hook 121 and the sleeve 124 can rotate relatively, when the hook 121 is connected to the screw rod 30 and the sleeve 124 is rotated, the connecting rod 1221 can move along the axial direction thereof. At this time, since the connection hook 1222 at one end of the connection rod 1221 is connected to the drop preventing rod 111, the support body 110 may have a tendency to move toward or away from the insulator string 20, thereby adjusting the distance between the support body 110 and the insulator string 20.

Referring to fig. 2 and 3, in order to facilitate the worker to adjust the position of the sleeve 124 on the connecting rod 1221, on the basis of the above embodiments, in an embodiment, the insulator cradle 10 further includes a crank 130. The handle 130 fits over the sleeve 124 for rotating the sleeve 124. Thus, the crank 130 is rotated around the central axis of the connecting rod 1221 to drive the sleeve 124 to rotate on the connecting rod 1221, and the position of the sleeve 124 on the connecting rod 1221 is adjusted, so as to finally adjust the distance between the bracket body 110 and the insulator string 20.

Further, in the present embodiment, the crank 130 includes a handle 131 and a rotating part 132 connected to each other. The end of the sleeve 124 away from the limiting table 125 is provided with a plurality of bosses 126 at intervals along the circumferential direction, and a locking groove 127 is formed between two adjacent bosses 126. The rotating portion 132 is sleeved outside the plurality of bosses 126, a lock pin 133 is disposed in the rotating portion 132, and the lock pin 133 can move in a direction relatively approaching to or separating from the locking groove 127. When the locking pin 133 is inserted into the locking groove 127, the connecting portion 122 can rotate the sleeve 124 along the central axis of the connecting rod 1221. When the lock pin 133 is withdrawn from the lock groove 127, the connecting portion 122 can idle.

In order to improve the durability of the handle 131 and the rotating portion 132, the handle 131 and the rotating portion 132 are made of an insulating metal material.

Specifically, when the sleeve 124 needs to be rotated, the lock pin 133 is inserted into the lock slot 127, so that the rotating portion 132 is rotated by the handle 131 to rotate the sleeve 124 around the connecting rod 1221. In order to prevent the handle 131 from accidentally striking the insulator 210 during rotation, the lock pin 133 can be withdrawn from the lock groove 127 when the handle 131 approaches the insulator 210, so that the sleeve 124 cannot rotate along with the handle when the rotating part 132 is rotated in the reverse direction, and the lock pin 133 can be inserted into the lock groove 127 when the handle 131 is away from the insulator 210.

Alternatively, the locking pin 133 may be automatically inserted into or withdrawn from the locking slot 127 by an electronic control system.

Specifically, in the present embodiment, one end of the lock pin 133 is disposed in the rotating portion 132, and the other end extends out of the rotating portion 132 for manually pushing the lock pin 133 to insert into or withdraw from the locking groove 127

Optionally, in another embodiment, in order to increase the friction between the hand and the handle 131 and the lock pin 133, the handle 131 and the end of the lock pin for holding are provided with anti-slip threads.

In order to avoid the connecting hook 1222 sliding on the falling prevention rod 111 when hooked on the falling prevention rod 111 and affecting the stability of the support of the bracket body 110, on the basis of the above embodiments, in an embodiment, two sets of limiting portions (not shown in the drawings) are provided on the falling prevention rod 111.

In order to avoid collision between the limiting part and the insulator string, the limiting part is arranged at two ends of the anti-falling rod 111. Specifically, the limiting part comprises two limiting protrusions. A limiting groove is formed between the two limiting protrusions, and the connecting hook 1222 is limited in the limiting groove. Thus, the connecting hook 1222 is caught between the two stopper protrusions, preventing the connecting hook 1222 from sliding on the drop prevention bar 111, and at the same time, preventing the connecting hook 1222 from falling off the drop prevention bar 111.

In order to suspend the bracket body 110 under the insulator string 20 in a stable and balanced state, referring to fig. 1, on the basis of the above embodiment, in an embodiment, four connecting mechanisms 120 are provided. Two of the connecting mechanisms 120 are in one set. The two sets of connection mechanisms 120 are respectively in one-to-one correspondence with and connected to the two anti-falling rods 111 at the two ends of the flexible connection member 112.

Specifically, the two anti-drop bars 111 at both ends of the flexible connection member 112 may be referred to as a first connection anti-drop bar and a second connection anti-drop bar, respectively. The first connection anti-drop rod is provided with two connection mechanisms 120, and the two connection mechanisms are respectively positioned at two ends of the first connection anti-drop rod. The second connection anti-drop rod is also provided with two connection mechanisms 120, and the two connection mechanisms are respectively located at two ends of the second connection anti-drop rod.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The utility model provides an insulator holds in palm bottle support which characterized in that includes: the support body, the support body is including preventing falling pole and flexonics spare, it is equipped with a plurality ofly, and a plurality of to prevent falling the pole and setting up side by side, flexonics spare connects gradually a plurality of prevent falling the pole, flexonics spare is equipped with a plurality ofly, and a plurality of flexonics spare is followed the axial direction who prevents falling the pole arranges.

2. The insulator holder according to claim 1, further comprising a connecting mechanism for connecting the holder body to a lead screw.

3. The insulator support according to claim 2, wherein the connecting mechanism comprises a hook and a connecting portion connected with each other, the connecting portion is connected with the anti-falling rod, and the hook is used for hooking the screw rod.

4. The insulator cradle according to claim 3, wherein the connecting portion comprises a connecting rod and a connecting hook connected thereto, the connecting hook being detachably connected to the anti-drop rod, the hook being connected to the connecting rod.

5. The insulator support according to claim 4, wherein the connecting mechanism further comprises a sleeve sleeved outside the connecting rod, an external thread is arranged on a side wall of the connecting rod, an internal thread matched with the external thread is arranged on an inner wall of the sleeve, the hook is sleeved outside the sleeve, and a limit table is arranged at an end part of the sleeve, which is close to the connecting hook, to support the hook.

6. The insulator holder according to claim 5, further comprising a crank, wherein the crank is sleeved outside the sleeve for rotating the sleeve.

7. The insulator support according to claim 6, wherein the crank comprises a handle and a rotating portion connected with each other, a plurality of bosses are formed at intervals along a circumferential direction of an end portion of the sleeve away from the limiting table, a locking groove is formed between two adjacent bosses, the rotating portion is sleeved outside the plurality of bosses, a lock pin is arranged in the rotating portion and can move in a direction relatively close to or away from the locking groove, when the lock pin is inserted into the locking groove, the connecting portion can drive the sleeve to rotate along a central axis of the connecting rod, and when the lock pin is withdrawn from the locking groove, the connecting portion can idle.

8. The insulator support according to claim 4, wherein the anti-drop rod is provided with two sets of limiting parts, each limiting part comprises two limiting protrusions, a limiting groove is formed between the two limiting protrusions, and the connecting hook is limited in the limiting groove;

and/or a blocking piece for closing the opening is arranged at the opening of the hook and/or the opening of the connecting hook.

9. The insulator support according to claim 3, wherein the number of the connecting mechanisms is four, two connecting mechanisms are in one group, and two groups of the connecting mechanisms are respectively in one-to-one correspondence with and connected with the two anti-falling rods at the two ends of the flexible connecting piece.

10. An insulator holder according to any one of claims 1-9, wherein the first end portion and the second end portion of the anti-drop rod are each provided with a connecting ring, and the number of the flexible connectors is two, wherein one of the flexible connectors passes through the connecting rings on a plurality of the first end portions in sequence, and the other flexible connector passes through the connecting rings on a plurality of the second end portions in sequence;

and/or the maximum distance between two adjacent anti-falling rods is smaller than the diameter of the insulator.

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