CN220065310U - Resistor piece of switching-on resistor, switching-on resistor and circuit breaker - Google Patents

Abstract

The utility model provides a resistor piece of a closing resistor, the closing resistor and a circuit breaker, wherein the resistor piece of the closing resistor comprises: a plurality of resistor sheets; the adjusting component comprises a first conductor, a second conductor and an elastic piece, wherein the first end of the first conductor is electrically connected with the plurality of resistor pieces, the second conductor is provided with a mounting hole extending along the axis of the second conductor, the second end of the first conductor movably penetrates through the mounting hole and is electrically connected with the second conductor, one end of the elastic piece is abutted with the second end of the first conductor, and the other end of the elastic piece is abutted with the second conductor. By the technical scheme provided by the utility model, the problem that the number of the conductive backing plates is required to be adjusted when the number of the resistor sheets is adjusted in the switching-on resistor in the related art, so that the replacement process is complicated, and the mounting of the switching-on resistor is inconvenient can be solved.

Description

Resistor piece of switching-on resistor, switching-on resistor and circuit breaker

Technical Field

The utility model relates to the technical field of switching equipment, in particular to a resistor piece of a closing resistor, the closing resistor and a circuit breaker.

Background

The circuit breaker is a switching device capable of carrying, closing and breaking a current under normal loop conditions and carrying, closing and breaking a current under abnormal loop conditions for a prescribed time, and can protect an electric power system. Overvoltage is generated when the switching-on operation of the circuit breaker is required in a high-voltage power grid system, and in order to restrain the influence of the overvoltage of the switching-on operation, the circuit breaker is connected with a switching-on resistor in parallel, so that the effect of reducing the overvoltage is achieved.

In the related art, the closing resistor comprises a resistor disc, an insulating rod and a conductive backing plate, wherein a plurality of resistor discs and a plurality of conductive backing plates in the closing resistor are all formed by connecting the insulating rod in series, and when the resistance value in the closing resistor is required to be adjusted, the number of the resistor discs is required to be increased or reduced, so that the adjustment of the resistance value in the closing resistor is completed.

However, when the number of the resistor pieces is adjusted, the number of the conductive pads is also required to be adjusted, so that the replacement process is complicated, and the installation of the resistor is inconvenient.

Disclosure of Invention

The utility model provides a resistor piece of a closing resistor, the closing resistor and a circuit breaker, and aims to solve the problems that the number of conductive backing plates is required to be adjusted when the number of resistor pieces is adjusted, the replacement process is complicated, and the closing resistor is inconvenient to install in the related art.

According to an aspect of the present utility model, there is provided a resistance member of a closing resistance, the resistance member of the closing resistance including: a plurality of resistor sheets; the adjusting component comprises a first conductor, a second conductor and an elastic piece, wherein the first end of the first conductor is electrically connected with the plurality of resistor pieces, the second conductor is provided with a mounting hole extending along the axis of the second conductor, the second end of the first conductor movably penetrates through the mounting hole and is electrically connected with the second conductor, one end of the elastic piece is abutted with the second end of the first conductor, and the other end of the elastic piece is abutted with the second conductor.

Further, a conductive structure is disposed between the outer sidewall of the second end of the first conductor and the wall of the mounting hole.

Further, the conductive structure comprises a conductive piece, an annular mounting groove is formed in the outer side wall of the second end of the first conductor, the conductive piece is arranged in the annular mounting groove, and the conductive piece is electrically connected with the outer side wall of the second end of the first conductor and the hole wall of the mounting hole respectively.

Further, the conductive piece comprises a spring contact finger, the spring contact finger is sleeved in the annular mounting groove, and the outer side wall of the spring contact finger is attached to the wall of the mounting hole; and/or the conductive piece is made of copper, and a silver-coated coating is arranged on the outer surface of the conductive piece.

Further, the second conductor includes barrel and end plate, and the end plate setting is kept away from the one end of first conductor at the barrel, and the elastic component includes the spring, and the spring setting is in the barrel, and the one end of spring and the second end butt of first conductor, the other end and the end plate butt of spring.

According to another aspect of the present utility model, there is provided a closing resistor including: a brake closing frame; the resistance piece of the switching-on resistor is arranged on the switching-on frame, and the resistance piece of the switching-on resistor is the resistance piece of the switching-on resistor.

Further, the switching-on resistor further comprises an insulating rod, two ends of the insulating rod are connected with two ends of the switching-on frame respectively, a plurality of resistor pieces of a resistor piece of the switching-on resistor are detachably sleeved on the insulating rod, a first conductor and a second conductor of the resistor piece of the switching-on resistor are sleeved on the insulating rod, and one end, far away from the first conductor, of the second conductor is connected with the insulating rod.

Further, a first supporting plate is arranged at the first end of the closing frame, a second supporting plate is arranged at the second end of the closing frame, the first end of the insulating rod is connected with the first supporting plate, and the second end of the insulating rod is connected with the second supporting plate; the closing resistor further comprises a baffle and a first clamping ring, the baffle is sleeved on the insulating rod and is abutted against one end, far away from the first conductor, of the second conductor, and the first clamping ring is sleeved on the insulating rod and is in limiting fit with the baffle.

Further, the closing resistor further comprises a guide sleeve, the guide sleeve is provided with external threads, a threaded hole is formed in the second supporting plate, the guide sleeve is in threaded connection with the second supporting plate through the threaded hole, the insulating rod is arranged in the guide sleeve in a penetrating mode, and a connecting wire used for electric connection is arranged between the baffle and the guide sleeve; the closing resistor further comprises a second clamping ring which is sleeved on the insulating rod and is in limit fit with the first supporting plate; the switch-on frame includes drive storehouse and insulating tube, and first backup pad sets up the first end in drive storehouse, and the second end in drive storehouse is connected with the first end of insulating tube, and the second backup pad sets up the second end at the insulating tube.

According to still another aspect of the present utility model, there is provided a circuit breaker including the above-provided closing resistor.

By applying the technical scheme of the utility model, the resistor piece of the closing resistor comprises a plurality of resistor pieces and an adjusting component, the first end of a first conductor in the adjusting component is electrically connected with the resistor pieces, the second conductor is provided with a mounting hole, so that the second end of the first conductor can be movably penetrated into the mounting hole of the second conductor, the first conductor and the second conductor are electrically connected, the elastic piece is arranged, one end of the elastic piece is abutted against the second end of the first conductor, the other end of the elastic piece is abutted against the second conductor, the elastic piece always has elastic force, the elastic piece can extend or shrink when the resistor pieces are increased or reduced so as to drive the first conductor to move, and then when the resistor pieces are increased, the resistance values of the resistor pieces are increased, the first conductor can be pushed to extend into the second conductor and continuously compress the elastic piece, or when the resistor pieces are reduced, the resistance values of the resistor pieces are reduced, the elastic piece can drive the first conductor to move in the mounting hole relative to the second conductor, the structure of the resistor piece is ensured to be always clamped under the action of the elastic piece, the structure is ensured, and the closing resistor piece is always clamped stably, and the structure is ensured, and the closing resistor piece is always stable, and the structure is ensured. By adopting the structure, through setting up a plurality of resistance cards and adjusting part, increase or reduce the resistance value that the resistance card quantity can adjust the resistance of the resistance card of closing a floodgate resistance, guarantee through the effect of elastic component that first conductor moves relative second conductor, both be convenient for can adjust the resistance value of the resistance card of closing a floodgate resistance when changing the resistance card quantity for change mode is simple to be convenient for install, can guarantee again to switch on between first conductor and the second conductor, avoid producing operation overvoltage, promote the practicality and the reliability of the resistance card of closing a floodgate resistance.

Drawings

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

fig. 1 is a schematic diagram showing an operating state when a resistance value in a resistor element of a closing resistor provided by an embodiment of the present utility model is reduced;

FIG. 2 shows a partial enlarged view at A in FIG. 1;

FIG. 3 is a schematic diagram of an adjusting assembly of a closing resistor according to an embodiment of the present utility model when a resistance value of a resistor element of the closing resistor is reduced;

fig. 4 is a schematic diagram showing an operating state when a resistance value in a resistor element of a closing resistor provided by an embodiment of the present utility model increases;

FIG. 5 shows a partial enlarged view at B in FIG. 4;

fig. 6 is a schematic diagram of an adjusting assembly when a resistance value of a resistor element of a closing resistor is increased according to an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. a resistor sheet;

20. an adjustment assembly; 21. a first conductor; 211. an annular mounting groove; 22. a second conductor; 221. a cylinder; 222. an end plate; 223. a mounting hole; 23. an elastic member; 231. a spring;

30. a conductive structure; 31. a conductive member; 311. spring contact fingers;

40. a brake closing frame; 41. a first support plate; 42. a second support plate; 43. a transmission bin; 44. an insulating cylinder;

50. a resistor piece of the closing resistor;

61. an insulating rod; 62. a baffle; 63. a first snap ring; 64. a guide sleeve; 65. connecting wires; 66. and a second snap ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 6, an embodiment of the present utility model provides a resistor of a closing resistor, which includes a plurality of resistor pieces 10 and an adjusting assembly 20, the adjusting assembly 20 includes a first conductor 21, a second conductor 22, and an elastic member 23, a first end of the first conductor 21 is electrically connected to the plurality of resistor pieces 10, the second conductor 22 has a mounting hole 223 extending along an axis thereof, a second end of the first conductor 21 is movably inserted through the mounting hole 223 and electrically connected to the second conductor 22, one end of the elastic member 23 is abutted to the second end of the first conductor 21, and the other end of the elastic member 23 is abutted to the second conductor 22.

By applying the resistor piece of the closing resistor provided by the embodiment, the resistor piece of the closing resistor comprises a plurality of resistor pieces 10 and an adjusting component 20, the first end of a first conductor 21 in the adjusting component 20 is electrically connected with the resistor pieces 10, a second conductor 22 is provided with a mounting hole 223, the second end of the first conductor 21 movably penetrates through the mounting hole 223 of the second conductor 22, the first conductor 21 and the second conductor 22 are electrically connected, an elastic piece 23 is arranged, one end of the elastic piece 23 is abutted against the second end of the first conductor 21, the other end of the elastic piece 23 is abutted against the second conductor 22, the elastic piece 23 always has an elastic force, so that under the action of the elastic piece 23, when the resistor pieces 10 are increased or reduced, the elastic piece 23 can be stretched or contracted to drive the first conductor 21 to move, and then when the resistor pieces 10 are increased, the resistance values of the resistor pieces 10 are increased, and then the first conductor 21 can be pushed into the second conductor 22 to continue to compress the elastic piece 23, or when the resistor pieces 10 are reduced, the resistance values of the resistor pieces 10 can be reduced, the elastic piece 23 can be driven by the elastic piece 23 to move under the condition that the first conductor 22 is stably and the structure is clamped, and the structure of the resistor pieces can be stably moved under the condition that the resistor pieces are guaranteed. By adopting the structure, through setting up a plurality of resistance cards 10 and adjusting part 20, increase or reduce the resistance value that the resistance card 10 quantity can adjust the resistance of combined floodgate resistance, guarantee through the effect of elastic component 23 that first conductor 21 moves relative second conductor 22, both be convenient for can adjust the resistance value of the resistance card of combined floodgate resistance when changing resistance card 10 quantity for the change mode is simple and convenient for install, can guarantee again to switch on between first conductor 21 and the second conductor 22, avoid producing operation overvoltage, promote the practicality and the reliability of the resistance card of combined floodgate resistance.

As shown in fig. 2, a conductive structure 30 is disposed between the outer sidewall of the second end of the first conductor 21 and the wall of the mounting hole 223. With the above structure, the conductive structure 30 is disposed between the second end of the first conductor 21 and the wall of the mounting hole 223, so that the first conductor 21 and the second conductor 22 are conveniently conducted under the action of the conductive structure 30.

As shown in fig. 2, 3, 5 and 6, the conductive structure 30 includes a conductive member 31, an annular mounting groove 211 is disposed on an outer sidewall of the second end of the first conductor 21, the conductive member 31 is disposed in the annular mounting groove 211, and the conductive member 31 is electrically connected to the outer sidewall of the second end of the first conductor 21 and a hole wall of the mounting hole 223, respectively. By adopting the structure, the annular mounting groove 211 is formed in the outer side wall of the first conductor 21 by arranging the conductive piece 31, so that the conductive piece 31 is conveniently mounted in the annular mounting groove 211, and the first conductor 21 and the second conductor 22 can be electrically connected under the action of the conductive piece 31.

As shown in fig. 2, 3, 5 and 6, the conductive member 31 includes a spring contact finger 311, the spring contact finger 311 is sleeved in the annular mounting groove 211, and an outer sidewall of the spring contact finger 311 is attached to a wall of the mounting hole 223. By adopting the structure, when the first conductor 21 is installed in the installation hole 223 of the second conductor 22 by arranging the spring contact finger 311 in the annular installation groove 211, the first conductor 21 can be prevented from shaking in the installation hole 223 under the action of the spring contact finger 311, and the spring contact finger 311 has elasticity, so that the installation is convenient, the elastic fit between the first conductor 21 and the second conductor 22 under the action of the spring contact finger 311 can be ensured, and the first conductor 21 and the second conductor 22 are ensured to be electrically connected.

In this embodiment, the conductive member 31 is made of copper, and the outer surface of the conductive member 31 is provided with a silver-coated layer. With the above structure, the conductive member 31 is made of copper material, so that the conductive member 31 has good conductivity, and the silver coating layer is provided on the outer surface of the conductive member 31, so that the conductivity of the conductive member 31 can be improved.

As shown in fig. 3 and 6, the second conductor 22 includes a cylinder 221 and an end plate 222, the end plate 222 is disposed at one end of the cylinder 221 away from the first conductor 21, the elastic member 23 includes a spring 231, the spring 231 is disposed in the cylinder 221, one end of the spring 231 abuts against the second end of the first conductor 21, and the other end of the spring 231 abuts against the end plate 222. With the above structure, by arranging the cylinder 221 and the end plate 222, the end plate 222 is connected with the cylinder 221, the spring 231 is arranged in the cylinder 221, one end of the spring 231 is abutted against the second end of the first conductor 21, and the other end of the spring 231 is abutted against the end plate 222, so that when the spring 231 is arranged in the cylinder 221, the spring 231 is always in a compressed state, one end of the spring 231 has acting force with the first conductor 21, and the other end of the spring 231 has acting force with the end plate 222, so that when the number of the resistor pieces 10 is regulated, the plurality of resistor pieces 10 can be clamped and fixed under the action of the spring 231, thereby being convenient for regulation and ensuring the structural stability of the resistor piece of the closing resistor.

As shown in fig. 2, 3, 5 and 6, the cylinder 221 is provided with a narrowing structure at a side close to the end plate 222, and further limits the spring 231. Specifically, the cylinder 221 includes a first cylinder section and a second cylinder section, the first cylinder section is disposed near one side of the end plate 222, the second cylinder section is disposed near one side of the first conductor 21, the spring 231 is disposed through the first cylinder section and the second cylinder section, and the cross-sectional dimension of the first cylinder section is smaller than that of the second cylinder section, so that the spring 231 can be limited by the first cylinder section.

As shown in fig. 1 and 4, another embodiment of the present utility model provides a closing resistor, which includes a closing frame 40 and a closing resistor resistive element 50, where the closing resistor resistive element 50 is disposed on the closing frame 40, and the closing resistor resistive element 50 is a closing resistor resistive element provided as described above. By adopting the structure, the switch-on frame 40 and the resistor piece 50 of the switch-on resistor are arranged, so that the resistor piece 50 of the switch-on resistor can be installed, the structural stability of the switch-on resistor is ensured, and the occurrence of operation overvoltage can be avoided.

As shown in fig. 1 and 4, the closing resistor further includes an insulating rod 61, two ends of the insulating rod 61 are respectively connected with two ends of the closing frame 40, the plurality of resistor pieces 10 of the resistor piece 50 of the closing resistor are detachably sleeved on the insulating rod 61, the first conductor 21 and the second conductor 22 of the resistor piece 50 of the closing resistor are both sleeved on the insulating rod 61, and one end, far away from the first conductor 21, of the second conductor 22 is connected with the insulating rod 61. By adopting the above structure, through setting up the insulator spindle 61, be convenient for install a plurality of resistance cards 10 on insulator spindle 61, be convenient for adjust the quantity of resistance card 10 like this, be convenient for dismantle the adjustment, and be convenient for all install first conductor 21 and second conductor 22 on insulator spindle 61, the one end of keeping away from first conductor 21 with second conductor 22 is connected with insulator spindle 61, spring 231 sets up in second conductor 22, be convenient for adjust the position of first conductor 21 under the effect of spring 231, and then can match the quantity of corresponding resistance card 10, need not to set up conductive pad like this, guarantee to install simple structure to resistance card 10, be convenient for operate.

As shown in fig. 1 and 4, a first end of the switching frame 40 is provided with a first support plate 41, a second end of the switching frame 40 is provided with a second support plate 42, a first end of the insulation rod 61 is connected with the first support plate 41, and a second end of the insulation rod 61 is connected with the second support plate 42. With the above structure, by providing the first support plate 41 and the second support plate 42, the first end of the insulating rod 61 is connected with the first support plate 41, and the second end of the insulating rod 61 is connected with the second support plate 42, so that the resistor member of the switching resistor can be easily manufactured by using the first support plate 41 and the second support plate 42, and the assembly can be easily performed.

As shown in fig. 1 and 4, the closing resistor further includes a baffle plate 62 and a first snap ring 63, the baffle plate 62 is sleeved on the insulating rod 61 and is abutted against one end, far away from the first conductor 21, of the second conductor 22, and the first snap ring 63 is sleeved on the insulating rod 61 and is in limit fit with the baffle plate 62. By adopting the above structure, by arranging the baffle plate 62 and the first clamping ring 63, the baffle plate 62 is abutted against one end, far away from the first conductor 21, of the second conductor 22, the first clamping ring 63 is sleeved on the insulating rod 61, and the first clamping ring 63 can be in limit fit with the baffle plate 62, so that the insulating rod 61 can be prevented from sliding relatively, and the insulating rod 61 can be limited.

As shown in fig. 1 and 4, the closing resistor further includes a guide sleeve 64, the guide sleeve 64 has an external thread, a threaded hole is provided on the second support plate 42, the guide sleeve 64 is in threaded connection with the second support plate 42 through the threaded hole, the insulating rod 61 is inserted into the guide sleeve 64, and a connection wire 65 for electrical connection is provided between the baffle plate 62 and the guide sleeve 64. With the above structure, the external thread is provided on the outer side wall of the guide sleeve 64 by providing the guide sleeve 64, the threaded hole is provided on the second support plate 42, the guide sleeve 64 is conveniently fixed on the second support plate 42, the guide sleeve 64 plays a role in guiding the insulating rod 61, and in order to ensure a conductive effect, the connecting wire 65 is provided between the baffle 62 and the guide sleeve 64, so that electric connection is facilitated.

As shown in fig. 1 and 4, the closing resistor further includes a second snap ring 66, and the second snap ring 66 is sleeved on the insulating rod 61 and is in limit fit with the first support plate 41. By adopting the structure, through setting up the second snap ring 66, the second snap ring 66 cover is established on the insulator spindle 61 and can carry out spacing cooperation with first backup pad 41 for under the effect of first snap ring 63 and second snap ring 66, can play spacing effect to insulator spindle 61 simultaneously, avoid insulator spindle 61 to take place to rock.

As shown in fig. 1 and 4, the brake closing frame 40 includes a driving bin 43 and an insulating cylinder 44, the first support plate 41 is disposed at a first end of the driving bin 43, a second end of the driving bin 43 is connected to a first end of the insulating cylinder 44, and the second support plate 42 is disposed at a second end of the insulating cylinder 44. By adopting the structure, the transmission bin 43 and the insulating cylinder 44 are arranged, so that the resistor piece of the closing resistor can be conveniently manufactured, and the closing work process of the closing frame 40 can be ensured.

It should be noted that, the current may be conducted to the resistor disc 10 through the driving chamber, and then conducted from the resistor disc 10 to the first conductor 21, where the first conductor 21 transfers the current to the second conductor 22 through the spring contact finger 311, and the second conductor transfers the current to the second support plate 42 through the connection wire 65 on the baffle plate 62, so as to transfer the current.

Still another embodiment of the present utility model provides a circuit breaker including the above-provided closing resistor. By adopting the structure, the switch-on resistor is arranged in the circuit breaker, so that the influence caused by the overvoltage operation can be reduced when the circuit breaker is operated, and the practicability and the structural reliability of the circuit breaker are improved.

The device provided by the embodiment has the following beneficial effects:

(1) Through the arrangement of the plurality of resistor pieces 10 and the adjusting assembly 20, the resistance value of the resistor piece of the switching-on resistor can be adjusted by increasing or decreasing the number of the resistor pieces 10, and the first conductor 21 is ensured to move relative to the second conductor 22 under the action of the elastic piece 23, so that the resistance value of the resistor piece of the switching-on resistor can be conveniently adjusted when the number of the resistor pieces 10 is replaced, the replacement mode is simple and convenient to install, conduction between the first conductor 21 and the second conductor 22 can be ensured, and the generation of operation overvoltage is avoided;

(2) Under the action of the spring contact finger 311, the first conductor 21 can be prevented from shaking in the mounting hole 223, and the spring contact finger 311 has elasticity, so that the mounting is convenient, the first conductor 21 and the second conductor 22 can be elastically matched under the action of the spring contact finger 311, and the first conductor 21 and the second conductor 22 are electrically connected;

(3) Through setting up second snap ring 66, second snap ring 66 cover is established on insulator spindle 61 can carry out spacing cooperation with first backup pad 41 for under the effect of first snap ring 63 and second snap ring 66, can play spacing effect to insulator spindle 61 simultaneously, avoid insulator spindle 61 to take place to rock.

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 utility model. 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 relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

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

Claims (10)

1. A resistive element of a closing resistor, wherein the resistive element of the closing resistor comprises:

a plurality of resistor sheets (10);

the adjusting component (20) comprises a first conductor (21), a second conductor (22) and an elastic piece (23), wherein the first end of the first conductor (21) is electrically connected with a plurality of resistor pieces (10), the second conductor (22) is provided with a mounting hole (223) extending along the axis of the second conductor, the second end of the first conductor (21) is movably arranged in the mounting hole (223) in a penetrating mode and is electrically connected with the second conductor (22), one end of the elastic piece (23) is abutted to the second end of the first conductor (21), and the other end of the elastic piece (23) is abutted to the second conductor (22).

2. The resistor element of a closing resistor according to claim 1, characterized in that an electrically conductive structure (30) is arranged between the outer side wall of the second end of the first conductor (21) and the wall of the mounting hole (223).

3. The resistor of a closing resistor according to claim 2, wherein the conductive structure (30) comprises a conductive member (31), an annular mounting groove (211) is provided on an outer side wall of the second end of the first conductor (21), the conductive member (31) is provided in the annular mounting groove (211), and the conductive member (31) is electrically connected with the outer side wall of the second end of the first conductor (21) and a hole wall of the mounting hole (223), respectively.

4. A resistor element of a closing resistor according to claim 3,

the conductive piece (31) comprises a spring contact finger (311), the spring contact finger (311) is sleeved in the annular mounting groove (211), and the outer side wall of the spring contact finger (311) is attached to the hole wall of the mounting hole (223); and/or the number of the groups of groups,

the conductive piece (31) is made of copper, and a silver-coated coating is arranged on the outer surface of the conductive piece (31).

5. The resistor of a closing resistor according to any of claims 1 to 4, characterized in that the second conductor (22) comprises a cylinder (221) and an end plate (222), the end plate (222) being arranged at one end of the cylinder (221) remote from the first conductor (21), the elastic member (23) comprising a spring (231), the spring (231) being arranged in the cylinder (221), one end of the spring (231) being in abutment with the second end of the first conductor (21), the other end of the spring (231) being in abutment with the end plate (222).

6. A closing resistor, the closing resistor comprising:

a brake closing rack (40);

a closing resistor (50) disposed on the closing frame (40), wherein the closing resistor (50) is as defined in any one of claims 1 to 5.

7. The closing resistor according to claim 6, further comprising an insulating rod (61), wherein two ends of the insulating rod (61) are respectively connected with two ends of the closing frame (40), a plurality of resistor pieces (10) of a resistor piece (50) of the closing resistor are detachably sleeved on the insulating rod (61), a first conductor (21) and a second conductor (22) of the resistor piece (50) of the closing resistor are both sleeved on the insulating rod (61), and one end, far away from the first conductor (21), of the second conductor (22) is connected with the insulating rod (61).

8. A closing resistor according to claim 7, wherein,

a first supporting plate (41) is arranged at the first end of the closing frame (40), a second supporting plate (42) is arranged at the second end of the closing frame (40), the first end of the insulating rod (61) is connected with the first supporting plate (41), and the second end of the insulating rod (61) is connected with the second supporting plate (42);

the switching-on resistor further comprises a baffle (62) and a first clamping ring (63), wherein the baffle (62) is sleeved on the insulating rod (61) and is abutted to one end, far away from the first conductor (21), of the second conductor (22), and the first clamping ring (63) is sleeved on the insulating rod (61) and is in limit fit with the baffle (62).

9. The closing resistor of claim 8, wherein,

the closing resistor further comprises a guide sleeve (64), the guide sleeve (64) is provided with external threads, a threaded hole is formed in the second supporting plate (42), the guide sleeve (64) is in threaded connection with the second supporting plate (42) through the threaded hole, the insulating rod (61) is arranged in the guide sleeve (64) in a penetrating mode, and a connecting lead (65) used for electric connection is arranged between the baffle (62) and the guide sleeve (64);

the closing resistor further comprises a second clamping ring (66), and the second clamping ring (66) is sleeved on the insulating rod (61) and is in limit fit with the first supporting plate (41);

the switching-on frame (40) comprises a transmission bin (43) and an insulating cylinder (44), the first supporting plate (41) is arranged at the first end of the transmission bin (43), the second end of the transmission bin (43) is connected with the first end of the insulating cylinder (44), and the second supporting plate (42) is arranged at the second end of the insulating cylinder (44).

10. A circuit breaker, characterized in that it comprises a closing resistor according to any one of claims 6 to 9.