CN101989505B - Interlocking module and interlocking device composed of it - Google Patents

Abstract

The invention provides an interlocking module for a circuit breaker and an interlocking device consisting of the same. The interlocking module comprises a driving element, a control element and a driven element. The driving element comprises a driving shaft connected with a main shaft of the circuit breaker, and at least one cable. The control element comprises a control shaft for driving the circuit breaker to emergently separate a brake. The driven element can rotate around a rotating shaft thereon and pushes the control element to rotate. The invention also provides the interlocking deviceconsisting of the interlocking module. The extending end of the cable of the interlocking module is connected to the driven element of the other interlocking module. When the driving element on the interlocking module drives the cable to move, the cable drives the driven element on the other interlocking module to rotate so as to push the control element thereon to rotate. When more than two circuit breakers work, the interlocking device can ensure that at least one circuit breaker is in a brake separating state. The interlocking device has a simple structure, small volume, high reliability, and high universality and is convenient to adjust and disassemble.

Description

Interlocking module and interlocking device composed of it

technical field

The present invention relates to an interlocking module and an interlocking device composed of the interlocking module. Specifically, the present invention relates to a mechanical interlocking module which can be used for circuit breaker interlocking. The interlocking module has strong adaptability , which can meet the requirements of double interlock and triple interlock; the present invention also relates to an interlock device composed of such an interlock module, which can ensure that at least one circuit breaker is disconnected when more than two circuit breakers are used. The device is in the open state.

Background technique

In many important power consumption occasions, in order to ensure the stability of power supply, it may be necessary to provide multiple sets of power supply systems, such as a backup power consumption system in addition to the normal power consumption system. But in this case, it must be avoided that all the power systems are in working state. Therefore, it is necessary to set up an interlock device between the disconnector and the circuit breaker to prevent the last circuit breaker from being Also pull the isolating switch to close the switch.

US Patent No. 6,225,581 discloses a mechanical interlocking module of a circuit breaker and an interlocking device composed of the interlocking module, which can be used for interlocking two circuit breakers. As shown in FIG. 1 , it is a structural schematic diagram of the interlocking module 80 arranged on one side of each circuit breaker 90 . The interlocking module 80 includes a support plate 84, active rod 82 and control rod 83. One end of the active rod 82 is provided with a shaft, which passes through the support plate 84 and is connected to the main shaft 92 of the circuit breaker 90. The other end of the active rod 82 is An active rod cable end 85 to which the cable 81 is connected. One end of the control rod 83 is also provided with a shaft, which passes through the support plate 84 and is connected to the control shaft 93 of the circuit breaker 90 , and the other end of the control rod 83 is a control rod cable end 86 .

As shown in Figure 2, it is a schematic diagram of an interlocking device composed of the interlocking modules shown in Figure 1. When used for the interlocking of two circuit breakers 90, an interlock module 80 is set on each circuit breaker 90, and the cable 81 connected on the active rod cable end 85 of one interlock module 80 is connected to the other interlock module 80. The lever cable end 86 of the lock module 80 is connected. In this way, when a circuit breaker 90 is switched on, the main shaft of the circuit breaker rotates counterclockwise, and the active rod 82 of the interlock module connected thereto also rotates counterclockwise, pulling the cable 81 upward. At the same time, the cable 81 pulls down the control rod cable end 86 on another interlock module 80 connected to it at the other end, so that the control rod 83 rotates counterclockwise, and the control rod 83 drives the control shaft lock of the circuit breaker 90 stop, the circuit breaker cannot enter the closing state. In this way, in the case of using two circuit breakers, the interlock device shown in Figure 2 can ensure that at least one of the two circuit breakers is in an open state.

But in this U.S. patent, since the two ends of each cable are respectively connected with the active lever of one interlock module and the control lever of another interlock module, the interlock module and the interlock device it constitutes are only Can be applied to the situation of two interlocking. However, in actual operation, there may be more than two circuit breakers that need to work at the same time. For example, when three circuit breakers need to be connected, the interlock device must have a triple interlock function. At least one of the circuit breakers must be in the open state.

Contents of the invention

Therefore, the present invention aims to provide an interlocking module, which has good versatility, can adapt to different interlocking requirements such as double interlocking and triple interlocking, and is convenient and flexible to install, adjust and disassemble.

Another object of the present invention is to provide an interlocking device that can be used for a circuit breaker. The interlocking device can be used for the interlocking of two circuit breakers, and can realize the interlocking of three or more circuit breakers. It has good scalability and can be used in different occasions, which is convenient and flexible. The interlocking device can realize that when more than two circuit breakers work in parallel, at least one circuit breaker must be in the opening state.

For this reason, the present invention provides an interlocking module, which is used for the interlocking of circuit breakers, and the interlocking module includes:

A drive member comprising a drive shaft connectable to the main shaft of an associated circuit breaker, a drive cable end at one end of the drive member, and at least one drive cable end connected at one end to the drive cable end cable;

a control member comprising a control shaft connectable to the emergency opening control shaft of an associated circuit breaker, a control member control end at one end thereof, and a control member return spring;

The interlocking module also includes:

a follower comprising a rotational shaft about which said follower can rotate, a follower return spring, and a follower cable end positioned at one end of said follower; The rotation can push the control end of the control part to move,

The follower mentioned therein also includes an auxiliary driven lever, which includes a rotating shaft at one end, an auxiliary driven lever return spring that is a torsion spring, and an auxiliary driven lever at the other end. The cable end of the driven rod, the rotating shaft of the driven member is connected to the rod body of the auxiliary driven rod,

The cable end of the follower includes: a self-adjusting terminal with a cable hole; a "U"-shaped spacer, and the two ends of the "U" shape are respectively placed on the cable at the inner and outer wall surfaces of the hole; and a pair of screws and nuts, the screws pass through the washer and the cable holes to press against the cables, and the nuts are screwed on the screws.

The present invention also provides an interlocking device using an interlocking module of the present invention, the interlocking device can be used for interlocking circuit breakers, and the interlocking device includes interlocking modules that can be connected to each circuit breaker, each Each interlock module includes a driving member, which includes a driving shaft connectable to the main shaft of the connected circuit breaker, a driving member cable end located at one end of the driving member, and at least one cable end connected to the driving member at one end. the cable on the cable end;

a control member comprising a control shaft connectable to the emergency opening control shaft of an associated circuit breaker, a control member control end at one end thereof, and a control member return spring;

Each of the interlocking modules also includes a follower, which includes a rotating shaft that allows the follower to rotate around it, a follower return spring, and a follower located at one end of the follower cable end;

The follower mentioned therein also includes an auxiliary driven lever, which includes a rotating shaft at one end, an auxiliary driven lever return spring that is a torsion spring, and an auxiliary driven lever at the other end. The cable end of the driven rod, the rotating shaft of the driven member is connected to the rod body of the auxiliary driven rod,

The cables in each of the interlocking modules are respectively connected to the cable ends of the follower of other interlocking modules or the cable ends of the auxiliary follower lever; when one of the interlocking modules When the cable pulls the follower of the other interlocking module connected to it to rotate, the follower can rotate around the rotation axis and push the control end of the control part to move,

The cable end of the follower includes: a self-adjusting terminal, which has a cable hole for the cable to pass through; a "U"-shaped gasket, and its "U"-shaped The two ends are respectively placed on the inner and outer wall surfaces of the cable hole; and a pair of screws and nuts, the screws pass through the gasket and the cable hole to press against the cable, the A nut is screwed onto the screw to fix the cable.

According to another specific embodiment of the interlocking device of the present invention, it can be used for the interlocking of three circuit breakers, wherein the active part cable end of each interlocking module is connected with two cables, which are respectively connected to the other two on the follower cable end of one of the interlock modules and the auxiliary follower cable end of the other.

According to yet another specific implementation of the interlock module or interlock device of the present invention, wherein the rod body of the auxiliary driven lever is connected to the rotation shaft of the follower, and the return spring of the auxiliary driven lever is torsion spring.

By adopting the interlocking device of the circuit breaker of the present invention, it can be realized that when two or more circuit breakers work in parallel, at least one of them is in the opening state, and it is easy to realize double interlocking and triple interlocking devices according to different usage requirements. . The interlocking device has the advantages of simple structure, small size, high reliability, strong versatility, and convenient adjustment and disassembly.

Description of drawings

The following drawings only schematically illustrate and explain the present invention, and do not limit the scope of the present invention, wherein:

Fig. 1 is a schematic diagram of using an interlocking module;

Fig. 2 is the schematic diagram of the interlocking device that adopts two interlocking modules shown in Fig. 1 to form;

Fig. 3 is the schematic diagram of a kind of interlocking module of the present invention;

Fig. 4 is a schematic diagram of an interlocking device of the present invention constituted by the interlocking module shown in Fig. 3;

Fig. 5 is a kind of structural representation of the follower cable end that is used for interlocking device of the present invention;

Fig. 6 is a schematic diagram of another interlocking module of the present invention;

Fig. 7 is a schematic diagram of another interlocking device of the present invention composed of the interlocking modules shown in Fig. 6 .

Label description

20 active parts

22 driving shaft 24 driving part cable end 26 cable

30 control pieces

32 Control shaft 34 Control part driving end 36 Control part return spring

40 follower

41, 42 Rotating shaft 45 Follower reset spring

46 Follower cable end 62 Self-adjusting terminal 63 Cable hole

64 Washer 65 Nut 66 Screw

47 Auxiliary follower lever 48 Auxiliary follower lever cable end

49 Auxiliary follower lever return spring

70 support plate 72 cable fixing bolt

80 interlocking modules

81 Cable 82 Active Rod 83 Control Rod

84 support piece 85 active rod cable end 86 control rod cable end

90 circuit breaker

92 spindle 93 control axis

100, 200, 300, 400, 500 interlocking modules

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings, in which some similar symbols indicate parts or components with similar functions.

FIG. 3 is a schematic diagram of an interlocking module 100 of the present invention. As shown in the figure, the interlocking module has a support plate 70 , and the support plate 70 includes a driving element 20 , a control element 30 and a driven element 40 . The driving part 20 is provided with a driving shaft 22 , a cable 26 and a driving part cable end 24 . The driving shaft 22 passes through the driving member 20 and the supporting plate 70, and is connected with the corresponding breaker main shaft (not shown in the figure) of the interlocking module 100 . When the main shaft of the circuit breaker rotates for opening or closing operation, the driving shaft 22 rotates, and then drives the driving member 20 to rotate. One end of the cable 26 is connected to the cable end 24 of the active part, and the other end can extend out through the cable fixing bolt 72 arranged on the support plate 70 . When the circuit breaker performs the closing operation, the active part 20 rotates counterclockwise thereupon, pulling the cable end 24 of the active part to move upward, and the cable 26 is also pulled upward.

The control part 30 includes a control shaft 32, a control part driving end 34 and a control part return spring 36, the control shaft 32 passes through the control part 30 and the support plate 70, and is connected to the circuit breaker emergency opening on the interlock module 100 devices (not shown in the figure) are connected. When the driving end 34 of the control part at one end of the control part 30 moves downward, the rotation of the control part 30 can start the emergency opening device of the circuit breaker connected with the interlock module 100, and lock the circuit breaker so that it cannot be closed and operated . One end of the control part return spring 36 is arranged on the opposite end of the control part 30 to the drive end 34, and the other end of the control part return spring 36 is fixed on the support part 70. When the external force pushing the control part drive end 34 to move downward is canceled, The control piece return spring 36 , which is elongated due to the rotation of the control piece 30 , makes the control piece 30 rotate clockwise to reset under the action of the elastic restoring force.

The follower 40 includes a rotational shaft 41 , a follower cable end 46 and a follower return spring 45 . When the cable end 46 of the follower moves downward under the pull of an external force, the follower 40 can rotate around the rotation shaft 41 . One end of the follower return spring 45 is arranged on the follower 40, and the other end is fixed on the support member 70. After the external force pulling the follower driving end 46 to move downward disappears, it is pulled due to the rotation of the follower 40. The long follower return spring 45 makes the follower 40 rotate clockwise to reset under the action of elastic restoring force.

FIG. 4 shows a schematic diagram of an interlocking device composed of the interlocking module 100 shown in FIG. 3 when two circuit breakers are working. Since the two circuit breakers shown in Figure 4 have the same interlocking module, in the part numbers in Figure 4, the same last two digits represent the same components, while the numbers in the hundreds place are used to represent different The interlocking module used by the circuit breaker, that is, the hundreds digit is "1", indicating the components in the first interlocking module 100, and the hundreds digit is "2", indicating the components in the second interlocking module 200 part.

As shown in FIG. 4 , when the interlocking of two circuit breakers is to be realized, the interlocking device includes two interlocking modules 100 and 200 , and each circuit breaker is connected to one interlocking module. One end of the cable 126 of the interlock module 100 is connected to the active part cable end 124, and the other end is connected to the follower cable end 246 of the interlock module 200; similarly, one end of the cable 226 of the interlock module 200 It is connected to the cable end 224 of the driving element, and the other end is connected to the cable end 146 of the follower element of the interlock module 100 .

When the circuit breaker connected to the interlocking module 100 is closed, the driving shaft 122 rotates counterclockwise with the main shaft of the circuit breaker, and the driving part 120 rotates counterclockwise at the same time, driving the cable end 124 of the driving part to move upward, and pulling the cable 126 upward. Since the other end of the cable 126 is connected to the follower cable end 246 of the interlock module 200, when the active piece cable end 124 moves upward, the other end of the cable 126 pulls the follower cable end 246 downward. In this way, the follower 240 rotates counterclockwise around the rotation axis 241. After the follower 240 rotates to the position in contact with the control piece driving end 234 of the control piece 230, the further rotation of the follower 240 drives the control piece driving end 234 to move downward, so that the control piece 230 rotates counterclockwise, driving the control The shaft 232 also rotates counterclockwise, so that the emergency opening device of the circuit breaker connected to the interlocking module 200 also rotates thereupon, so that the circuit breaker is in a locked state, and the circuit breaker cannot be closed, thus satisfying the requirement of one circuit breaker after closing. Another two-interlock request that cannot be closed.

When the circuit breaker connected to the interlocking module 100 is opened, the driving shaft 122 of the interlocking module 100 rotates clockwise, driving the driving part 120 to rotate clockwise, and the cable end 124 of the driving part moves downward, thereby causing the interlocking module 200 to rotate clockwise. The follower cable end 246 of the follower is no longer pulled, and at this moment, the elastic force on the follower return spring 245 makes the follower 240 rotate clockwise and reset, and no longer presses against the control part drive end 234 of the control part 230 , so that the control part 230 rotates clockwise under the action of the return spring 236 of the control part, the emergency opening state of the circuit breaker connected to the interlocking module 200 is suspended, and the interlocking state is released. That is to say, after the circuit breaker connected to the interlock module 100 enters the opening state, the circuit breaker connected to the interlock module 200 can be closed.

When the circuit breaker connected to the interlocking module 200 is switched on, the interlocking process of the interlocking device is similar to the above process, and will not be repeated here.

FIG. 5 is a structural schematic view of the cable end of the follower of the present invention, showing a connection mode of the cable 26 and the follower 40 . The cable 26 that the active part of an interlocking module is connected is connected to the follower cable end of another interlocking module, as shown in Figure 5, the follower cable end 46 at follower 40 one end A self-adjusting terminal 62 is arranged at the position, and a cable hole 63 is opened on the terminal 62, and the cable 26 can pass through the cable hole 63. A “U”-shaped washer 64 is provided outside the self-adjusting terminal 62 , and the two ends of the “U” shape of the washer 64 are placed on the inner wall of the cable hole 63 and the outer wall of the self-adjusting terminal 62 respectively. A screw 66 passes through the part of the gasket 64 in the outer wall of the self-adjusting terminal 62, the hole wall of the self-adjusting terminal 62 and the part of the gasket 64 in the inner wall of the cable hole 63, and presses against the cable 26. The nut 65 Threaded onto the screw 66 , pressing against a corresponding portion of the washer 64 locks the cable 26 to the driven cable end 46 . The protection of the "U"-shaped washer 64 not only reduces damage to the cable 26 when the follower 40 rotates, but also ensures reliable locking. Of course, those skilled in the art can understand that the cable 26 can also be locked on the follower cable end 46 of the follower 40 in any known manner.

The interlocking module of the present invention and the interlocking device constituted by two such interlocking modules have been described above, but the interlocking module of the present invention can be used not only for double interlocking, but also for triple interlocking, that is, in Fig. Adding several components to the follower of the interlocking module shown in 3 can easily realize the interlocking of three circuit breakers. FIG. 6 shows an interlocking module 300 that can be used for interlocking three circuit breakers. For the sake of brevity, the components of the interlock module 300 that are the same as those of the interlock module 100 shown in FIG. 3 will not be described again.

In order to realize the triple interlocking of the circuit breaker, as shown in FIG. Trailing lever cable end 48 and an auxiliary follower lever return spring 49. Since the rotating shaft 41 of the auxiliary driven lever is arranged at one end of the auxiliary driven lever, the auxiliary driven lever return spring 49 is a torsion spring. As shown in Figure 6, the body of the auxiliary driven rod 47 is connected with the rotating shaft 41 of the follower 40, so that when the auxiliary driven rod rotates clockwise around the rotating shaft, the rotating shaft 41 of the driven rod 40 can be driven downward. Movement can also drive the driven rod 40 to move downward. Additionally, two cables 26 extend from the active member cable end 24 of the active member 20 .

FIG. 7 shows a schematic structural diagram of an interlocking device formed by the interlocking module 300 shown in FIG. 6 when three circuit breakers work in parallel. Since the interlocking modules of the three circuit breakers are the same, in the part numbers in Figure 7, the same last two digits represent the same components, while the hundreds digits are used to represent the interlocking modules used by different circuit breakers. That is, the hundreds digit of "3" indicates the components in the first interlocking module, the hundreds digit of "4" indicates the components in the second interlocking module, and the hundreds digit of "5" indicates the third interlocking module. components in an interlocking module.

As shown in FIG. 7 , when the interlocking of three circuit breakers is to be realized, the interlocking device includes three interlocking modules 300 , 400 and 500 , and each circuit breaker is connected to one interlocking module. One end of the two cables 326 of the interlock module 300 is connected to the active part cable end 324, the other end of one cable 326 is connected to the follower cable end 446 of the interlock module 400, and the other end of the other cable 326 is One end is connected to the auxiliary follower cable end 548 of interlock module 500; The follower cable end 546 of the interlock module 500, the other end of the other cable 426 is connected to the auxiliary follower cable end 348 of the interlock module 300; The active member cable ends 524 are connected, the other end of one cable 526 is connected to the follower cable end 346 of the interlock module 300, and the other end of the other cable 526 is connected to the auxiliary follower cable of the interlock module 400. Line terminal 448.

When the circuit breaker connected to the interlock module 300 is closed, the driving shaft 322 rotates counterclockwise with the main shaft of the circuit breaker, and the driving part 320 rotates counterclockwise at the same time, driving the cable end 324 of the driving part to move upwards, and simultaneously pulling the two cables upwards. Line 326. One of the cables 326 pulls the follower cable end 446 to move downward, so that the follower 440 rotates counterclockwise around the rotation axis 441. touch; the other end of the other cable 326 is then connected on the auxiliary driven lever cable end 548 of the interlock module 500, and the cable 326 pulls the auxiliary driven lever cable end 548 to move downwards, so that the auxiliary driven lever cable end 548 moves downward. The moving part 547 rotates clockwise around the rotating shaft 542, and when the rotation is completed, the clockwise rotation of the auxiliary driven rod 547 drives the driven rod 540 to move downwards, just in contact with the control part driving end 534 of the control part 530. In this state, the circuit breaker connected to the interlock module 400 or the interlock module 500 can still be closed.

At this time, if the circuit breaker connected to the interlock module 400 also performs the closing operation, the driving shaft 422 rotates counterclockwise with the main shaft of the circuit breaker, and the driving part 420 rotates counterclockwise at the same time, driving the cable end 424 of the driving part to move upwards, and at the same time Both cables 426 are pulled upward. The other end of one of the cables 426 is connected to the auxiliary driven lever cable end 348 of the interlock module 300, and the cable 426 pulls the auxiliary driven lever cable end 362 to move downward, so that the follower 347 Rotate clockwise around the rotating shaft 342 , and when the rotation is completed, the clockwise rotation of the auxiliary driven rod 347 drives the follower 340 to move downwards, and the driving end 334 of the control member 330 just touches with it. In this state, the downward movement of the follower 340 will not affect the closing and opening operations of the circuit breaker connected to the interlocking module 300 .

Simultaneously, the other end of another cable 426 is connected on the follower cable end 546 of the interlock module 500, and the cable 426 pulls the follower cable end 546 to move downward, so that the follower 540 will rotate around the axis of rotation. 541 counterclockwise rotation. Since the circuit breaker connected to the interlock module 300 is closed, the downward movement of the auxiliary follower lever cable end 548 has made the control piece 547 of the interlock module 500 touch the follower lever 540. The downward movement of the cable end 546 of the movable part drives the control part 530 to rotate counterclockwise, and drives the emergency opening device of the circuit breaker connected to the interlock module 500 to rotate, so that the circuit breaker cannot be closed, thereby satisfying the three requirements. Interlock requirements.

When the circuit breaker connected to the interlocking module 400 is opened, the driving shaft 422 of the interlocking module 400 rotates clockwise, driving the driving part 420 to rotate clockwise, and the cable end 324 of the driving part moves downward, thereby causing the interlocking module 500 to rotate clockwise. The follower cable end 546 of the follower is no longer pulled, and the follower return spring 545 makes the follower 540 rotate clockwise to reset. At this time, on the interlock module 500, only the auxiliary follower cable end 548 Pull it down, but it does not affect the movement of the control part 530. Therefore, under the action of the return spring 536 of the control part, the control part 530 rotates clockwise, and the emergency opening state of the circuit breaker connected with the interlock module 500 is suspended, and the interlock The status is lifted. That is to say, after the circuit breaker connected to the interlock module 400 enters the opening state, the circuit breaker connected to the interlock module 500 can be closed.

Alternatively, when the circuit breaker connected to the interlocking module 300 is opened, the driving shaft 322 of the interlocking module 300 rotates clockwise, driving the driving part 320 to rotate clockwise, and the cable end 324 of the driving part moves downward, thereby causing the interlocking The auxiliary driven lever cable end 548 of the module 500 is no longer pulled, and the auxiliary driven lever return spring 549 makes the auxiliary driven lever 547 rotate counterclockwise to reset. At this time, on the interlock module 500, only the follower cable The end 546 is pulled downwards, but it does not affect the movement of the control part 530. Therefore, under the action of the return spring 536 of the control part, the control part 530 rotates clockwise, and the emergency opening state of the circuit breaker connected with the interlock module 500 is suspended. The interlock state is released. That is to say, if the circuit breaker connected to the interlock module 300 enters the opening state, the circuit breaker connected to the interlock module 500 can also perform a closing operation.

The above described in detail the interlocking process of the interlocking device when the circuit breaker connected to the interlocking module 300 is first closed with reference to FIG. 7 . Those skilled in the art can understand that no matter which circuit breaker is closed first, the interlocking or unlocking process of its interlocking device is similar to the above process, which will not be repeated here.

Although the above description of the interlocking module and interlocking device of the present invention is limited to the situation of double interlocking and triple interlocking, those skilled in the art can understand that if more circuit breakers need to be interlocked, only need to properly adjust the interlocking The number and position of the follower in the lock module and the number of cables connected to the drive of the interlock module can be achieved. When the interlocking device of the circuit breaker is composed of such interlocking modules, only according to the design spirit of the present invention, the cables protruding from the cable ends of the active parts in each interlocking module are connected to other interlocking modules respectively. The cable end of the follower of the module or the cable end of the auxiliary follower lever can meet the interlocking requirements of multiple circuit breakers.

The series of detailed descriptions listed above are only specific descriptions for feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent embodiment or All changes should be included within the protection scope of the present invention.

Claims (4)

1. A kind of interlocking module, this interlocking module is used for the interlocking of circuit breaker, and described interlocking module comprises: A drive member comprising a drive shaft connectable to the main shaft of an associated circuit breaker, a drive cable end at one end of the drive member, and at least one drive cable end connected at one end to the drive cable end cable; a control member comprising a control shaft connectable to the emergency opening control shaft of an associated circuit breaker, a control member control end at one end thereof, and a control member return spring; It is characterized in that the interlocking module also includes: a follower comprising a rotational shaft about which said follower can rotate, a follower return spring, and a follower cable end positioned at one end of said follower; The rotation can push the control end of the control part to move, The follower mentioned therein also includes an auxiliary driven lever, which includes a rotating shaft at one end, an auxiliary driven lever return spring that is a torsion spring, and an auxiliary driven lever at the other end. The cable end of the driven rod, the rotating shaft of the driven member is connected to the rod body of the auxiliary driven rod, The cable end of the follower includes: a self-adjusting terminal with a cable hole; a "U"-shaped spacer, and the two ends of the "U" shape are respectively placed on the cable at the inner and outer wall surfaces of the hole; and a pair of screws and nuts, the screws pass through the washer and the cable holes to press against the cables, and the nuts are screwed on the screws. 2. A kind of interlocking device, this interlocking device is used for the interlocking of circuit breaker, comprises the interlocking module that can be connected with each circuit breaker respectively in the described interlocking device, and described interlocking module comprises: A drive member comprising a drive shaft connectable to the main shaft of an associated circuit breaker, a drive cable end at one end of the drive member, and at least one drive cable end connected at one end to the drive cable end cable; a control member comprising a control shaft connectable to the emergency opening control shaft of an associated circuit breaker, a control member control end at one end thereof, and a control member return spring; It is characterized in that, Each of the interlocking modules also includes a follower, which includes a rotating shaft that allows the follower to rotate around it, a follower return spring, and a follower located at one end of the follower. cable end; The follower mentioned therein also includes an auxiliary driven lever, which includes a rotating shaft at one end, an auxiliary driven lever return spring that is a torsion spring, and an auxiliary driven lever at the other end. The cable end of the driven rod, the rotating shaft of the driven member is connected to the rod body of the auxiliary driven rod, The cables in each of the interlocking modules are respectively connected to the cable ends of the follower of other interlocking modules or the cable ends of the auxiliary follower lever; when one of the interlocking modules When the cable pulls the follower of the other interlocking module connected to it to rotate, the follower can rotate around the rotation axis and push the control end of the control part to move, The cable end of the follower includes: a self-adjusting terminal, which has a cable hole for the cable to pass through; a "U"-shaped gasket, and its "U"-shaped The two ends are respectively placed on the inner and outer wall surfaces of the cable hole; and a pair of screws and nuts, the screws pass through the gasket and the cable hole to press against the cable, the A nut is screwed onto the screw to fix the cable. 3. The interlocking device as claimed in claim 2, wherein there are three circuit breakers, and each said circuit breaker has one said interlocking module, wherein each said interlocking module has two The cables are respectively connected to the cable end of the follower of one of the other two interlocking modules and the cable end of the auxiliary follower lever of the other two interlocking modules. 4. The interlocking device as claimed in claim 3, wherein said rod body of said auxiliary driven lever is connected with said rotation shaft of said follower, and said auxiliary driven lever return spring is a torsion reed.

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