CN213877921U - Novel program lock with interlocking ground cutters - Google Patents

Abstract

The utility model discloses a novel program lock with interlocking ground knifes, which comprises a first lock, a second lock, a first key, a second key, a first cabinet body and a second cabinet body; the first lock comprises a first lock body and a first lock auxiliary body, the second lock comprises a second lock body and a second lock auxiliary body, the first cabinet body comprises a first switch device and a first grounding disconnecting link which are electrically connected with each other, the second cabinet body comprises a second switch device and a second grounding disconnecting link which are electrically connected with each other, the first lock body and the first lock auxiliary body are respectively used for locking the first switch device and the second grounding disconnecting link, and the second lock body and the second lock auxiliary body are respectively used for locking the first grounding disconnecting link and the second switch device; the first lock body and the first lock auxiliary body share a first key, and the second lock body and the second lock auxiliary body share a second key. This novel procedure lock of ground sword interlocking can effectively avoid the cable side to have the condition of mistake to close ground connection switch to take place.

Description

Novel program lock with interlocking ground cutters

Technical Field

The utility model relates to a high voltage distribution technical field, concretely relates to novel program lock of ground sword interlocking.

Background

In the use of the high-voltage cabinet, when the design scheme is a secondary electric load or more, at least two sections of buses are required to be designed for supplying power, so as to ensure the reliability of the power supply scheme. In the scheme that two sections of buses exist, a bus-bar cabinet and a bus-bar lifting cabinet are needed, and the two cabinets play a role in disconnection.

The effect of earthing switch does in looped netowrk cabinet: 1. when the cabinet is in the process of running and stopping, the grounding knife can guide residual voltage into the ground, so that the personal safety is ensured. 2. In the maintenance process, the ground knife is used for preventing misoperation of personnel on the opposite side and sending a power supply to the maintenance cabinet, so that casualties are caused. In summary the presence of a ground knife is a safety measure.

According to safe operating rules, the grounding knife of the ring main unit is an important device for ensuring personnel safety, and is necessary, so that the grounding knife must be designed for the bus coupler cabinet and the bus coupler lifting cabinet. Under the condition that the grounding knife exists, the ring main unit has the function that the cable side has the electric grounding knife to be forcibly locked, so that the situation that the cable is mistakenly closed by the electric grounding knife can be avoided, and the five-prevention requirement is met. The prior art uses a live display and an electromagnetic lock to ground, but the prior art can only solve the following situations: when two-section bus has electricity, the female antithetical couplet promotes the cabinet and is located the position of closing a switch, and the ground sword of female antithetical couplet cabinet is forced to be blocked, avoids the cable side to have electricity mistake to close the ground sword, perhaps has electricity when one section bus, and the female antithetical couplet cabinet is in the position of closing a switch, and the ground sword of female antithetical couplet promotes the cabinet is forced to be blocked, avoids the cable side to have electricity mistake to close the ground sword. Such a situation cannot be solved: when the female ground sword that allies oneself with the cabinet is in closing the position, the female electricity that allies oneself with of two-section, the female antithetical couplet provides the cabinet and can close a floodgate, as long as the female combination promotes cabinet a floodgate, the female cabinet that allies oneself with will short circuit to ground, causes the accident, perhaps the female ground sword that allies oneself with promotes the cabinet is in closing the position, and one section generating line has the electricity, and the female cabinet that allies oneself with can close a floodgate, as long as the female cabinet that allies oneself with closes a floodgate, the female lifting cabinet that allies oneself with will short circuit to ground, causes the accident.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a novel program lock of ground sword interlocking has solved effectively at least and has been in closing the position when the ground sword of female antithetical couplet cabinet, and the two-section female antithetical couplet has the electricity, and the female antithetical couplet provides the cabinet and can close a floodgate, as long as the female antithetical couplet promotes a combined floodgate of cabinet, and the female cabinet that allies oneself with will short circuit to ground, causes the accident, and perhaps the ground sword that the female antithetical couplet promoted the cabinet is in closing the position, and one section generating line has the electricity, and the female cabinet that allies oneself with can close a floodgate, as long as the female cabinet that allies oneself with closes a floodgate, and the female antithetical couplet promotes the cabinet and will short circuit to ground, causes the problem of accident.

(II) technical scheme

In order to solve the technical problem, the utility model provides a following technical scheme: a novel program lock with interlocking ground knifes comprises a first lock, a second lock, a first key, a second key, a first cabinet body and a second cabinet body, wherein the first cabinet body and the second cabinet body are used for connecting buses; the first lock comprises a first lock body and a first lock auxiliary body, the second lock comprises a second lock body and a second lock auxiliary body, the first cabinet body comprises a first switch device and a first grounding disconnecting link which are electrically connected with each other, the second cabinet body comprises a second switch device and a second grounding disconnecting link which are electrically connected with each other, the first lock body and the first lock auxiliary body are respectively used for locking the first switch device and the second grounding disconnecting link, and the second lock body and the second lock auxiliary body are respectively used for locking the first grounding disconnecting link and the second switch device; the first lock body and the first lock auxiliary body share the first key, when the first lock body or the first lock auxiliary body is in an unlocking state, the first lock auxiliary body or the first lock body is in a locking state, the second lock body and the second lock auxiliary body share the second key, and when the second lock body or the second lock auxiliary body is in the unlocking state, the second lock auxiliary body or the second lock body is in a locking state.

So set up, the operation order to the first earthing knife-switch of the first cabinet body and the second switching device of the second cabinet body is: when the second switch device of the second cabinet body needs to be switched on, the first grounding knife switch is firstly opened, namely, the switch is switched off, and the second lock body is controlled by the second key to lock the first grounding knife switch, so that the first grounding knife switch cannot be operated, namely, the first grounding knife switch keeps the state of the switch, and the second lock body is in a locking state, so that the second lock auxiliary body is in an unlocking state, and the switching-on operation of the second switch device can be safely carried out at the moment; when the first grounding knife switch of the first cabinet body needs to be switched on, the second switching device of the second cabinet body is disconnected, namely, the second switch is switched off, and the second lock auxiliary body is controlled by the second key to lock the second switching device, so that the second switching device cannot be operated, namely, the second switching device keeps the state of switching off, and the second lock auxiliary body is in a locking state, so that the second lock body is in an unlocking state, and the first grounding knife switch can be safely switched on. The operation sequence of the first switch device of the first cabinet body and the second grounding disconnecting link of the second cabinet body is as follows: when the first switch device of the first cabinet body needs to be switched on, the second grounding knife switch is firstly opened, namely, the second grounding knife switch is switched off, and the first lock auxiliary body is controlled by the first key to lock the second grounding knife switch, so that the second grounding knife switch cannot be operated, namely, the second grounding knife switch keeps the state of switching off, and the first lock auxiliary body is locked, so that the first lock body is in an unlocked state, and the switching-on operation of the first switch device can be safely carried out at the moment; when the second grounding knife switch of the second cabinet body needs to be switched on, the first switch device of the first cabinet body is disconnected, namely, the first switch device is switched off, and the first lock body is controlled by the first key to lock the first switch device, so that the first switch device cannot be operated, namely, the first switch device keeps the state of switching off, and the first lock body is in a locking state, so that the first lock auxiliary body is in an unlocking state, and the switching on operation of the second grounding knife switch can be safely carried out at the moment. Therefore, the condition that the earthing knife-switch is mistakenly closed on the cable side can be effectively avoided no matter which cabinet body is switched on or off, accidents are avoided, and the use safety is greatly improved.

The first switch device comprises a first operation rotating opening controlled by an operating handle, the first operation rotating opening is controlled by the operating handle, the first switch device is controlled by the operating handle to rotate to open and close the first operation rotating opening, a protruding block is arranged on the first operation rotating opening, the first lock body comprises a first lock tongue, the first lock tongue is movable through a first key and can be opened and closed between the first lock body and the first operation rotating opening, a limiting part is arranged at one end, far away from the first lock body, of the first lock tongue, and when the first switch device is disconnected, the first lock tongue moves in a direction close to the first operation rotating opening, and the limiting part is clamped to prevent the protruding block from rotating the first operation rotating opening.

According to the arrangement, the first lock tongue clamps the convex block through the limiting part so as to lock the first switch device through the first lock body, and through the mechanical structure, the locking reliability of the first lock body can be effectively improved.

And a blocking piece is arranged on the limiting piece, and when the limiting piece blocks the lug, the blocking piece blocks the first operation rotating opening.

So set up, block first operation through the separation blade and change the mouth for operating handle can't insert first operation and change the mouth, and then can't realize the operation to first switching device, has further improved the reliability that first lock body was shutting.

Further setting, first ground connection switch includes first action bars, and this first ground connection switch passes through the rotation realization of first action bars is opened and shut, be equipped with a limiting plate on the first action bars, second lock body includes the second spring bolt, the second spring bolt passes through the second key mobile in the second lock body with in order to realize opening and shutting of second lock body between the first action bars, the second spring bolt is kept away from the one end of second lock body is equipped with blocks, when first ground connection switch was opened, the second spring bolt toward being close to the direction activity of first action bars, and make block and block the limiting plate is in order to prevent the rotation of first action bars.

So set up, the second spring bolt blocks the limiting plate through blockking the piece, realizes that the second locks the body and to the shutting of first ground connection switch, through such mechanical structure, can effectively improve the reliability that the second locks the body shutting.

In a further arrangement, the second switch device comprises a second operation rotating opening controlled by an operating handle, the second lock body comprises a third lock tongue, the second operation rotating opening is identical to the first operation rotating opening in structure, and the third lock tongue is identical to the first lock tongue in structure.

So set up for the second lock auxiliary body is the same with the shutting mode of first lock body to first switching device to the shutting mode of second switching device, thereby simplifies the operation to first switching device and second switching device, improves the simple operation nature.

In a further arrangement, the second grounding switch comprises a second operating rod, the first lock body comprises a fourth lock tongue, the second operating rod has the same structure as the first operating rod, and the fourth lock tongue has the same structure as the second lock tongue.

By the arrangement, the locking mode of the first lock auxiliary body for the second grounding disconnecting link is the same as the locking mode of the second lock auxiliary body for the first grounding disconnecting link, so that the operation of the first grounding disconnecting link and the second grounding disconnecting link is simplified, and the operation convenience is improved.

The first key is inserted into the first lock body or the first lock auxiliary body to realize an unlocking state, and the first key cannot be pulled out when the first lock body or the first lock auxiliary body is in the unlocking state; the second key is inserted into the second lock body and the second lock auxiliary body to achieve an unlocking state, and when the second lock body or the second lock auxiliary body is in the unlocking state, the second key cannot be pulled out.

So set up, because first lock body and the first vice body of lock share first key, second lock body and the vice body of second lock share the second key, when first key or second key can't be extracted for other locks can't be operated, have not only improved the safety in utilization to the lock, can judge the state of lock through the key in addition directly perceivedly, it is more convenient to use.

(III) advantageous effects

Compared with the prior art, the utility model provides a novel procedure lock of ground sword interlocking possesses following beneficial effect:

this novel procedure lock of earth knife interlocking is at the operation order to the first earthing knife-switch of the first cabinet body and the second switching device of the second cabinet body and is: when the second switch device of the second cabinet body needs to be switched on, the first grounding knife switch is firstly opened, namely, the switch is switched off, and the second lock body is controlled by the second key to lock the first grounding knife switch, so that the first grounding knife switch cannot be operated, namely, the first grounding knife switch keeps the state of the switch, and the second lock body is in a locking state, so that the second lock auxiliary body is in an unlocking state, and the switching-on operation of the second switch device can be safely carried out at the moment; when the first grounding knife switch of the first cabinet body needs to be switched on, the second switching device of the second cabinet body is disconnected, namely, the second switch is switched off, and the second lock auxiliary body is controlled by the second key to lock the second switching device, so that the second switching device cannot be operated, namely, the second switching device keeps the state of switching off, and the second lock auxiliary body is in a locking state, so that the second lock body is in an unlocking state, and the first grounding knife switch can be safely switched on. The operation sequence of the first switch device of the first cabinet body and the second grounding disconnecting link of the second cabinet body is as follows: when the first switch device of the first cabinet body needs to be switched on, the second grounding knife switch is firstly opened, namely, the second grounding knife switch is switched off, and the first lock auxiliary body is controlled by the first key to lock the second grounding knife switch, so that the second grounding knife switch cannot be operated, namely, the second grounding knife switch keeps the state of switching off, and the first lock auxiliary body is locked, so that the first lock body is in an unlocked state, and the switching-on operation of the first switch device can be safely carried out at the moment; when the second grounding knife switch of the second cabinet body needs to be switched on, the first switch device of the first cabinet body is disconnected, namely, the first switch device is switched off, and the first lock body is controlled by the first key to lock the first switch device, so that the first switch device cannot be operated, namely, the first switch device keeps the state of switching off, and the first lock body is in a locking state, so that the first lock auxiliary body is in an unlocking state, and the switching on operation of the second grounding knife switch can be safely carried out at the moment. Therefore, the condition that the earthing knife-switch is mistakenly closed on the cable side can be effectively avoided no matter which cabinet body is switched on or off, accidents are avoided, and the use safety is greatly improved.

Drawings

Fig. 1 is a schematic front structural view of the present invention;

fig. 2 is a schematic front structural view of the first switch device locked by the first lock body;

FIG. 3 is a schematic top view of a portion of FIG. 2;

fig. 4 is a schematic front view of the second lock body locking the first grounding switch;

fig. 5 is a schematic diagram of a partial top view of the structure of fig. 4.

In the drawings: 1. a first lock; 11. a first lock body; 12. a first lock sub body; 101. a first bolt; 102. a limiting member; 1021. a baffle plate; 103. a fourth bolt; 2. a second lock; 21. a second lock body; 22. a second lock body; 201. a second bolt; 2011. a blocking member; 202. a third bolt; 3. a first key; 4. a second key; 5. a first cabinet; 51. a first switching device; 511. a first operating swivel; 5101. a bump; 52. a first grounding disconnecting link; 521. a first operating lever; 5201. a limiting plate; 6. a second cabinet; 61. a second switching device; 611. a second operation rotary port; 62. a second grounding disconnecting link; 621. a second operating lever.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, wherein fig. 1 is a schematic front structure diagram of the present invention, fig. 2 is a schematic front structure diagram when the first lock body locks the first switching device, fig. 3 is a schematic partial top view structure diagram of fig. 2, fig. 4 is a schematic front structure diagram when the second lock body locks the first grounding switch, and fig. 5 is a schematic partial top view structure diagram of fig. 4.

The utility model provides a novel program lock of ground sword interlocking, including first lock 1, second lock 2, first key 3, second key 4 and be used for connecting the first cabinet body 5 and the second cabinet body 6 of generating line, first cabinet body 5 and second cabinet body 6 play the effect of connection disconnection, namely first cabinet body 5 is the female cabinet that allies oneself with, second cabinet body 6 is the female cabinet that allies oneself with, first key 3 is corresponding with first lock 1, second key 4 is corresponding with second lock 2; the first lock 1 comprises a first lock body 11 and a first lock auxiliary body 12, the second lock 2 comprises a second lock body 21 and a second lock auxiliary body 22, the first cabinet body 5 comprises a first switch device 51 and a first grounding disconnecting link 52 which are electrically connected with each other and are installed on the first cabinet body 5, the first switch device 51 is an isolating switch, the second cabinet body 6 comprises a second switch device 61 and a second grounding disconnecting link 62 which are electrically connected with each other and are installed on the second cabinet body 6, the second switch device 61 is a load switch, the first lock body 11 and the first lock auxiliary body 12 are respectively used for locking the first switch device 51 and the second grounding disconnecting link 62, and the second lock body 21 and the second lock auxiliary body 22 are respectively used for locking the first grounding disconnecting link 52 and the second switch device 61; the first lock main body 11 and the first lock auxiliary body 12 share the first key 3, and when the first lock main body 11 or the first lock auxiliary body 12 is in the unlocked state, the first lock auxiliary body 12 or the first lock main body 11 is in the locked state, the second lock main body 21 and the second lock auxiliary body 22 share the second key 4, and when the second lock main body 21 or the second lock auxiliary body 22 is in the unlocked state, the second lock auxiliary body 22 or the second lock main body 21 is in the locked state.

Through the above connection manner, specifically, the operation sequence of the first grounding switch 52 of the first cabinet 5 and the second switching device 61 of the second cabinet 6, that is, the operation sequence of the grounding switch of the buscouple cabinet and the load switch of the buscouple lifting cabinet is as follows: when the second switch device 61 of the second cabinet body 6 needs to be switched on, namely, the load switch of the buscouple lifting cabinet needs to be switched on, the first grounding knife switch 52 is firstly switched on, namely, the grounding knife switch of the buscouple lifting cabinet is switched off, and the second lock body 21 is controlled by the second key 4 to lock the first grounding knife switch 52, so that the first grounding knife switch 52 cannot be operated, namely, the first grounding knife switch 52 keeps the switching-off state, and the second lock body 21 is in the locking state, so that the second lock auxiliary body 22 is in the unlocking state, and at the moment, the switching-on operation of the second switch device 61 can be safely carried out; when the first grounding knife switch 52 of the first cabinet 5 needs to be switched on, that is, the grounding knife switch of the buscouple cabinet needs to be switched on, the second switch device 61 of the second cabinet 6 is firstly disconnected, that is, the load switch of the buscouple lifting cabinet is switched off, and the second lock auxiliary body 22 is controlled by the second key 4 to lock the second switch device 61, so that the second switch device 61 cannot be operated, that is, the second switch device 61 keeps the switched-off state, and because the second lock auxiliary body 22 is in the locked state, the second lock main body 21 is in the unlocked state, and at this time, the switching on operation of the first grounding knife switch 52 can be safely performed. The operation sequence of the first switch device 51 of the first cabinet 5 and the second grounding switch 62 of the second cabinet 6, that is, the operation sequence of the disconnecting switch of the buscouple cabinet and the grounding switch of the buscouple lifting cabinet is as follows: when the first switch device 51 of the first cabinet body 5 needs to be switched on, namely, the disconnecting switch of the bus coupler cabinet is switched on, the second grounding switch 62 is firstly opened, namely, the grounding switch of the bus coupler lifting cabinet is switched off, and the first lock auxiliary body 12 is controlled by the first key 3 to lock the second grounding switch 62, so that the second grounding switch 62 cannot be operated, namely, the second grounding switch 62 keeps the switching-off state, and the first lock auxiliary body 12 is locked in the locking state, so that the first lock body 11 is in the unlocking state, and at the moment, the switching-on operation of the first switch device 51 can be safely carried out; when the second grounding knife switch 62 of the second cabinet body 6 needs to be switched on, that is, the grounding knife switch of the female coupler lifting cabinet needs to be switched on, the first switch device 51 of the first cabinet body 5 is firstly disconnected, that is, the isolating switch of the female coupler lifting cabinet is switched off, and the first lock body 11 is controlled by the first key 3 to lock the first switch device 51, so that the first switch device 51 cannot be operated, that is, the first switch device 51 keeps the state of switching off, and because the first lock body 11 is in the locking state, the lock of the first lock auxiliary body 12 is in the unlocking state, and at this time, the switching on operation of the second grounding knife switch 62 can be safely carried out. Therefore, the condition that the grounding knife switch is mistakenly closed on the cable side can be effectively avoided when the bus coupler cabinet or the bus coupler lifting cabinet is subjected to switching operation, so that accidents are avoided, and the use safety is greatly improved.

The first switch device 51 comprises a first operation rotating opening 511 controlled by an operation handle, the first switch device 51 controls the first operation rotating opening 511 to rotate through the operation handle so as to realize opening and closing, a metal bump 5101 is welded on the first operation rotating opening 511, and the first lock body 11 is screwed at the first switch device 51 of the first cabinet body 5, namely at the position of an isolating switch of the female coupling cabinet; the first lock body 11 comprises a first lock tongue 101, after the first key 3 is inserted into the first lock body 11, the first lock tongue 101 can move between the first lock body 11 and the first operation rotating opening 511 through the rotation of the first key 3 so as to realize the opening and closing of the first lock body 11, and one end, far away from the first lock body 11, of the first lock tongue 101 is welded with a metal limiting part 102; when the first switch device 51 is turned off, that is, the operating handle is inserted into the first operating rotating port 511 and rotates to open the disconnecting switch of the main coupler, at this time, the protrusion 5101 follows the first operating rotating port 511 and just faces the first lock body 11, then the first key 3 controls the first lock body 11 to extend the first lock tongue 101 in a direction close to the first operating rotating port 511, and the limiting member 102 is stopped above the protrusion 5101, so that the protrusion 5101 is clamped to prevent the rotation of the first operating rotating port 511, and since the protrusion 5101 is stopped by the limiting member 102, the first operating rotating port 511 cannot rotate, so that the closing operation of the first switch device 51 cannot be performed. The first latch tongue 101 locks the protrusion 5101 through the limiting member 102 to lock the first switch device 51 by the first lock body 11, and by such a mechanical structure, the locking reliability and the operation safety of the first lock body 11 can be effectively improved.

Meanwhile, the blocking piece 1021 is welded on the limiting piece 102, when the limiting piece 102 blocks the bump 5101, the blocking piece 1021 just blocks the first operation rotating opening 511, so that the operation handle cannot be inserted into the first operation rotating opening 511, further the operation on the first switch device 51 cannot be realized, and the locking reliability of the first lock body 11 is further improved.

The first grounding knife switch 52 comprises a first operating rod 521, the first operating rod 521 is sleeved by an operating handle to rotate the first operating rod 521, the first grounding knife switch 52 is opened and closed by the rotation of the first operating rod 521, a metal limiting plate 5201 is welded on the first operating rod 521, and the second lock body 21 is screwed on the first grounding knife switch 52 of the first cabinet body 5, namely the grounding knife switch of the master coupling cabinet; the second lock body 21 comprises a second bolt 201, after the second key 4 is inserted into the second lock body 21, the second bolt 201 can be moved between the second lock body 21 and the first operating rod 521 through the rotation of the second key 4 to realize the opening and closing of the second lock body 21, one end of the second bolt 201 far away from the second lock body 21 is welded with a metal stopper 2011, when the first grounding knife switch 52 is opened, and the operating handle is sleeved into the first operating rod 521 and rotated to separate the grounding knife switch of the master combined cabinet, at this time, the limiting plate 5201 just faces the second lock body 21 after following the rotation of the first operating rod 521, then the second lock body 21 is controlled through the second key 4, the second bolt 201 extends out in the direction close to the first operating rod 521, and the stopper 2011 is stopped above the limiting plate 5201, so as to block the limiting plate 5201 to prevent the rotation of the first operating rod 521, because the limiting plate 5201 is stopped by the stopper 2011, at this time, the operating handle cannot be fitted into the first operating lever 521, so that the first operating lever 521 cannot rotate, and the first grounding switch 52 cannot be closed. The second lock tongue 201 clamps the limit plate 5201 through the blocking piece 2011, so that the second lock body 21 locks the first grounding switch 52, and the reliability of locking the second lock body 21 can be effectively improved through the mechanical structure.

The second switch device 61 comprises a second operation rotating opening 611 controlled by an operation handle, the second lock auxiliary body 22 comprises a third lock tongue 202, the second lock auxiliary body 22 is screwed at the second switch device 61 of the second cabinet body 6, namely at the load switch position of the female joint lifting cabinet, the second operation rotating opening 611 has the same structure with the first operation rotating opening 511, and the third lock tongue 202 has the same structure with the first lock tongue 101. In this way, the opening and closing mode of the second switch device 61 is the same as the opening and closing mode of the first switch device 51, and the locking mode of the second lock auxiliary body 22 to the second switch device 61 is the same as the locking mode of the first lock main body 11 to the first switch device 51, so that the operation to the first switch device 51 and the second switch device 61 is simplified, and the operation convenience is improved.

And the second grounding switch 62 includes a second operating rod 621, the first lock auxiliary body 12 includes a fourth lock tongue 103, the first lock auxiliary body 12 is screwed at the second grounding switch 62 of the second cabinet body 6, that is, at the grounding switch of the buscouple lifting cabinet, the second operating rod 621 has the same structure as the first operating rod 521, and the fourth lock tongue 103 has the same structure as the second lock tongue 201. Similarly, the opening and closing manner of the second grounding switch 62 is the same as the opening and closing manner of the first grounding switch 52, and the locking manner of the first lock body 12 to the second grounding switch 62 is the same as the locking manner of the second lock body 21 to the first grounding switch 52, so that the operation of the first grounding switch 52 and the second grounding switch 62 is simplified, and the convenience in operation is improved.

When the first key 3 is inserted into the first lock body 11 or the first lock auxiliary body 12 to realize an unlocked state and the first lock body 11 or the first lock auxiliary body 12 is in the unlocked state, the first key 3 is inserted into the first lock body 11 or the first lock auxiliary body 12 and cannot be pulled out, and the first key 3 can be pulled out only when the first lock body 11 or the first lock auxiliary body 12 is in a locked state; the second key 4 is inserted into the second lock body 21 and the second lock auxiliary body 22 to achieve the unlocked state, and when the second lock body 21 or the second lock auxiliary body 22 is in the unlocked state, the second key 4 is inserted into the second lock body 21 or the second lock auxiliary body 22 and cannot be pulled out, and only when the second key 4 is used to make the second lock body 21 or the second lock auxiliary body 22 in the locked state can be pulled out. Since the first lock body 11 and the first lock sub-body 12 share the first key 3 and the second lock body 21 and the second lock sub-body 22 share the second key 4, the first key 3 is used to realize: when the first lock body 11 or the first lock auxiliary body 12 is in the unlocked state, the first lock auxiliary body 12 or the first lock body 11 is in the locked state, and the second key 4 is used for realizing that: when the second lock body 21 or the second lock auxiliary body 22 is in the unlocking state, the second lock auxiliary body 22 or the second lock body 21 is in the locking state; therefore, when the first key 3 or the second key 4 cannot be pulled out, other locks which are not inserted with keys cannot be operated, so that the use safety of the first lock 1 and the second lock 2 is improved, and the states of the first lock 1 and the second lock 2 can be judged visually through the positions where the first key 3 and the second key 4 are inserted, so that the lock is more visual and convenient to use and is safer.

In use, the sequence of operations on the first earthing switch 52 of the first cabinet 5 and the second switching device 61 of the second cabinet 6 is: when the second switch device 61 of the second cabinet 6 needs to be switched on, the first grounding switch 52 is opened, i.e. opened, and the second key 4 is inserted into the second lock body 21 to lock the first grounding switch 52, so that the first grounding switch 52 cannot be operated, i.e. the first grounding switch 52 keeps the opened state, at this time, the second lock body 21 is in the locked state, then the second key 4 is pulled out, the second key 4 is inserted into the second lock auxiliary body 22, the second lock auxiliary body 22 is opened, and at this time, the switching-on operation of the second switch device 61 can be safely performed; when the first grounding switch 52 of the first cabinet 5 needs to be switched on, the second switching device 61 of the second cabinet 6 is firstly switched off, i.e. opened, and the second key 4 is inserted into the second lock auxiliary body 22 to lock the second switch auxiliary body, so that the second switching device 61 cannot be operated, i.e. the second switching device 61 keeps the opened state, at this time, the second lock auxiliary body 22 is in the locked state, then the second key 4 is pulled out, the second key 4 is inserted into the second lock main body 21, the second lock main body 21 is opened, and at this time, the switching on operation of the first grounding switch 52 can be safely performed. And the sequence of operations for the first switching device 51 of the first cabinet 5 and the second earthing switch 62 of the second cabinet 6 is: when the first switching device 51 of the first cabinet 5 needs to be switched on, the second grounding switch 62 is opened, namely, the second grounding switch is switched off, the first key 3 is inserted into the first lock auxiliary body 12 to lock the second grounding switch 62, so that the second grounding switch 62 cannot be operated, namely, the second grounding switch 62 keeps the state of switching off, at the moment, the first lock auxiliary body 12 is in a locking state, then the first key 3 is pulled out, the first key 3 is inserted into the first lock body 11, the first lock body 11 is opened, and at the moment, the switching-on operation of the first switching device 51 can be safely carried out; when the second grounding switch 62 of the second cabinet 6 needs to be switched on, the first switching device 51 of the first cabinet 5 is first disconnected, i.e., opened, and the first key 3 is inserted into the first lock body 11 to lock the first switching device 51, so that the first switching device 51 cannot be operated, i.e., the first switching device 51 keeps the opened state, at this time, the first lock body 11 is in the locked state, then the first key 3 is pulled out, the first key 3 is inserted into the first lock body 11, the first lock auxiliary body 12 is opened, and at this time, the switching on operation of the second grounding switch 62 can be safely performed. Therefore, the condition that the earthing knife-switch is mistakenly closed on the cable side can be effectively avoided no matter which cabinet body is switched on or off, accidents are avoided, and the use safety is greatly improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The novel program lock with interlocking ground knives is characterized by comprising a first lock (1), a second lock (2), a first key (3), a second key (4), a first cabinet body (5) and a second cabinet body (6) which are used for connecting buses, wherein the first cabinet body (5) and the second cabinet body (6) have the function of disconnection, the first key (3) corresponds to the first lock (1), and the second key (4) corresponds to the second lock (2); the first lock (1) comprises a first lock body (11) and a first lock auxiliary body (12), the second lock (2) comprises a second lock body (21) and a second lock auxiliary body (22), the first cabinet body (5) comprises a first switching device (51) and a first grounding disconnecting link (52) which are electrically connected with each other, the second cabinet body (6) comprises a second switching device (61) and a second grounding disconnecting link (62) which are electrically connected with each other, the first lock body (11) and the first lock auxiliary body (12) are respectively used for locking the first switching device (51) and the second grounding disconnecting link (62), and the second lock body (21) and the second lock auxiliary body (22) are respectively used for locking the first grounding disconnecting link (52) and the second switching device (61); the first key (3) is shared by the first lock body (11) and the first lock auxiliary body (12), when the first lock body (11) or the first lock auxiliary body (12) is in an unlocking state, the first lock auxiliary body (12) or the first lock body (11) is in a locking state, the second key (4) is shared by the second lock body (21) and the second lock auxiliary body (22), and when the second lock body (21) or the second lock auxiliary body (22) is in the unlocking state, the second lock auxiliary body (22) or the second lock body (21) is in a locking state.

2. The novel program lock with interlocking ground knives as claimed in claim 1, wherein the first switch device (51) comprises a first operation rotating opening (511) controlled by an operation handle, the first switch device (51) controls the rotation of the first operation rotating opening (511) through the operation handle to open and close, a convex block (5101) is arranged on the first operation rotating opening (511), the first lock body (11) comprises a first lock tongue (101), the first lock tongue (101) can be moved between the first lock body (11) and the first operation rotating opening (511) through the first key (3) to open and close the first lock body (11), a limit member (102) is arranged at one end of the first lock tongue (101) far away from the first lock body (11), and when the first switch device (51) is disconnected, the first lock tongue (101) moves towards the direction close to the first operation rotating opening (511), and the limiting piece (102) is clamped with the lug (5101) to prevent the first operation rotating opening (511) from rotating.

3. A novel floor-switch interlocked procedure lock according to claim 2, wherein a stop piece (1021) is provided on the limiting piece (102), and when the limiting piece (102) is locked with the projection (5101), the stop piece (1021) stops the first operating turn (511).

4. The novel program lock with interlocked ground switches as claimed in claim 1, wherein the first grounding switch (52) comprises a first operating rod (521), the first grounding switch (52) is opened and closed by rotation of the first operating rod (521), a position-limiting plate (5201) is disposed on the first operating rod (521), the second lock body (21) comprises a second lock tongue (201), the second lock tongue (201) is movable between the second lock body (21) and the first operating rod (521) by the second key (4) to open and close the second lock body (21), a blocking member (2011) is disposed at an end of the second lock tongue (201) far away from the second lock body (21), and when the first grounding switch (52) is opened, the second lock tongue (201) moves in a direction close to the first operating rod (521), and the blocking piece (2011) is clamped with the limit plate (5201) to prevent the first operating rod (521) from rotating.

5. A novel floor-switch interlocked program lock according to claim 3, characterized in that the second switch device (61) comprises a second operation rotary opening (611) controlled by an operation handle, the second lock auxiliary body (22) comprises a third lock tongue (202), the second operation rotary opening (611) is identical in structure with the first operation rotary opening (511), and the third lock tongue (202) is identical in structure with the first lock tongue (101).

6. A novel procedure lock with interlocked earthing switch and earthing switch according to claim 4, characterized in that, the second earthing switch (62) comprises a second operating rod (621), the first lock body (12) comprises a fourth bolt (103), the second operating rod (621) is the same structure as the first operating rod (521), and the fourth bolt (103) is the same structure as the second bolt (201).

7. A novel program lock with interlocking ground and knife according to claim 1, characterized in that the first key (3) is inserted into the first lock body (11) or the first lock auxiliary body (12) to realize the unlocking state, and when the first lock body (11) or the first lock auxiliary body (12) is in the unlocking state, the first key (3) can not be pulled out; the second key (4) is inserted into the second lock body (21) and the second lock auxiliary body (22) to realize an unlocking state, and when the second lock body (21) or the second lock auxiliary body (22) is in the unlocking state, the second key (4) cannot be pulled out.

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