CN118039425A - Mining high-voltage cabinet interlocking matched circuit breaking protection switch and protection method thereof - Google Patents

Abstract

The invention relates to the technical field of circuit breaking protection, in particular to a circuit breaking protection switch for interlocking cooperation of a mining high-voltage cabinet and a protection method thereof, comprising the following steps: the device comprises a box body, a heat conduction pipe and an iron core, wherein the heat conduction pipe and the iron core are fixed in the box body, a piston disc is slidably arranged in the heat conduction pipe, and a coil is wound on the iron core; the fixed contact is arranged in the box body, a switch adjusting mechanism is arranged in the box body, and a moving contact is connected to the switch adjusting mechanism; the closing locking mechanism is arranged on the heat conduction pipe and is connected with the switch adjusting mechanism; the resistance regulating and controlling assembly is arranged in the box body, an intermittent transmission mechanism connected with the closed locking mechanism is arranged in the heat conducting tube, and a movable rod matched with the resistance regulating and controlling assembly is connected to the intermittent transmission mechanism; the trigger regulating and controlling assembly is arranged on the heat conducting pipe and connected with the movable rod, and the circuit can automatically increase the resistance in the circuit when the circuit is short-circuited so as to protect the circuit.

Description

Mining high-voltage cabinet interlocking matched circuit breaking protection switch and protection method thereof

Technical Field

The invention relates to the technical field of circuit breaking protection, in particular to a circuit breaking protection switch for interlocking cooperation of a mining high-voltage cabinet and a protection method thereof.

Background

The circuit breaking protection switch is a switching device capable of closing, carrying and breaking a current under normal circuit conditions and closing, carrying and breaking a current under abnormal circuit conditions within a prescribed time.

The circuit is used for switching on or switching off a load circuit, plays a role in protecting a circuit, can be automatically switched off when the circuit is seriously overloaded, and can also be used for switching off the circuit when faults occur, so that larger accidents are prevented from being caused, and the use safety of electrical equipment is ensured.

Therefore, the important function of the circuit breaking protection switch in the electrical system is not only reflected in that the circuit breaking protection switch can effectively protect electrical equipment from overload and short circuit damage of current, but also comprises the important protection function of the circuit breaking protection switch on personal safety, however, the existing circuit breaking protection switch cannot enable an maintainer to determine whether the circuit breaking protection switch is disconnected due to overload or short circuit, so that the maintenance difficulty of the maintainer is greatly increased, if the circuit is disconnected due to short circuit, if the circuit is connected blindly, the circuit damage problem is caused due to overlarge current.

Disclosure of Invention

The invention aims to provide a circuit breaking protection switch for interlocking and matching of a mining high-voltage cabinet and a protection method thereof, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions:

An interlocking matched circuit breaking protection switch of a mining high-voltage cabinet, comprising:

The device comprises a box body, a heat conduction pipe and an iron core, wherein the heat conduction pipe and the iron core are arranged in the box body, a piston disc is slidably arranged in the heat conduction pipe, and a coil is wound on the iron core;

The fixed contact is arranged in the box body, a switch adjusting mechanism is arranged in the box body, a moving contact is connected to the switch adjusting mechanism, the moving contact is connected with the coil and is matched with the fixed contact, and the switch adjusting mechanism can adjust the matching state of the moving contact and the fixed contact;

The closing locking mechanism is arranged on the heat conduction pipe and connected with the switch adjusting mechanism and the piston disc, and can lock the moving contact through the switch adjusting mechanism when a circuit is switched on;

Further comprises:

The resistance regulating and controlling assembly is arranged in the box body, an intermittent transmission mechanism connected with the closing and locking mechanism and the piston disc is arranged in the heat conducting tube, a movable rod matched with the resistance regulating and controlling assembly is connected to the intermittent transmission mechanism, and the intermittent transmission mechanism can drive the resistance regulating and controlling assembly to move through the movable rod;

The trigger regulating and controlling assembly is arranged on the heat conduction pipe and connected with the movable rod, and the trigger regulating and controlling assembly can adjust the matching state of the movable rod and the resistance regulating and controlling assembly when the intermittent transmission mechanism moves.

As a further scheme of the invention: the switch adjusting mechanism comprises a swinging rod which is rotatably arranged on the box body, two ends of the swinging rod are respectively fixed with an opening and closing switch and a limiting plate, the limiting plate is provided with a groove, the limiting plate is fixedly connected with the moving contact, and a quick reset assembly connected with the swinging rod is arranged in the box body.

As still further aspects of the invention: the quick resetting component comprises supporting rods which are arranged in the box body and are symmetrically arranged, movable rings which are movably connected with the swinging rods are slidably arranged on the supporting rods, and a number one spring which is abutted to the movable rings is sleeved on the swinging rods;

the swing rod is characterized by further comprising a guide groove arranged on the swing rod, and a first protrusion which is connected with the guide groove in a sliding manner is fixed on the inner wall of the movable ring.

As still further aspects of the invention: the closing locking mechanism comprises an iron column movably arranged in the heat conduction pipe and penetrating through the heat conduction pipe, a bearing plate is arranged at the end part of the iron column, the bearing plate is abutted with the piston disc, and a second spring abutted with the bearing plate is sleeved on the iron column;

the guide rod is arranged in the heat conduction pipe and symmetrically arranged, the guide rod is connected with the bearing plate in a sliding mode and penetrates through the piston disc, and the iron column is provided with a clamping assembly connected with the groove.

As still further aspects of the invention: the clamping assembly comprises a movable plate arranged on the iron column, a connecting rod is fixed on the movable plate, a limiting wheel is fixed on the connecting rod, and the limiting wheel is matched with the groove.

As still further aspects of the invention: the resistance regulating and controlling assembly comprises a resistance rod arranged in the box body, an adjusting sleeve is movably arranged on the resistance rod, a sliding plate is fixed on the side wall of the adjusting sleeve, a through groove is formed in the sliding plate, and the through groove is matched with the movable rod;

still including installing stop lever on the resistance bar, the adjustment sleeve inner wall seted up with stop lever sliding connection's stop slot.

As still further aspects of the invention: the intermittent transmission mechanism comprises a rotating rod rotatably arranged on the piston disc, the rotating rod penetrates through the heat conduction pipe and is movably connected with the iron column, a plurality of spiral grooves and vertical grooves which are circumferentially and equidistantly distributed are formed in the rotating rod, and the end parts of the spiral grooves are communicated with the end parts of the vertical grooves;

The heat-conducting pipe is characterized by further comprising a second protrusion arranged on the iron column, the second protrusion extends into the spiral groove or the vertical groove and can slide along the spiral groove and the vertical groove, and a rotating assembly connected with the rotating rod is arranged on the heat-conducting pipe.

As still further aspects of the invention: the rotating assembly comprises a rotating sleeve which is rotatably arranged on the heat-conducting pipe and sleeved on the rotating rod, a turntable is fixed on the rotating sleeve, a supporting sleeve is fixed on the turntable, and the supporting sleeve is in sliding connection with the movable rod;

The rotary sleeve is characterized by further comprising a second limiting groove formed in the inner wall of the rotary sleeve, and a second limiting rod which is fixedly connected with the second limiting groove in a sliding mode is arranged on the rotary rod.

As still further aspects of the invention: the trigger regulating and controlling assembly comprises a fixed sleeve which is arranged at the bottom of the heat-conducting pipe and sleeved on the rotating sleeve, a lower annular groove, an inclined groove and an upper annular groove are formed in the outer wall of the fixed sleeve, and two ends of the inclined groove are respectively communicated with the ends of the lower annular groove and the upper annular groove;

the movable rod is characterized by further comprising a clamping column arranged on the movable rod, wherein the clamping column stretches into the lower annular groove or the chute or the upper annular groove and can slide along the lower annular groove, the chute and the upper annular groove.

A protection method of a circuit breaking protection switch of a mining high-voltage cabinet in interlocking fit comprises the following steps:

step one: the switch adjusting mechanism can be controlled to move through manual operation so as to drive the movable contact to be communicated with the fixed contact;

Step two: under the action of the closing locking mechanism, the position of the moving contact is locked, so that the circuit is ensured to be always kept in a closed state under the condition that the circuit is normal;

Step three: if the circuit is short-circuited, the current flowing through the coil can be rapidly increased, the closed locking mechanism moves under the action of the iron core and the coil, and the moving contact and the fixed contact are rapidly separated under the action of the switch adjusting mechanism, so that the circuit is ensured to be rapidly opened;

step four: the closed locking mechanism also drives the intermittent transmission mechanism to move, and the resistance regulating and controlling component is controlled to move through the movable rod, so that the resistance in the circuit is increased;

Step five: if the electric appliance at the short circuit part is checked, the current flowing through the circuit is increased again, and the circuit resistance is larger at the moment, so that the circuit can be protected, the closing locking mechanism is controlled to move under the action of the current, so that the circuit is disconnected again, and meanwhile, the resistance regulating and controlling component is reset under the action of the triggering regulating and controlling component.

Compared with the prior art, the application has the beneficial effects that: according to the application, when a circuit is short-circuited, the resistance in the circuit is increased, so that the circuit is protected, under the action of the switch regulating mechanism, the moving contact and the fixed contact are in an on state, and under the action of the switch regulating mechanism, the moving contact and the fixed contact are in a locking state, when the circuit is short-circuited, the current flowing through the coil is increased, the magnetic force generated by the coil and the iron core is increased, so that the switch regulating mechanism is driven to move, when the switch regulating mechanism is separated from the switch regulating mechanism, the moving contact is controlled to be rapidly separated from the fixed contact, so that the circuit is ensured to be disconnected, meanwhile, the switch regulating mechanism is driven to move, and the moving contact is controlled to move through the moving rod, so that the resistance in the circuit is increased, when an overhauling person overhauls the circuit, the switch regulating mechanism is required to be controlled to reset, so that the moving contact and the fixed contact are switched on again, if the circuit is normal, at the moment, the current can be overhauled, if the circuit is connected to the circuit of the short circuit, the current can be increased again, the circuit is protected under the action of the resistance, the intermittent drive mechanism is increased, the magnetic force is controlled, the moving contact is controlled to be separated from the fixed contact again, and the moving contact is controlled to move again, and the moving component is controlled to be disconnected again, and the moving normally, and the moving contact is prevented from the moving component.

Drawings

Fig. 1 is a schematic diagram of an embodiment of a circuit breaker protection switch for interlocking cooperation with a mining high-voltage cabinet.

Fig. 2 is a schematic diagram of a semi-sectional structure of an embodiment of a circuit breaker protection switch for interlocking cooperation of a mining high-voltage cabinet.

Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.

Fig. 4 is a schematic structural view of the inside of the case in one embodiment of the circuit breaker with interlocking cooperation of the mining high-voltage cabinet.

Fig. 5 is a schematic diagram of connection relationships among a part of a closed locking mechanism, a part of an intermittent transmission mechanism, a trigger control assembly and a resistance control assembly of an embodiment of a circuit breaker protection switch with interlocking cooperation of a mining high-voltage cabinet.

Fig. 6 is an exploded view of a part of the closed locking mechanism and a part of the intermittent transmission mechanism of an embodiment of a circuit breaker protection switch with interlocking cooperation of a mining high-voltage cabinet.

Fig. 7 is a schematic diagram of a partially semi-sectioned structure of an embodiment of a circuit breaker protection switch for interlocking cooperation of a mining high-voltage cabinet.

Fig. 8 is a schematic diagram of an explosion structure of a trigger control assembly and a portion of an intermittent drive mechanism in one embodiment of a circuit breaker protection switch for interlocking cooperation of a mining high-voltage cabinet.

Fig. 9 is a schematic structural diagram of a resistance control assembly, a part of intermittent transmission mechanism, and a trigger control assembly in one embodiment of a circuit breaker protection switch with interlocking cooperation of a mining high-voltage cabinet.

Fig. 10 is a schematic structural view of a partially closed locking mechanism and a switch adjusting mechanism of an embodiment of a circuit breaker protection switch with interlocking cooperation of a mining high-voltage cabinet.

Fig. 11 is an exploded view of a part of a switch-off adjusting mechanism in an embodiment of a circuit breaker protection switch for interlocking cooperation of a mining high-voltage cabinet.

In the figure: 1. a case; 2. a heat conduction pipe; 3. a swinging rod; 4. opening and closing; 5. a limiting plate; 6. a groove; 7. a moving contact; 8. a stationary contact; 9. an iron core; 10. a coil; 11. a guide groove; 12. a movable ring; 13. a support rod; 14. a first spring; 15. a first bulge; 16. an iron column; 17. a movable plate; 18. a connecting rod; 19. a limiting wheel; 20. a receiving plate; 21. a second spring; 22. a guide rod; 23. a piston disc; 24. a rotating lever; 25. a spiral groove; 26. a vertical groove; 27. a second bulge; 28. rotating the sleeve; 29. a turntable; 30. a fixed sleeve; 31. a lower ring groove; 32. a chute; 33. an upper ring groove; 34. a support sleeve; 35. a movable rod; 36. a clamping column; 37. a resistance rod; 38. an adjustment sleeve; 39. and a sliding plate.

Detailed Description

The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In addition, an element in the present disclosure may be referred to as being "fixed" or "disposed" on another element or being directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 11, in an embodiment of the present invention, a circuit breaking protection switch for interlocking and matching a mining high-voltage cabinet includes: the box body 1, the heat conduction pipe 2, the iron core 9, the piston disc 23, the coil 10, the static contact 8, the switch regulating mechanism, the moving contact 7, the closed locking mechanism, the resistance regulating component, the movable rod 35, the intermittent transmission mechanism and the trigger regulating component, when the circuit is ensured to be short-circuited, the moving contact 7 is rapidly separated from the static contact 8 to ensure that the circuit is disconnected when the circuit is overhauled, the resistance in the circuit can be increased to protect the circuit when the circuit is short-circuited, under the action of the switch regulating mechanism, the moving contact 7 and the static contact 8 are in an on state, and under the action of the closed locking mechanism, the moving contact 7 is in a locking state, when the circuit is short-circuited, the current flowing through the coil 10 is increased, the magnetic force generated by the coil and the iron core 9 is increased, so that the closed locking mechanism is driven to move, when the closed locking mechanism is separated from the switch regulating mechanism, the switch regulating mechanism is also driven by the intermittent transmission mechanism to move, the moving transmission mechanism is controlled by the movable rod 35 so that the resistance in the circuit is controlled to increase, the resistance in the circuit, the moving state is controlled by the moving contact 7, when the circuit is ensured to be disconnected, the circuit is required to be overhauled, and the current is controlled to be greatly increased, and the current is required to be controlled to be separated from the static contact 8 when the circuit is overhauled, and the current is normally is controlled to be closed, and opened again when the circuit is high, and the moving contact is required to be closed and opened when the circuit is closed and opened, meanwhile, under the action of the trigger regulating and controlling component, the resistor regulating and controlling component is controlled to move again, so that the resistor in the circuit returns to a normal state, and the circuit is ensured not to be damaged due to overlarge current in the overhaul process.

The method specifically comprises the following steps of:

the heat conduction device comprises a box body 1, a heat conduction pipe 2 and an iron core 9, wherein the heat conduction pipe 2 and the iron core 9 are arranged in the box body 1, a piston disc 23 is slidably arranged in the heat conduction pipe 2, and a coil 10 is wound on the iron core 9;

Referring to fig. 1,2, 4, 10 and 11, a fixed contact 8 is installed in the box 1, a switch adjusting mechanism is provided in the box 1, a moving contact 7 is connected to the switch adjusting mechanism, the moving contact 7 is connected to the coil 10 and is matched with the fixed contact 8, the switch adjusting mechanism can adjust the matched state of the moving contact 7 and the fixed contact 8, the switch adjusting mechanism comprises a swinging rod 3 rotatably installed on the box 1, two ends of the swinging rod 3 are respectively fixed with an opening and closing gate 4 and a limiting plate 5, a groove 6 is formed in the limiting plate 5, the limiting plate 5 is fixedly connected with the moving contact 7, a quick reset assembly connected with the swinging rod 3 is provided in the box 1, the quick reset assembly comprises a supporting rod 13 installed in the box 1 and symmetrically arranged, a movable ring 12 movably connected with the swinging rod 3 is slidably installed on the supporting rod 13, and a movable ring 14 is sleeved on the swinging rod 3 and is abutted against the movable ring 12; the swing rod 3 is characterized by further comprising a guide groove 11 formed in the swing rod 3, and a first protrusion 15 which is connected with the guide groove 11 in a sliding manner is fixed on the inner wall of the movable ring 12.

In detail, when the circuit is completed, in order to prevent the circuit from being damaged due to overload or short circuit, the circuit protection needs to be completed to ensure the electricity safety, therefore, in the initial state, the spring No. 14 is in a compressed state, so that the movable ring 12 is located at the end of the travel towards the direction of the limiting plate 5, the protrusion No. 15 is located at the end of the travel at one side of the guide groove 11, the groove 6 is in a separated state with the closing locking mechanism, the movable contact 7 and the fixed contact 8 are in a separated state, when the circuit needs to be completed, the opening and closing 4 can be held by hand and the opening and closing 4 is driven to move, so that the limiting plate 5 is driven to move through the swinging rod 3, the position of the groove 6 is changed, the limiting plate 5 also drives the movable contact 7 to move towards the direction of the fixed contact 8, and under the action of the swinging rod 3, the guide groove 11 is driven by the protrusion No. 15, so that the spring No. 14 is also driven to move along the length direction of the supporting rod 13, when the movable contact 7 moves to the position matched with the fixed contact 8, the groove 6 moves to the position with the closing locking mechanism, and the maximum compression of the spring No. 14 is ensured under the action of the locking mechanism.

Preferably, the piston disc 23 separates the heat conducting tube 2 into two spaces, the space far away from the iron core 9 is filled with expansion gas, if overload condition occurs in the circuit, current in the circuit is gradually increased, and heat is generated, so that the temperature in the box 1 is increased, heat is conducted into the heat conducting tube 2, the expansion gas is rapidly expanded, so that the piston disc 23 drives the closing locking mechanism to move, when the closing locking mechanism moves to a position separated from the groove 6, the first spring 14 is elastically released, the movable ring 12 is driven to move towards the limit plate 5, under the action of the guide groove 11 and the first bulge 15, the limit plate 5 is rapidly moved towards an initial angle state, the movable contact 7 is driven to be rapidly separated from the fixed contact 8 until the movable ring 12 is reset, the circuit is in an open state, the problem that an electrical appliance is not damaged due to overload is solved, and similarly, if short circuit condition occurs in the circuit, the current flowing through the coil 10 is rapidly increased, so that the coil 10 and the iron core 9 generate magnetic force is increased, so that the closing locking mechanism is rapidly driven to move to a position separated from the groove 6, the piston disc is rapidly controlled to be rapidly open, the circuit is rapidly controlled, the circuit is rapidly opened, the circuit 23 is rapidly is opened, and the overload condition is rapidly is controlled, and the overload condition is rapidly is opened, and the overload condition is caused, and the overload condition is rapidly is caused.

Referring to fig. 2 and fig. 4-7, a closing locking mechanism is disposed on the heat-conducting tube 2 and connected with the switch adjusting mechanism and the piston disc 23, the closing locking mechanism can lock the moving contact 7 through the switch adjusting mechanism when a circuit is connected, the closing locking mechanism comprises an iron column 16 movably mounted in the heat-conducting tube 2 and penetrating through the heat-conducting tube 2, a bearing plate 20 is mounted at the end of the iron column 16, the bearing plate 20 is abutted with the piston disc 23, and a second spring 21 abutted with the bearing plate 20 is sleeved on the iron column 16; the heat-conducting pipe is characterized by further comprising a guide rod 22 which is arranged in the heat-conducting pipe 2 and symmetrically, wherein the guide rod 22 is in sliding connection with the bearing plate 20 and penetrates through the piston disc 23, a clamping assembly which is connected with the groove 6 is arranged on the iron column 16, the clamping assembly comprises a movable plate 17 which is arranged on the iron column 16, a connecting rod 18 is fixed on the movable plate 17, a limiting wheel 19 is fixed on the connecting rod 18, and the limiting wheel 19 is matched with the groove 6.

It should be noted that, in the initial state, the limiting wheel 19 and the groove 6 are in a clamping state, so that the moving contact 7 and the fixed contact 8 are connected and cannot be disconnected, the second spring 21 is in a compression state, so that the bearing plate 20 is abutted against the piston disc 23, if overload condition occurs in the circuit, the current flowing through the coil 10 cannot be too large, the magnetic force generated by the coil 10 and the iron core 9 cannot overcome the supporting force provided by the second spring 21, but with the increase of the current, the generated heat will gradually increase, the expansion gas under the piston disc 23 expands and pushes the piston disc 23 to move, so that the iron column 16 is driven to synchronously move by the bearing plate 20, the iron column 16 is also driven to move by the connecting rod 18 through the movable plate 17, so that the limiting wheel 19 moves towards the direction away from the groove 6, when the circuit load reaches the maximum, the limiting wheel 19 will be separated from the groove 6, so as to control the brake contact 7 to be separated from the fixed contact 8, the circuit is disconnected, in the process, the piston disc 23 and the bearing plate 20 are always in an abutting state, the intermittent transmission mechanism is ensured not to move, the resistance in the circuit is not changed, if the circuit is in a short circuit condition, the current flowing through the coil 10 is instantaneously increased, the magnetic force generated by the coil 10 and the iron core 9 is increased, the supporting force provided by the second spring 21 is overcome, the iron column 16 is adsorbed, the bearing plate 20 is enabled to move and separate from the piston disc 23, the iron column 16 also controls the limit wheel 19 to separate from the groove 6 through the movable plate 17 and the connecting rod 18, the circuit is disconnected, the intermittent transmission mechanism is controlled to move due to the relative displacement between the bearing plate 20 and the piston disc 23, the resistance in the circuit is increased through the resistance regulating and controlling assembly, and when the circuit is switched on again due to misoperation of a worker is prevented, and the current is too large to damage the circuit.

Further comprises:

Referring to fig. 2-5 and 9, a resistance adjusting and controlling assembly is disposed in the case 1, the resistance adjusting and controlling assembly includes a resistance rod 37 mounted in the case 1, an adjusting sleeve 38 is movably mounted on the resistance rod 37, a sliding plate 39 is fixed on a side wall of the adjusting sleeve 38, a through groove is formed on the sliding plate 39, and the through groove is matched with the movable rod 35; still including installing the gag lever post No. one on the resistance bar 37, adjusting sleeve 38 inner wall offer with gag lever post sliding connection's a spacing groove No. one.

Further, the resistor rod 37 and the adjusting sleeve 38 are connected to the circuit, the resistor rod 37 is made of a resistor material, when the position of the adjusting sleeve 38 on the resistor rod 37 is changed, the resistor in the circuit is correspondingly changed, in the initial state, the movable rod 35 stretches into the through groove, the adjusting sleeve 38 is positioned at the stroke end of one side of the resistor rod 37, so that the resistor provided by the resistor rod 37 to the circuit is minimum, if the circuit is short-circuited, the receiving plate 20 and the piston disc 23 are relatively displaced, so that the intermittent transmission mechanism is driven to move, the sliding plate 39 is driven to move through the movable rod 35 and the through groove, so that the adjusting sleeve 38 moves along the length direction of the resistor rod 37, the resistor in the circuit is increased under the action of the resistor rod 37 and the adjusting sleeve 38, the circuit is ensured not to be switched on again under the short-circuit condition, and the problem that the circuit is damaged is caused by a large current is generated, wherein the resistor reduces the current when the circuit is switched on, and the current still generates a magnetic force for overcoming the supporting force of the second spring 21, so that the circuit is still switched off under the short-circuit condition, and the operator can check the circuit.

Referring to fig. 2-9, an intermittent transmission mechanism connected with the closing locking mechanism and the piston disc 23 is arranged in the heat conducting tube 2, a movable rod 35 matched with the resistance regulating and controlling component is connected to the intermittent transmission mechanism, the intermittent transmission mechanism can drive the resistance regulating and controlling component to move through the movable rod 35, the intermittent transmission mechanism comprises a rotating rod 24 rotatably arranged on the piston disc 23, the rotating rod 24 penetrates through the heat conducting tube 2 and is movably connected with the iron column 16, a plurality of spiral grooves 25 and vertical grooves 26 which are distributed in circumference equidistance are formed in the rotating rod 24, and the end parts of the spiral grooves 25 are communicated with the end parts of the vertical grooves 26; the heat conducting pipe (2) is provided with a rotating assembly connected with the rotating rod (24), wherein the rotating assembly comprises a rotating sleeve (28) rotatably arranged on the heat conducting pipe (2) and sleeved on the rotating rod (24), a rotary disc (29) is fixed on the rotating sleeve (28), a supporting sleeve (34) is fixed on the rotary disc (29), and the supporting sleeve (34) is in sliding connection with the movable rod (35); the rotary sleeve 28 further comprises a second limit groove formed in the inner wall of the rotary sleeve 28, and a second limit rod which is in sliding connection with the second limit groove is fixed on the rotary rod 24.

Still further, the spiral groove 25 is symmetrically arranged up and down, under the action of the No. two springs 21 in an initial state, the bearing plate 20 is abutted against the piston disc 23, so that the No. two protrusions 27 are located at the connection positions of the spiral groove 25 and the vertical groove 26 in a lower position, when the circuit is overloaded, the piston disc 23 drives the rotating rod 24 and the bearing plate 20 to synchronously move, so that the position of the No. two protrusions 27 in the spiral groove 25 cannot be changed, under the action of the guide rod 22, the piston disc 23, the bearing plate 20 and the iron column 16 are ensured not to rotate in the movement process, if the circuit is shorted, under the action of magnetic force, the iron column 16 moves along the length direction of the guide rod 22, and controls the bearing plate 20 to be separated from the piston disc 23, the iron column 16 also drives the No. two protrusions 27 to move along the length direction of the vertical groove 26 until the No. two protrusions 27 move into the spiral groove 25 located above, under the action of the No. two protrusions 27 and the spiral groove 25, the rotating rod 24 rotates, and the stop rod is ensured to slide along the rotating sleeve 29, and the rotating rod is driven by the rotating rod 29 to automatically rotate along the length direction of the electric resistance sleeve, and the electric resistance is further increased, and the resistance is kept in a state of automatically, and the resistance is increased, and the resistance is realized.

Referring to fig. 4, 5, and 7-9, a trigger control assembly is disposed on the heat-conducting tube 2 and connected to the movable rod 35, the trigger control assembly can adjust the matching state of the movable rod 35 and the resistance control assembly when the intermittent transmission mechanism moves, the trigger control assembly includes a fixed sleeve 30 mounted at the bottom of the heat-conducting tube 2 and sleeved on the rotating sleeve 28, a lower ring groove 31, a chute 32, and an upper ring groove 33 are opened on the outer wall of the fixed sleeve 30, and two ends of the chute 32 are respectively connected with the ends of the lower ring groove 31 and the upper ring groove 33; and a locking post 36 mounted on the movable rod 35, wherein the locking post 36 extends into the lower ring groove 31 or the chute 32 or the upper ring groove 33, and can slide along the lower ring groove 31 and the chute 32 as well as the upper ring groove 33.

In the initial state, the clamping post 36 is positioned in the middle of the lower ring groove 31, when the circuit is short-circuited, the rotating sleeve 28 rotates and drives the turntable 29 to rotate, the turntable 29 drives the movable rod 35 and the clamping post 36 to move through the fixed sleeve 30, the clamping post 36 slides along the lower ring groove 31 to ensure that the movable rod 35 is always in a matched state with the through groove, when the rotating rod 24 rotates for a quarter turn, the circuit is in an off state, the rotating rod 24 does not rotate any more, the clamping post 36 just moves to the on position of the lower ring groove 31 and one of the inclined grooves 32, when an overhauler overhauls the circuit, the circuit needs to be connected, at the moment, the iron post 16 moves towards the piston disc 23, the second boss 27 slides into the spiral groove 25 along the length direction of the vertical groove 26 and under the action of the spiral groove 25, after the rotating rod 24 continues to rotate for a quarter turn, the circuit is completed, the rotating rod 24 drives the movable rod 35 and the clamping column 36 to move through the turntable 29, the clamping column 36 enters the chute 32, the movable rod 35 moves along the length direction of the fixed sleeve 30 and is separated from the through groove, the sliding plate 39 does not move, when the clamping column 36 is separated from the chute 32 and moves to the middle position of the upper annular groove 33, the circuit is completed, the resistance after the circuit is completed is not changed, if the electric appliance is normal, the circuit is not disconnected, at the moment, other electric appliances can be connected and the investigation is continued, if the electric appliance is short-circuited, the current is increased again, the movement of the iron column 16 is controlled, the circuit is disconnected again, meanwhile, under the action of the second bulge 27, the rotating rod 24 is rotated again for a quarter turn, the movement of the movable rod 35 and the clamping column 36 is controlled, the clamping post 36 will be separated from the upper ring groove 33 and enter the connection position of the chute 32 and the lower ring groove 31 through the other chute 32, the movable rod 35 will enter the through groove again, at this time, the electric appliance can be maintained by a worker, after the maintenance is completed, the control circuit is connected, the iron post 16 is reset, the rotating rod 24 is enabled to rotate for a quarter circle again under the action of the second bulge 27, and just one circle is rotated, so that the sliding plate 39 is controlled to reset through the movable rod 35, and the resistance in the control circuit is returned to the normal value again through the adjusting sleeve 38.

A protection method of a circuit breaking protection switch of a mining high-voltage cabinet in interlocking fit comprises the following steps:

step one: the switch adjusting mechanism can be controlled to move through manual operation so as to drive the movable contact 7 to be communicated with the fixed contact 8;

step two: under the action of the closing locking mechanism, the position of the moving contact 7 is locked, so that the circuit is ensured to be always kept in a closed state under the condition that the circuit is normal;

Step three: if the circuit is short-circuited, the current flowing through the coil is rapidly increased, the closed locking mechanism moves under the action of the iron core 9 and the coil 10, and the moving contact 7 and the fixed contact 8 are rapidly separated under the action of the switch adjusting mechanism, so that the circuit is ensured to be rapidly opened;

step four: the closing locking mechanism also drives the intermittent transmission mechanism to move, and the resistance regulating and controlling component is controlled to move through the movable rod 35, so that the resistance in the circuit is increased;

Step five: if the electric appliance at the short circuit part is checked, the current flowing through the circuit is increased again, and the circuit resistance is larger at the moment, so that the circuit can be protected, the closing locking mechanism is controlled to move under the action of the current, so that the circuit is disconnected again, and meanwhile, the resistance regulating and controlling component is reset under the action of the triggering regulating and controlling component.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. An interlocking matched circuit breaking protection switch of a mining high-voltage cabinet, comprising:

the device comprises a box body (1), a heat conduction pipe (2) and an iron core (9) which are arranged in the box body (1), wherein a piston disc (23) is slidably arranged in the heat conduction pipe (2), and a coil (10) is wound on the iron core (9);

the fixed contact (8) is arranged in the box body (1), a switch adjusting mechanism is arranged in the box body (1), a moving contact (7) is connected to the switch adjusting mechanism, the moving contact (7) is connected with the coil (10) and is matched with the fixed contact (8), and the switch adjusting mechanism can adjust the matching state of the moving contact (7) and the fixed contact (8);

The closing locking mechanism is arranged on the heat conducting pipe (2) and connected with the switch adjusting mechanism and the piston disc (23), and can lock the movable contact (7) through the switch adjusting mechanism when a circuit is switched on;

Characterized by further comprising:

The resistance regulating and controlling assembly is arranged in the box body (1), an intermittent transmission mechanism connected with the closing and locking mechanism and the piston disc (23) is arranged in the heat conducting tube (2), a movable rod (35) matched with the resistance regulating and controlling assembly is connected to the intermittent transmission mechanism, and the intermittent transmission mechanism can drive the resistance regulating and controlling assembly to move through the movable rod (35);

The trigger regulating and controlling assembly is arranged on the heat conducting pipe (2) and connected with the movable rod (35), and the trigger regulating and controlling assembly can regulate the matching state of the movable rod (35) and the resistance regulating and controlling assembly when the intermittent transmission mechanism moves.

2. The mining high-voltage cabinet interlocking matched circuit breaking protection switch according to claim 1, wherein the switch adjusting mechanism comprises a swinging rod (3) rotatably installed on the box body (1), two ends of the swinging rod (3) are respectively fixed with an opening and closing switch (4) and a limiting plate (5), a groove (6) is formed in the limiting plate (5), the limiting plate (5) is fixedly connected with the movable contact (7), and a quick reset assembly connected with the swinging rod (3) is arranged in the box body (1).

3. The mining high-voltage cabinet interlocking matched circuit breaker protection switch according to claim 2, wherein the quick resetting component comprises a supporting rod (13) which is arranged in the box body (1) and is symmetrically arranged, a movable ring (12) which is movably connected with the swinging rod (3) is slidably arranged on the supporting rod (13), and a first spring (14) which is abutted with the movable ring (12) is sleeved on the swinging rod (3);

The swing mechanism is characterized by further comprising a guide groove (11) formed in the swing rod (3), and a first protrusion (15) which is connected with the guide groove (11) in a sliding manner is fixed on the inner wall of the movable ring (12).

4. The mining high-voltage cabinet interlocking matched circuit breaker protection switch according to claim 2, wherein the closing locking mechanism comprises an iron column (16) movably installed in the heat conducting pipe (2) and penetrating through the heat conducting pipe (2), a bearing plate (20) is installed at the end part of the iron column (16), the bearing plate (20) is abutted with the piston disc (23), and a second spring (21) abutted with the bearing plate (20) is sleeved on the iron column (16);

The heat-conducting pipe is characterized by further comprising guide rods (22) which are arranged in the heat-conducting pipe (2) and symmetrically, wherein the guide rods (22) are connected with the bearing plate (20) in a sliding mode and penetrate through the piston disc (23), and the iron columns (16) are provided with clamping components connected with the grooves (6).

5. The mining high-voltage cabinet interlocking matched circuit breaker protection switch according to claim 4, wherein the clamping assembly comprises a movable plate (17) mounted on the iron column (16), a connecting rod (18) is fixed on the movable plate (17), a limiting wheel (19) is fixed on the connecting rod (18), and the limiting wheel (19) is matched with the groove (6).

6. The mining high-voltage cabinet interlocking matched circuit breaker protection switch according to claim 1, wherein the resistance regulation and control assembly comprises a resistance rod (37) arranged in the box body (1), an adjusting sleeve (38) is movably arranged on the resistance rod (37), a sliding plate (39) is fixed on the side wall of the adjusting sleeve (38), a through groove is formed in the sliding plate (39), and the through groove is matched with the movable rod (35);

the electric resistance adjusting device is characterized by further comprising a first limiting rod arranged on the resistance rod (37), and a first limiting groove which is connected with the first limiting rod in a sliding mode is formed in the inner wall of the adjusting sleeve (38).

7. The mining high-voltage cabinet interlocking matched circuit breaker protection switch according to claim 4, wherein the intermittent transmission mechanism comprises a rotating rod (24) rotatably installed on the piston disc (23), the rotating rod (24) penetrates through the heat conducting pipe (2) and is movably connected with the iron column (16), a plurality of spiral grooves (25) and vertical grooves (26) which are distributed at equal intervals in circumference are formed in the rotating rod (24), and the end parts of the spiral grooves (25) are communicated with the end parts of the vertical grooves (26);

The heat conducting pipe is characterized by further comprising a second protrusion (27) arranged on the iron column (16), the second protrusion (27) stretches into the spiral groove (25) or the vertical groove (26) and can slide along the spiral groove (25) and the vertical groove (26), and the heat conducting pipe (2) is provided with a rotating assembly connected with the rotating rod (24).

8. The mining high-voltage cabinet interlocking matched circuit breaker protection switch according to claim 7, wherein the rotating assembly comprises a rotating sleeve (28) rotatably installed on the heat conducting pipe (2) and sleeved on the rotating rod (24), a rotary table (29) is fixed on the rotating sleeve (28), a supporting sleeve (34) is fixed on the rotary table (29), and the supporting sleeve (34) is in sliding connection with the movable rod (35);

The rotary sleeve is characterized by further comprising a second limiting groove formed in the inner wall of the rotary sleeve (28), and a second limiting rod which is fixedly connected with the second limiting groove in a sliding mode is fixed on the rotary rod (24).

9. The mining high-voltage cabinet interlocking matched circuit breaker protection switch of claim 8, wherein the trigger control assembly comprises a fixed sleeve (30) which is arranged at the bottom of the heat conducting pipe (2) and sleeved on the rotating sleeve (28), a lower annular groove (31), a chute (32) and an upper annular groove (33) are formed in the outer wall of the fixed sleeve (30), and two ends of the chute (32) are respectively communicated with the ends of the lower annular groove (31) and the upper annular groove (33);

The movable rod is characterized by further comprising a clamping column (36) arranged on the movable rod (35), wherein the clamping column (36) stretches into the lower annular groove (31) or the chute (32) or the upper annular groove (33) and can slide along the lower annular groove (31) and the chute (32) as well as the upper annular groove (33).

10. A protection method for a mining high-voltage cabinet interlocking circuit breaking protection switch, which adopts the mining high-voltage cabinet interlocking circuit breaking protection switch according to any one of claims 1-9, and is characterized by comprising the following steps:

Step one: the switch adjusting mechanism can be controlled to move through manual operation so as to drive the movable contact (7) to be communicated with the fixed contact (8);

step two: under the action of the closing locking mechanism, the position of the moving contact (7) is locked, so that the circuit is ensured to be always kept in a connected state under the condition that the circuit is normal;

Step three: if the circuit is short-circuited, the current flowing through the coil can be rapidly increased, the closing locking mechanism moves under the action of the iron core (9) and the coil (10), and the moving contact (7) and the fixed contact (8) are rapidly separated under the action of the switching regulating mechanism, so that the circuit is ensured to be rapidly disconnected;

step four: the closing locking mechanism also drives the intermittent transmission mechanism to move, and the resistance regulating and controlling component is controlled to move through the movable rod (35), so that the resistance in the circuit is increased;

Step five: if the electric appliance at the short circuit part is checked, the current flowing through the circuit is increased again, and the circuit resistance is larger at the moment, so that the circuit can be protected, the closing locking mechanism is controlled to move under the action of the current, so that the circuit is disconnected again, and meanwhile, the resistance regulating and controlling component is reset under the action of the triggering regulating and controlling component.