CN216215410U - Mining explosion-proof and intrinsically safe permanent magnet type high-voltage vacuum power distribution device - Google Patents

Abstract

The application discloses mining flame-proof and intrinsic safety type permanent magnet high-voltage vacuum power distribution device, which comprises a shell, a fixed contact arranged on the shell, a circuit breaker arranged on the shell in a sliding mode, a front door, a hinge module used for enabling the front door to be connected to the shell in a rotating mode, a driving module used for driving the circuit breaker to move and a locking module used for limiting the front door to move when a power supply is switched on. This application has the effect that improves the security when staff opens the qianmen.

Description

Mining explosion-proof and intrinsically safe permanent magnet type high-voltage vacuum power distribution device

Technical Field

The application relates to the field of high-voltage vacuum power distribution devices, in particular to a mining explosion-proof and intrinsically safe permanent magnet type high-voltage vacuum power distribution device.

Background

The mining explosion-proof and intrinsically safe permanent magnet type high-voltage vacuum power distribution device is suitable for underground coal mines with explosive dangerous gas and dust, controls, protects and measures a power supply system with a three-phase alternating current neutral point with rated voltage of 6-10KV, rated frequency of 50Hz and rated current of 1250A and not directly grounded, and can be used for directly starting a high-voltage motor.

In the related technology, the mining explosion-proof and intrinsic safety type permanent magnet high-voltage vacuum power distribution device comprises a shell, a front door hinged to the shell, a fixed contact arranged in the shell and a circuit breaker arranged in the shell in a sliding mode.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the circuit breaker is overhauled, a front door needs to be opened, the front door is directly opened in a power-on state, and a worker can directly bring the circuit breaker with high voltage electricity and a static contact, so that the danger when the worker opens the front door is large and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to improve the safety of workers when opening a front door, the application provides a mining explosion-proof and intrinsically safe permanent magnet type high-voltage vacuum power distribution device.

The application provides a mining flame proof and intrinsic safety type permanent magnet type high-voltage vacuum power distribution device adopts the following technical scheme:

a mining explosion-proof and intrinsic safety type permanent magnet high-voltage vacuum power distribution device comprises a shell, a fixed contact arranged on the shell, a circuit breaker arranged on the shell in a sliding mode, a front door, a hinge module used for enabling the front door to be connected to the shell in a rotating mode, a driving module used for driving the circuit breaker to move and a locking module used for limiting the front door to move when a power supply is switched on.

Through adopting above-mentioned technical scheme, when normally using this application vacuum distribution device, need slide the circuit breaker to the direction that is close to the static contact, conflict until circuit breaker and static contact.

The locking module limits the front door to move when the power supply is switched on, so that the circuit breaker is required to be driven by the driving module to move towards the direction away from the fixed contact when the circuit breaker is overhauled, the circuit breaker is separated from the fixed contact, and the power supply is disconnected. And then the front door is moved, so that the staff can overhaul the structure inside the breaker or the shell.

Through the structure, after the circuit breaker is separated from the fixed contact, the front door can be moved by an operator, so that the operator is not easy to open the front door under the condition that the circuit breaker and the fixed contact are not separated, and the safety of the operator when the front door is opened is improved.

Optionally, the hinge module includes a long shaft disposed on the housing and an upper hinge slidably sleeved on the long shaft, the upper hinge is connected to the front door, the upper hinge can rotate relative to the long shaft, the housing is provided with a nail button, the front door is provided with a door closing groove along the axial direction of the long shaft, and the door closing groove is used for allowing the end of the nail button to extend into the door closing groove.

Through adopting above-mentioned technical scheme, when going on to the inside structure of casing, need earlier the axial displacement of qianmen along the major axis, until the nail knot shifts out the groove of closing a door, rotate again and open the qianmen to make the staff can overhaul the inside structure of casing.

Through the structure, the front door is locked, and the structure is simple. And the front door is opened by sliding the front door and then rotating the front door, so that the condition that non-workers directly open the front door in a rotating mode is limited.

Optionally, the latching module includes a first latching mechanism, the first latching mechanism includes a door rack disposed on the front door, a first latching rod slidably disposed on the housing, a reset piece connected to the latching rod, and an unlocking component for driving the first latching rod to move in a direction away from the front door, the circuit breaker is linked with the first latching rod through the unlocking component, the reset piece is used for driving the first latching rod to move in a direction close to the front door, and the first latching rod is used for abutting against the door rack and limiting the nail from moving out of the latching groove.

Through adopting above-mentioned technical scheme, when the circuit breaker contradicts with the static contact, under the effect that resets, first blocking lever is to the direction removal that is close to the qianmen. At the moment, the front door is moved along the axial direction of the long shaft, and the door rack is abutted against the first locking rod, so that the nail buckle is limited to move out of the door locking groove.

When the driving module drives the breaker to be separated from the fixed contact, the breaker drives the first locking rod to move towards the direction far away from the front door through the unlocking assembly in the moving process, so that the end part of the first locking rod is staggered with the door rack, and the door rack cannot be abutted against the first locking rod when the front door moves.

Through the structure, when the front door is opened by a worker, the front door can be opened by sliding the circuit breaker to be separated from the fixed contact, so that the safety of the worker in the process of opening the front door is improved, and the unlocking can be realized in the process of separating the circuit breaker from the fixed contact, and the operation is convenient.

Optionally, the unblock subassembly is including articulating the shifting piece on the casing and setting up the dog on the circuit breaker, be provided with first atress end and second atress end on the shifting piece, the articulated department of shifting the piece is located between first atress end and the second atress end, first atress end is used for the dog to contradict, first locking lever is including the unblock portion, the second atress end is used for contradicting with the lateral wall that the unblock portion is close to the qianmen.

Through adopting above-mentioned technical scheme, when separating circuit breaker and static contact, slide the circuit breaker to the direction that is close to the qianmen earlier, the circuit breaker drives the dog and removes, and the dog supports to press on first atress end and drive first atress end and rotate to the direction that is close to the qianmen at the in-process that removes to drive second atress end and rotate to the direction of keeping away from the qianmen. The second stressed end is pressed on the side wall, close to the front door, of the unlocking part to drive the first locking rod to move towards the direction far away from the front door, so that the first locking rod is staggered with the door rack, and further, a worker can slide the front door.

Through the structure, the front door can be unlocked by workers in the process of separating the breaker from the fixed contact, the structure is simple, and the operation is convenient.

Optionally, the unlocking assembly further comprises an unlocking shaft, one end of the unlocking shaft is connected to the toggle piece, the other end of the unlocking shaft penetrates through the shell, and the unlocking shaft is rotatably arranged on the shell.

By adopting the technical scheme, after the circuit breaker is overhauled, the circuit breaker is firstly placed into the shell, the stirring piece is rotated outside the shell through the unlocking shaft, the stirring piece drives the first locking rod to move into the shell completely, so that the first locking rod is staggered with the door rack, and further, a worker can move to the front door to be closed.

Through above-mentioned structure, not only help the qianmen to close, still make the dog with stir when the cooperation of piece appears the deviation, can manually stir the piece rotation in the outer drive of casing, improved this application distribution device's fault-tolerant rate.

Optionally, the first latching mechanism further comprises a reset assembly, and the reset assembly is used for driving the second force-bearing end to rotate in a direction away from the front door.

Through adopting above-mentioned technical scheme, rotate to the direction of keeping away from the qianmen through the subassembly drive second atress end that resets, help first locking lever slip unblock on the one hand, on the other hand makes the second atress end contradict with the unblock end all the time, has restricted to stir piece and unblock axle and has taken place to rock and rotate, has improved and has stirred the stability of piece and unblock axle.

Optionally, be connected with the combination switch who is used for controlling casing power supply circuit break-make on the casing in the rotation, the shutting module still includes second blocked mechanical system, second blocked mechanical system is including sliding the second locking pole that sets up on the casing and connecting the shut plate on combination switch, the eccentric groove of stepping down that is used for supplying second locking pole tip to stretch into that is provided with on the shut plate, when combination switch rotates the power supply circuit to the casing and opens circuit, the groove of stepping down aligns with second locking pole, when the one end of second locking pole is contradicted with the shut plate, the other end of second locking pole surpasss the casing, second locking pole is used for contradicting with the qianmen and restricts the nail and detain and move out the shut door groove.

By adopting the technical scheme, when the power supply circuit from the non-rotating combination switch to the shell is broken, the abdicating groove is staggered with the second locking rod, even if the second locking rod slides along the direction from the front door to the shell, the end part of the second locking rod can also be abutted against the locking plate, at the moment, the other end of the second locking rod exceeds the shell and is abutted against the front door when the front door slides, and therefore the nail buckle is limited to move out of the door closing groove.

When the combination switch rotates to the power supply circuit of the shell and is broken, the locking plate rotates to the abdication groove along with the combination switch to be aligned with the second locking rod, the second locking rod is slid at the moment, the end part of the second locking rod can penetrate through the abdication groove and continuously moves, the end part of the second locking rod is moved to be staggered with the front door, and then a worker can slide the front door and open the front door.

Through the structure, after the power supply circuit of the combined switch is rotated to the shell and is broken, the second locking rod is slid, and the front door can be slid by a worker. When the combined switch is rotated to connect the power supply circuit of the shell, the second locking rod is firstly slid until the end part of the second locking rod exceeds the shell, namely the second locking rod limits the sliding of the front door, and then the power supply circuit of the shell can be connected. The security when having improved the staff and using this application distribution device.

Optionally, a locking seat is arranged on the housing, and the second locking rod penetrates through the locking seat and is in threaded connection with the locking seat.

Through adopting above-mentioned technical scheme, through rotating second shutting pole to make second shutting pole slide on shutting seat. Compared with the second locking rod which is directly arranged on the locking seat in a sliding mode, the second locking rod is not prone to sliding caused by mistaken touch, and the locking effect of the second locking rod on the front door is further improved.

Optionally, the driving module includes a screw rotatably connected to the housing and a driving block connected to the circuit breaker, and the screw penetrates through and is threadedly connected to the driving block.

Through adopting above-mentioned technical scheme, drive the screw rod through modes such as motor and rotate, can slide along the length direction of screw rod through drive block drive circuit breaker. Through the movement of the circuit breaker driven by the structure, the structure is simple, and the operation of workers is convenient.

Optionally, the driving module further includes a transmission shaft rotatably connected to the front door, the transmission shaft is slidably disposed on the front door, and the screw rod is provided with a transmission groove for inserting the end of the transmission shaft.

By adopting the technical scheme, when the screw rod is driven to rotate by a manual rotation mode outside the shell, the transmission shaft slides in a direction close to the screw rod, so that the end part of the transmission shaft is inserted into the transmission groove, and then the transmission shaft is rotated to drive the screw rod to rotate. Through the structure, if rotate through motor drive screw, and when drive screw pivoted motor damaged, the staff still can move in the outer manual drive circuit breaker of casing, has improved this application distribution device's fault-tolerant rate, helps the staff to overhaul the mobile circuit breaker when the circuit breaker.

In summary, the present application includes at least one of the following beneficial technical effects:

when the vacuum power distribution device is normally used, the breaker needs to slide to be abutted against the fixed contact; because the locking module limits the front door to move when the power supply is switched on, when a worker overhauls the circuit breaker, the circuit breaker is driven to move to be separated from the fixed contact through the driving module, and then the front door is moved and opened; through the structure, after the circuit breaker is separated from the fixed contact, the front door can be moved to be opened by workers, so that the safety of the workers when the front door is opened is improved;

the front door is prevented from being opened by a worker when the breaker collides with the static contact through the first locking mechanism, the safety of the worker when the front door is opened is improved, and in the process that the breaker moves and is separated from the static contact, the first locking rod is driven by the unlocking component to move to be dislocated with the door rack, so that the limitation of the first locking rod on the front door is removed, and the operation is simple and convenient;

through the second locking mechanism, after the combined switch rotates to the power supply circuit of the shell and is opened, the front door can be opened in a sliding mode, the second locking rod limits the front door to slide, the combined switch can rotate to the power supply circuit of the shell to be connected, and therefore the safety of the power distribution device is further improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a schematic view showing a partial structure of a circuit breaker and a stationary contact according to an embodiment of the present application.

Fig. 3 is a partial structural schematic view highlighting a hinge module in an embodiment of the present application.

Fig. 4 is a schematic diagram illustrating a partial explosion of the highlighting driver module in an embodiment of the present application.

Fig. 5 is an enlarged schematic view at a in fig. 2.

Description of reference numerals:

1. a housing; 11. static contact; 12. a circuit breaker; 13. buckling; 131. a locking portion; 132. a connecting portion; 14. a combination switch; 2. a front door; 21. a door closing groove; 211. a locking groove; 212. connecting grooves; 3. a hinge module; 31. a hinge mount; 32. a long axis; 33. an upper hinge; 331. a lifting groove; 34. a lower hinge; 35. a linkage block; 36. an eccentric wheel; 37. a handle; 4. a drive module; 41. a screw; 411. a transmission groove; 42. a drive block; 43. a drive shaft; 431. a rotating part; 432. a transmission section; 44. a shaft sleeve; 45. a return spring; 5. a latching module; 51. a first latching mechanism; 511. a door rack; 512. a rod sleeve; 5121. a telescopic groove; 513. a first locking lever; 5131. a sliding part; 5132. a relief portion; 5133. an unlocking portion; 514. a reset member; 515. an unlocking assembly; 5151. a stopper; 5152. a toggle piece; 5153. unlocking the shaft; 5154. a first force-bearing end; 5155. a second force-bearing end; 516. a reset assembly; 5161. a spring hanging pin; 5162. a tension spring; 52. a second locking mechanism; 521. a locking plate; 5211. a yielding groove; 522. a locking seat; 523. a second latching lever.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a mining explosion-proof and intrinsically safe permanent magnet type high-voltage vacuum power distribution device. Referring to fig. 1 and 2, the mining explosion-proof and intrinsically safe permanent magnet high-voltage vacuum power distribution device comprises a shell 1 with an inner cavity, a fixed contact 11 fixed in the shell 1, a circuit breaker 12 arranged in the shell 1, a front door 2 used for shielding the opening of the inner cavity of the shell 1, a hinge module 3 used for enabling the front door 2 to be rotatably connected to the shell 1, a driving module 4 used for driving the circuit breaker 12 to move, and a locking module 5 used for limiting the front door 2 to move when a power supply is switched on.

Referring to fig. 2, the circuit breaker 12 is slidably disposed in the housing 1 along a direction close to or away from the stationary contact 11, the abutting of the circuit breaker 12 and the stationary contact 11 is power on, and the separation of the circuit breaker 12 and the stationary contact 11 is power off.

Referring to fig. 1 and 3, the hinge module 3 includes two hinge bases 31, a long shaft 32, an upper hinge 33, a lower hinge 34, a link block 35, an eccentric wheel 36, and a handle 37. The two hinge bases 31 are fixed on the housing 1, the length direction and the axial lead of the long shaft 32 extend along the vertical direction, and the long shaft 32 penetrates through the two hinge bases 31 and is fixedly connected with the two hinge bases 31. The upper hinge 33 and the lower hinge 34 are fixed on the side wall of the front door 2, the upper hinge 33, the lower hinge 34 and the linkage block 35 are rotatably sleeved on the long shaft 32, and the upper hinge 33 and the lower hinge 34 are arranged on the long shaft 32 in a sliding manner along the axial direction of the long shaft 32.

Referring to fig. 3, the upper hinge 33 is provided with a lifting groove 331, the lifting groove 331 is configured to allow the eccentric wheel 36 to rotate, and a groove wall of the lifting groove 331 is configured to abut against the eccentric wheel 36. The end of the linkage block 35 penetrates through the upper hinge 33 to the lifting groove 331, the upper hinge 33 is arranged on the linkage block 35 in a sliding mode along the vertical direction, the eccentric wheel 36 is eccentrically hinged on the linkage block 35, and the handle 37 is fixedly connected with the eccentric wheel 36 and a hinge shaft on the eccentric wheel 36. The handle 37 is rotated to rotate the eccentric wheel 36, so that the eccentric wheel 36 abuts against the upper or lower groove wall of the lifting groove 331, thereby causing the upper hinge 33 to slide in the vertical direction, and thus driving the front door 2 to slide in the vertical direction with respect to the housing 1.

Referring to fig. 2, six buttons 13 are provided on the housing 1, three of the buttons 13 are fixed at the upper end of the housing 1, and the other three buttons 13 are fixed at the lower end of the housing 1. The nail 13 includes a connecting portion 132 fixed to the housing 1 and a locking portion 131 fixed to a side of the connecting portion 132 remote from the housing 1, the locking portion 131 having a larger longitudinal width than the connecting portion 132. Six door closing grooves 21 are formed in the inner side wall of the front door 2, one opening of the door closing groove 21 faces downward, and the opening of the door closing groove 21 is used for the end portions of the locking portion 131 and the connecting portion 132 to extend into. The door closing groove 21 is divided into a locking groove 211 and a connecting groove 212 from the inner side of the front door 2 to the outer side of the front door 2, the width of the locking groove 211 is larger than that of the connecting groove 212, the locking groove 211 is used for the locking portion 131 to be inserted, and the connecting groove 212 is used for the end portion of the connecting portion 132 to be inserted. When the front door 2 shields the inner cavity opening of the housing 1, the locking portion 131 is inserted in the locking groove 211, and the connecting portion 132 is inserted in the connecting groove 212.

Referring to fig. 2 and 4, the driving module 4 includes a screw 41, a driving block 42, a transmission shaft 43, a bushing 44 and a return spring 45, and the bushing 44 is fixedly connected to the front door 2. The transmission shaft 43 penetrates through and is slidably disposed on the sleeve 44 along the length direction of the screw 41, and the transmission shaft 43 includes a rotating portion 431 rotatably connected to the sleeve 44 and a transmission portion 432 fixed to a side of the rotating portion 431 adjacent to the housing 1. Both ends of the return spring 45 are fixedly connected to the bushing 44 and the rotating portion 431, respectively, and the extending and contracting direction of the return spring 45 is the same as the sliding direction of the transmission shaft 43. When the return spring 45 is in the natural state, a gap exists between the transmission part 432 and the screw 41.

Referring to fig. 2 and 4, the driving block 42 is fixed to the bottom wall of the circuit breaker 12, one end of the screw 41 is rotatably connected to the housing 1, the screw 41 penetrates and is screwed to the driving block 42, and the screw 41 extends in the sliding direction of the circuit breaker 12. Two mutually communicated transmission grooves 411 are formed in the end face, close to the front door 2, of the screw 41, and the transmission grooves 411 are used for inserting the transmission parts 432.

Referring to fig. 2 and 4, when the circuit breaker 12 is driven to move, a tool such as a socket wrench is inserted into the bushing 44 and sleeved on the transmission portion 432, and then the transmission shaft 43 is pushed toward the screw 41, so that the transmission portion 432 is inserted into one of the transmission slots 411, and at this time, the return spring is compressed. The shaft 43 is then rotated to rotate the screw 41 and thereby move the circuit breaker 12. When the return spring 45 is in a natural state, a gap exists between the transmission part 432 and the screw rod 41, so that the screw rod 41 cannot be driven to rotate by directly rotating the transmission shaft 43, and further the circuit breaker 12 and the static contact 11 are not easy to separate due to the fact that a worker mistakenly touches the rotation transmission shaft 43.

Referring to fig. 2 and 3, the locking module 5 includes a first locking mechanism 51 and a second locking mechanism 52.

Referring to fig. 2 and 5, the first latch mechanism 51 includes four door racks 511, a lever sleeve 512, a first latch lever 513, a reset piece 514, an unlocking member 515, and a reset member 516, and the four door racks 511 are fixed to the inner side wall of the front door 2. The rod sleeve 512 is fixed on the inner wall of the shell 1, and a telescopic groove 5121 is formed on the rod sleeve 512. The first locking rod 513 is penetratingly and slidably disposed on the rod cover 512, and the first locking rod 513 is extended into the telescopic groove 5121.

Referring to fig. 2 and 5, the first locking lever 513 includes a sliding portion 5131, a relief portion 5132, and an unlocking portion 5133 fixedly connected in sequence, and the cross-sectional diameter of the relief portion 5132 is smaller than that of the sliding portion 5131 and that of the unlocking portion 5133. The reset piece 514 is disposed in the telescopic groove 5121, and the reset piece 514 is a compression spring. The reset piece 514 is sleeved on the sliding part 5131, one end of the reset piece 514 is fixedly connected with the sliding part 5131, and the other end of the reset piece 514 abuts against the side wall of the telescopic groove 5121 close to the front door 2. When the reset member 514 is in a natural state, the end of the sliding portion 5131 extends beyond the housing 1, and the sliding portion 5131 is located on a moving path of one of the door racks 511. The movement of the nail 13 out of the door-closing groove 21 is restricted by the interference of the first locking lever 513 with the door rack 511.

Referring to fig. 2 and 5, the unlocking assembly 515 is used for driving the first latching rod 513 to move away from the front door 2, the unlocking assembly 515 includes a stop 5151 fixed on the side wall of the circuit breaker 12, a toggle member 5152 hinged on the inner wall of the housing 1, and an unlocking shaft 5153 fixed on the toggle member 5152 at one end, and the other end of the unlocking shaft 5153 penetrates out of the housing 1 and is rotatably connected with the housing 1. The toggle member 5152 is provided with a first force-bearing end 5154 and two second force-bearing ends 5155, and the first force-bearing end 5154 and the second force-bearing end 5155 are divided into two sides located at the hinge joint of the toggle member 5152. The first force bearing end 5154 is used for abutting against the stopper 5151, the two second force bearing ends 5155 are respectively located at two sides of the abdicating part 5132, and both the two second force bearing ends 5155 are used for abutting against the side wall of the unlocking part 5133 close to the front door 2.

Referring to fig. 2 and 5, in the process that the circuit breaker 12 slides away from the fixed contact 11, the stopper 5151 moves to abut against the first force bearing end 5154. When the circuit breaker 12 is further moved, the stopper 5151 presses against the first force-bearing end 5154 and pushes the first force-bearing end 5154 to rotate in a direction approaching the front door 2, so that the two second force-bearing ends 5155 rotate in a direction away from the front door 2. The second force receiving end 5155 presses against the unlocking portion 5133 and pushes the first locking lever 513 to move, so that the end of the sliding portion 5131 moves out of the moving path of the door rack 511.

Referring to fig. 2 and 5, the reset assembly 516 is used for driving the second force-bearing end 5155 to rotate in a direction away from the front door 2, the reset assembly 516 includes a hanging spring pin 5161 fixed on the inner wall of the housing 1 and a tension spring 5162, the hanging spring pin 5161 is located on one side of the toggle member 5152 away from the front door 2, one end of the tension spring 5162 is fixedly connected with the hanging spring pin 5161, and the other end of the tension spring 5162 is fixedly connected with the two second force-bearing ends 5155. Under the action of the tension spring 5162, the second force-bearing end 5155 always collides with the side wall of the unlocking part 5133 close to the front door 2, so that the toggle member 5152 and the unlocking shaft 5153 are not easy to rotate. The force applied to the first latching lever 513 by the tension spring 5162 is smaller than the force applied to the first latching lever 513 by the reset member 514, so that the end of the sliding part 5131 is located on the moving path of one of the door racks 511 when the tension spring 5162, the reset member 514 and the toggle member 5152 are all in the natural state.

Referring to fig. 3, a combination switch 14 is rotatably connected to the housing 1, and the power supply circuit of the housing 1 is controlled to be switched on and off by rotating the combination switch 14. The second locking mechanism includes a locking plate 521 fixed to the combination switch 14, a locking seat 522 fixed to the housing 1, and a second locking lever 523 penetrating and screwed to the locking seat 522, and the second locking lever 523 is rotated such that the second locking lever 523 slides on the locking seat 522 along a length direction thereof. An abdicating groove 5211 penetrates through the end surface of the locking plate 521 facing the locking seat 522, the abdicating groove 5211 is eccentrically arranged on the locking plate 521, the abdicating groove 5211 is used for allowing one end of the second locking rod to extend into, and the other end of the second locking rod is used for abutting against the front door 2.

Referring to fig. 3, when the combination switch 14 is rotated until the power supply circuit of the housing 1 is disconnected, the escape groove 5211 is aligned with the second latching lever 523; when the combination switch 14 rotates to connect the power supply circuit of the housing 1, the avoiding groove 5211 is staggered from the second locking rod 523. When the second latching lever 523 is moved to have one end abutting against the latching plate 521, the other end of the second latching lever 523 is beyond the housing 1 and positioned on the moving path of the front door 2, and the end of the second latching lever 523 beyond the housing 1 is used to abut against the front door 2 to restrict the movement of the nail 13 out of the door-closing groove 21.

The implementation principle of the mining explosion-proof and intrinsically safe permanent magnet type high-voltage vacuum power distribution device in the embodiment of the application is as follows: since the end of the sliding part 5131 is located on the moving path of the door rack 511 and the end of the second latching lever 523 is located on the moving path of the front door 2, the first latching lever 513 and the second latching lever 523 are moved to unlock the front door 2 before the front door 2 is opened.

When the front door 2 is opened, the screw 41 is rotated through the transmission shaft 43, and the screw 41 drives the circuit breaker 12 to move towards the front door 2, so that the circuit breaker 12 is separated from the fixed contact 11. In the moving process of the circuit breaker 12, the stopper 5151 is pressed against the first force-bearing end 5154 and drives the toggle member 5152 to rotate, the second force-bearing end 5155 drives the unlocking portion 5133 to move in the direction away from the front door 2, the sliding portion 5131 moves to be staggered with the door rack 511, and the reset member 514 compresses. Then, the power supply circuit to the housing 1 by rotating the combination switch 14 is opened so that the escape groove 5211 is aligned with the second latching lever 523, and the second latching lever 523 is rotated so that one end of the second latching lever 523 passes through the escape groove 5211 and the other end of the second latching lever 523 moves to be offset from the front door 2. The front door 2 is then slid upward to move the nail 13 out of the door closing groove 21, and finally the front door 2 is rotated to open the front door 2.

Through the structure, after the breaker 12 is separated from the fixed contact 11 and the power supply loop of the shell 1 is disconnected, the front door 2 can be moved by an operator, and the safety of the operator when the front door 2 is opened is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a mining flame proof and intrinsic safety type permanent magnetism high pressure vacuum distribution device, includes casing (1), sets up static contact (11) and the circuit breaker (12) of slip setting on casing (1) at casing (1), its characterized in that: the power supply device also comprises a front door (2), a hinge module (3) used for enabling the front door (2) to be rotatably connected to the shell (1), a driving module (4) used for driving the circuit breaker (12) to move, and a locking module (5) used for limiting the front door (2) to move when the power supply is switched on.

2. The mining flameproof and intrinsically safe permanent magnet high-voltage vacuum power distribution device according to claim 1, characterized in that: the hinge module (3) comprises a long shaft (32) arranged on the shell (1) and an upper hinge (33) sleeved on the long shaft (32) in a sliding mode, the upper hinge (33) is connected to the front door (2), the upper hinge (33) can rotate relative to the long shaft (32), a nail buckle (13) is arranged on the shell (1), a door closing groove (21) is formed in the front door (2) in the axial direction of the long shaft (32), and the end portion of the nail buckle (13) stretches into the door closing groove (21).

3. The mining flameproof and intrinsically safe permanent magnet high-voltage vacuum power distribution device of claim 2, characterized in that: the latching module (5) comprises a first latching mechanism (51), wherein the first latching mechanism (51) comprises a door rack (511) arranged on a front door (2), a first latching rod (513) arranged on the shell (1) in a sliding mode, a reset piece (514) connected to the latching rod and an unlocking component (515) used for driving the first latching rod (513) to move towards the direction far away from the front door (2), the circuit breaker (12) is in linkage connection with the first latching rod (513) through the unlocking component (515), the reset piece (514) is used for driving the first latching rod (513) to move towards the direction close to the front door (2), and the first latching rod (513) is used for abutting against the door rack (511) and limiting a nail buckle (13) from moving out of a door closing groove (21).

4. The mining flameproof and intrinsically safe permanent magnet high-voltage vacuum power distribution device of claim 3, characterized in that: the unlocking assembly (515) comprises a poking piece (5152) hinged to the shell (1) and a stop block (5151) arranged on the circuit breaker (12), wherein a first stress end (5154) and a second stress end (5155) are arranged on the poking piece (5152), the hinged position of the poking piece (5152) is located between the first stress end (5154) and the second stress end (5155), the first stress end (5154) is used for being abutted against the stop block (5151), the first locking rod (513) comprises an unlocking portion (5133), and the second stress end (5155) is used for being abutted against the side wall, close to the front door (2), of the unlocking portion (5133).

5. The mining flameproof and intrinsically safe permanent magnet high-voltage vacuum power distribution device according to claim 4, characterized in that: the unlocking assembly (515) further comprises an unlocking shaft (5153) with one end connected to the poking piece (5152), the other end of the unlocking shaft (5153) penetrates out of the shell (1), and the unlocking shaft (5153) is rotatably arranged on the shell (1).

6. The mining flameproof and intrinsically safe permanent magnet high-voltage vacuum power distribution device according to claim 4, characterized in that: the first locking mechanism (51) further comprises a reset component (516), and the reset component (516) is used for driving the second force bearing end (5155) to rotate in the direction away from the front door (2).

7. The mining flameproof and intrinsically safe permanent magnet high-voltage vacuum power distribution device according to claim 1, characterized in that: a combined switch (14) for controlling the on-off of a power supply loop of the shell (1) is rotatably connected on the shell (1), the locking module (5) further comprises a second locking mechanism (52), the second locking mechanism (52) comprises a second locking rod (523) which is arranged on the shell (1) in a sliding way and a locking plate (521) which is connected to the combination switch (14), the locking plate (521) is eccentrically provided with a yielding groove (5211) for the end part of the second locking rod (523) to extend into, when the combined switch (14) rotates until the power supply circuit of the shell (1) is broken, the receding groove (5211) is aligned with the second latching lever (523), and when one end of the second latching lever (523) collides with the latching plate (521), the other end of the second locking rod (523) exceeds the shell (1), and the second locking rod (523) is used for abutting against the front door (2) and limiting the movement of the nail buckle (13) out of the door closing groove (21).

8. The mining flameproof and intrinsically safe permanent magnet high-voltage vacuum power distribution device of claim 7, characterized in that: the shell (1) is provided with a locking seat (522), and the second locking rod (523) penetrates through and is in threaded connection with the locking seat (522).

9. The mining flameproof and intrinsically safe permanent magnet high-voltage vacuum power distribution device according to claim 1, characterized in that: the driving module (4) comprises a screw rod (41) rotatably connected to the shell (1) and a driving block (42) connected to the circuit breaker (12), and the screw rod (41) penetrates through and is in threaded connection with the driving block (42).

10. The mining flameproof and intrinsically safe permanent magnet high-voltage vacuum power distribution device of claim 9, characterized in that: the driving module (4) further comprises a transmission shaft (43) rotatably connected to the front door (2), the transmission shaft (43) is slidably arranged on the front door (2), and a transmission groove (411) for inserting the end part of the transmission shaft (43) is formed in the screw rod (41).

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