CN210429603U - Locking device of mining feed switch - Google Patents

Abstract

The utility model relates to a locking device of mining feed switch has the flame proof shell that is used for placing modular feed switch and sets up the main cavity qianmen at the flame proof shell front side, including scram tripping mechanism and the change over switch who is used for opening and close feed switch, scram tripping mechanism sets up between flame proof shell and main cavity qianmen, change over switch set up in the flame proof shell, the flame proof shell includes front bezel, back plate and curb plate, scram tripping mechanism set up in on the front bezel, scram tripping mechanism is including being used for opening and close change over switch open the subassembly and be used for the locating component that the subassembly was opened and close in the location, be provided with the through-hole on the front bezel, it corresponds to open and close the subassembly the one end of back bezel pass the through-hole with change over switch cooperatees. By adopting the technical scheme, the danger that the mine methane, coal dust and other explosions are ignited due to electrical faults caused by insufficient electrical clearance when the modular feed switch is separated from the main circuit is avoided, and the safety guarantee is provided for maintenance personnel.

Description

Locking device of mining feed switch

Technical Field

The utility model belongs to the technical field of the feed switch, especially, relate to a locking device of mining feed switch.

Background

The explosion-proof feed switch is widely applied to the coal mine underground and other environments containing explosive gas (methane mixture) in surrounding media, and is used as a main switch or a branch switch of power distribution in a neutral ungrounded three-phase power grid with 50Hz alternating current, 660V and 1140V voltage and multi-loop current of 2000A or below. However, due to the reasons that the working environment is complex, the ground is moist, electrical equipment is frequently started and the like, or when a breaker in a feeder switch is opened, the vacuum tube contact is adhered and punctured and other faults occur, the vacuum tube contact is frequently required to be maintained or overhauled, the feeder switch used at present adopts a door opening power-off mode, or the feeder switch is manually opened without a door, but whether the modular feeder switch is in a state of being completely separated from a main circuit in an explosion-proof and explosion-proof outer shell is difficult to determine, so that if an operator adopts the door opening power-off mode or the modular feeder switch is not completely separated from the main circuit, the door opening is carried out for overhauling and troubleshooting, great potential safety hazards are brought to coal mine safety production and personal.

The protection device of the existing feed switch, for example, a flame-proof device with an interlocking mechanism, which is disclosed by the applicant in 2016, 4, 06 and has a patent number of CN201510376928.4, has a flame-proof shell for placing a modular feed switch and a front door arranged on the front side of the flame-proof shell, and has an interlocking mechanism, wherein the interlocking mechanism comprises a switching device arranged in the flame-proof shell and used for switching on and off a modular feed switch control loop, a push-and-pull mechanism arranged on the front door and used for switching on and off connection between the modular feed switch and a main loop, and a locking mechanism used for limiting the front door to be opened, the switching device limits the movement of the push-and-pull mechanism, and the push-and-. The danger that the mine methane, coal dust and other explosions are ignited due to the fact that the circuit breaker in the modular feed switch is not enough to break away from the main circuit electrical gap is avoided, safety guarantee is provided for maintenance personnel, and the explosion-proof device has the advantages of being small in size, convenient to transport, carry, assemble, replace and the like.

However, the technical scheme has the disadvantages of complex operation, low working efficiency, complex internal structure, difficult troubleshooting of multiple fault points, inconvenient maintenance, complex replacement of components, incapability of maintaining by common personnel, delay of the working process in the mine and huge production loss due to the fact that professional technicians are required to maintain or return to the factory for maintenance. Therefore, it is necessary to consider how to further improve the safety of the system.

SUMMERY OF THE UTILITY MODEL

To sum up, for overcoming the not enough of prior art, the utility model provides a flame proof and safe type modular feeder switch of essence.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a mining feed switch's blocking device, has the flame proof shell that is used for placing modular feed switch and sets up the main cavity qianmen at the flame proof shell front side, including scram tripping mechanism and the change over switch who is used for opening and close feed switch, scram tripping mechanism sets up between flame proof shell and main cavity qianmen, change over switch set up in the flame proof shell, the flame proof shell includes front bezel, back plate and curb plate, scram tripping mechanism set up in on the front bezel, scram tripping mechanism is including the locating component that is used for opening and close change over switch and opening and close the subassembly with being used for the location to open and close the subassembly, be provided with the through-hole on the front bezel, it corresponds to open and close the subassembly the one end of back bezel pass the through-hole with.

By adopting the technical scheme, the feeder switch is placed in the flameproof shell and comprises a modular permanent magnet circuit breaker (hereinafter referred to as a modular circuit breaker) with the patent number of 201410377866.4 and a controller, a locking mechanism is arranged between the front door of the main cavity and the front plate, the danger of electrical accidents caused by manual withdrawal of the circuit breaker in the feeder switch under the working operation state is avoided, the emergency stop tripping mechanism adopts independent capacitor energy storage, the switching switch is driven by the opening and closing assembly to open and close the independent capacitor energy storage, and the emergency stop tripping can be reliably realized within 24 hours; the double sets of independent capacitors have no public point, one set of independent capacitors is used for one standby, and the safety tripping of the breaker is ensured; when the on-off component is linked with the change-over switch, a signal of the opening relay is switched on, the permanent magnet coil is conducted to discharge, and all capacitors are discharged before the door is opened; normal protection is carried out on closing, opening and characteristic parameters by another set of independent capacitor, and automatic discharge is carried out after power failure; the opening and closing assembly is positioned through the positioning assembly, the opening and closing assembly is ensured not to be switched randomly in different states, the stability is enhanced, and the use safety is enhanced.

The utility model discloses further set up: the opening and closing assembly comprises a mounting seat, a handle and a rotating shaft, the mounting seat is fixedly arranged on the position, corresponding to the change-over switch, of the front plate, a through hole matched with the rotating shaft is formed in the mounting seat, the rotating shaft corresponds to one end of the change-over switch, a groove used for opening and closing the change-over switch is formed in the end of the change-over switch, and the other end of the change-over switch penetrates through the through hole to be connected with the handle.

By adopting the technical scheme, the manual opening and closing switch is used in an on-site emergency state, if the breaker is not opened in power failure, the handle in front of the door is manually rotated, and the change-over switch in the small cavity is driven to be opened and closed through the rotating shaft, so that the condition that no power is supplied for manual opening and closing within 24 hours is ensured; the breaking capacity and speed are improved, the breaker can instantly realize the breaking capacity of 20KA, when the circuit loop needs to be cut off under the abnormal condition, the corresponding circuit loop can be conveniently and reliably cut off, and the breaker has a good using effect.

The utility model discloses further set up: be provided with the mounting bracket on the curb plate, the mounting bracket including be used for with the fixed plate that the curb plate is connected with be used for with the mounting panel that change over switch is connected, the mounting panel with the front bezel is parallel, the mounting panel is provided with the through-hole, change over switch set up in mounting panel rear end face, change over switch corresponds the one end of axis of rotation is provided with and is used for opening and close change over switch's turning block, the turning block passes the through-hole of mounting panel with the recess cooperatees.

Through adopting above-mentioned technical scheme, the mounting bracket is the L type, and the fixed plate is fixed with the curb plate, and change over switch fixes on the mounting panel, but fixed plate and mounting panel integrated into one piece compare with prior art, this mounting bracket simple to operate, simple structure, it is with low costs, change over switch's turning block sets up in the recess of axis of rotation, opens and close change over switch, easy operation through rotating the axis of rotation.

The utility model discloses further set up: the locating component comprises a fixing seat and a locating piece, wherein the fixing seat is arranged above the handle, the locating piece is arranged above the fixing seat, a sliding channel is arranged on the fixing seat and used for sliding the locating piece up and down, the sliding channel is matched with the locating piece, the locating piece is arranged relative to the other end of the fixing seat and provided with a pull ring, a first locating hole used for locating a power supply opening state and a second locating hole used for locating a power supply closing state are arranged on the handle, a included angle between the first locating hole and the second locating hole is equal to 180 degrees, and the first locating hole is matched with the second locating hole.

Through adopting above-mentioned technical scheme, the pulling pull ring of pulling makes the setting element lift and breaks away from the hand (hold), then rotate the hand (hold) and change control circuit's power state through change over switch, rotate the hand (hold) this moment and make first locating hole and setting element align, then release the pull ring again, the setting element is along with the automatic whereabouts of gravity, fix a position first locating hole, and rotate the hand (hold) and make second locating hole and setting element align, fix a position the second locating hole promptly, make rotary switch can not directly rotate through the setting element, and stability and safety are improved.

The utility model discloses further set up: the handle is further provided with a third positioning hole for positioning the power supply tripping state, the third positioning hole is formed between the first positioning hole and the positioning hole, and an included angle formed between the third positioning hole and the second positioning hole is 90 degrees.

By adopting the technical scheme, the handle is rotated to align the third positioning hole with the positioning piece, the power supply is in a separating brake tripping state at the moment, the electric chassis truck is firstly driven to disconnect the feed switch from the main circuit terminal group, then the on-off of the feed switch is controlled by the on-off assembly, and the on-off assembly is limited by the positioning assembly.

The utility model discloses further set up: the front plate with still be provided with the locking mechanical system who is used for locking main cavity qianmen between the main cavity qianmen, locking mechanical system including set up in mount on the front plate with set up in the main cavity qianmen corresponds the fastener of the one side of front plate, the fastener for the other end removal card of main cavity qianmen is located behind the mount.

Through adopting above-mentioned technical scheme, adopt fastener and the mount cooperation in the main cavity qianmen, behind the mount is located to the fastener other end card, can prevent that the main cavity qianmen from being bumped easily or untrained personnel's accident is opened, the reinforcing security.

The utility model discloses further set up: the fastener for the other end of main cavity qianmen is provided with card portion, be provided with on the mount and be used for the confession the draw-in groove that card portion passed, card portion with draw-in groove looks adaptation, locking mechanical system still includes be used for driving the main cavity qianmen to the linkage subassembly of hand (hold) direction translation, the linkage subassembly is through driving the main cavity qianmen makes card portion card is located behind the mount.

Through adopting above-mentioned technical scheme, operation linkage assembly makes the main cavity qianmen to hand (hold) direction translation, the card portion on the main cavity qianmen aims at the draw-in groove, thereby then the rethread linkage assembly makes card portion pass the draw-in groove and open the main cavity qianmen, the main cavity qianmen need earlier to hand (hold) direction translation rotates again and just can open, if not preceding translation main cavity qianmen, card portion does not align with the draw-in groove, behind the mount is located to the card, the main cavity qianmen can't be opened, simple structure, but structural stability is strong.

The utility model discloses further set up: the clamping piece comprises an upper clamping piece and a lower clamping piece, the upper clamping piece and the lower clamping piece are symmetrically arranged at the upper end and the lower end of the front door of the main cavity, the clamping groove comprises an upper clamping groove and a lower clamping groove, and the clamping piece is symmetrically arranged at the upper end and the lower end of the fixing frame.

Through adopting above-mentioned technical scheme, compare in prior art and only be provided with latch and spring bolt in one end, be provided with fastener and draw-in groove respectively from top to bottom, both symmetries set up, have strengthened the stability of structure, duplicate protection prevents that the fastener of one end from taking place not hard up scheduling problem, still can lock the main cavity qianmen, ensures that the main cavity qianmen earlier to the hand (hold) direction translation just can be opened.

The utility model discloses further set up: the handle is provided with a fan-shaped clamping part for blocking the front door of the main cavity from translating, and the radius of the clamping part is matched with the distance between the handle and the front door of the main cavity.

Through adopting above-mentioned technical scheme, because main cavity qianmen need just can open to hand (hold) direction translation earlier, and be provided with fan-shaped card portion on the hand (hold), the main cavity qianmen can not be to hand (hold) direction translation, so can't open, need rotate the handle earlier (accomplish the disconnection of feed switch control power), make fan-shaped card portion no longer between handle and main cavity qianmen along with the handle rotation, then just can open the main cavity qianmen, increase safety protection, adopt the electrical protection more than quadruple fully to guarantee to be located the modular feed switch in the flame proof shell under the state that breaks away from the main circuit completely, just can open flame proof shell door, avoided producing the danger of explosion such as electrical failure mine methane, coal dust because of the circuit breaker among the modular feed switch breaks away from main circuit electrical gap inadequately, provide the safety guarantee to maintenance personal.

The following describes embodiments of the present invention with reference to the drawings and examples.

Drawings

Fig. 1 is a top view of an embodiment of the present invention;

fig. 2 is a structural diagram of the emergency stop tripping mechanism and the change-over switch according to the embodiment of the present invention;

FIG. 3 is a first block diagram of a locking mechanism according to an embodiment of the present invention;

FIG. 4 is a second structural view of the locking mechanism according to the embodiment of the present invention;

fig. 5 is a front view of a partial structure of a power supply start state according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of the scram trip mechanism and the transfer switch according to the embodiment of the present invention;

reference numerals: 1. the explosion-proof shell comprises an explosion-proof shell, 11 parts of a front plate, 12 parts of a rear plate, 13 parts of side plates, 6 parts of a front door of a main cavity, 71 parts of an emergency stop tripping mechanism, 711 parts of an opening and closing assembly, 7111 parts of a mounting seat, 7112 parts of a handle, 71121 parts of a first positioning hole, 71122 parts of a second positioning hole, 71123 parts of a third positioning hole, 71124 parts of a fan-shaped clamping part, 7113 parts of a rotating shaft, 71131 parts of a groove, 712 parts of a positioning assembly, 7121 parts of a fixing seat, 7122 parts of a positioning piece, 71221 parts of a pull ring, 72 parts of a change-over switch, 721 parts of a rotating block, 73 parts of a locking mechanism, 731 parts of a fixing frame, 7311 parts of a clamping groove, 73111 parts of an upper clamping groove, 73112 parts of a lower clamping groove, 732 parts of a clamping part, 7321 parts of an upper clamping part.

Detailed Description

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Referring to fig. 1-6, the locking device for the mining feeder switch disclosed in this embodiment has a flameproof housing 1 for placing a modular feeder switch and a front door 6 of a main cavity arranged at the front side of the flameproof housing 1, and includes an emergency stop tripping mechanism 71 and a switch 72 for opening and closing the feeder switch, the emergency stop tripping mechanism 71 is arranged between the flameproof housing 1 and the front door 6 of the main cavity, the change-over switch 72 is arranged in the flameproof housing 1, the flameproof housing 1 comprises a front plate 11, a rear plate 12 and a side plate 13, the emergency stop tripping mechanism 71 is arranged on the front plate 11, the scram release mechanism 71 comprises an opening and closing component 711 for opening and closing the transfer switch 72 and a positioning component 712 for positioning the opening and closing component 711, a through hole is formed in the front plate 11, and one end of the opening and closing component 711 corresponding to the rear plate 12 penetrates through the through hole to be matched with the change-over switch 72.

The embodiment further provides that: the opening and closing assembly 711 comprises a mounting seat 7111, a handle 7112 and a rotating shaft 7113, wherein the mounting seat 7111 is fixedly arranged at the position, corresponding to the change-over switch 72, of the front plate 11, a through hole matched with the rotating shaft 7113 is formed in the mounting seat 7111, one end, corresponding to the change-over switch 72, of the rotating shaft 7113 is provided with a groove 71131 for opening and closing the change-over switch 72, and the other end of the rotating shaft 7113 penetrates through the through hole to be connected with the handle 7112.

The embodiment further provides that: be provided with mounting bracket 8 on curb plate 13, mounting bracket 8 including be used for with fixed plate 81 that curb plate 13 is connected with be used for with mounting panel 82 that change over switch 72 is connected, mounting panel 82 with front bezel 11 parallels, mounting panel 82 is provided with the through-hole, change over switch 72 set up in mounting panel 82 rear end face, change over switch 72 corresponds the one end of axis of rotation 7113 is provided with and is used for opening and close change over switch 72's turning block 721, turning block 721 passes mounting panel 82's through-hole with the recess 71131 cooperatees.

The embodiment further provides that: positioning element 712 including set up in the fixing base 7121 of hand (hold) 7112 top with set up in the setting element 7122 of fixing base 7121 top, be provided with the confession on the fixing base 7121 setting element 7122 upper and lower gliding slide channel, slide channel with setting element 7122 looks adaptation, setting element 7122 for the other end of fixing base 7121 is provided with pull ring 71221, be provided with the first locating hole 71121 that is used for fixing a position the power on-state on the hand (hold) 7112 and be used for fixing a position the second locating hole 71122 of power off-state, first locating hole 71121 with contained angle between the second locating hole 71122 equals 180 degrees, first locating hole 71121 second locating hole 71122 with setting element 7122 looks adaptation.

The embodiment further provides that: the handle 7112 is further provided with a third positioning hole 71123 for positioning a power supply switching-off tripping state, the third positioning hole 71123 is arranged between the first positioning hole 71121 and the positioning hole, and an included angle between the third positioning hole 71123 and the second positioning hole 71122 is 90 degrees.

The embodiment further provides that: the locking device 7 further comprises a locking mechanism 73 for locking the front door 6 of the main cavity, the locking mechanism 73 comprises a fixing frame 731 arranged on the front plate 11 and a clip 732 arranged on one surface of the front door 6 of the main cavity corresponding to the front plate 11, and the clip 732 is movably clipped behind the fixing frame 731 relative to the other end of the front door 6 of the main cavity.

The embodiment further provides that: the clip 732 is provided with a clip portion 7321 at the other end of the front door 6 of the main cavity, the fixing frame 731 is provided with a slot 7311 for the clip portion 7321 to pass through, the clip portion 7321 is matched with the slot 7311, the locking mechanism 73 further includes a linkage assembly 9 for driving the front door 6 of the main cavity to translate towards the handle 7112, and the linkage assembly 9 drives the front door 6 of the main cavity to clamp the clip portion 7321 behind the fixing frame 731.

The embodiment further provides that: the clips 732 comprise an upper clip 7322 and a lower clip 7323, which are symmetrically arranged at the upper and lower ends of the front door 6 of the main cavity, and the slots 7311 comprise an upper slot 73111 and a lower slot 73112, which are symmetrically arranged at the upper and lower ends of the fixing frame 731.

The embodiment further provides that: the handle 7112 is provided with a fan-shaped clamping portion 71124 for blocking the translation of the front cavity door 6, and the radius of the clamping portion 7321 is matched with the distance between the handle 7112 and the front cavity door 6.

The above-mentioned "between" does not only mean between orientations and positions, but also means between the interactions of different parts. The left and right sides are viewed from the front of the main cavity of the feeder switch.

Although the terms of the flameproof housing 1, the front plate 11, the rear plate 12, the side plates 13, the flameproof partition 14, the flameproof housing 15, the wiring cavity 16, the feed switch 3, the main circuit terminal group 4, the electric chassis 5, the main cavity front door 6, the locking device 7, the emergency stop tripping mechanism 71, the opening and closing assembly 711, the mounting seat 7111, the handle 7112, the first positioning hole 71121, the second positioning hole 71122, the third positioning hole 71123, the fan-shaped clamping part 71124, the rotating shaft 7113, the groove 71131, the positioning assembly 712, the fixing seat 7121, the positioning part 7122, the pull ring 71221, the change-over switch 72, the rotating block 721, the locking mechanism 73, the fixing frame 731, the clamping groove 11, the upper clamping groove 73111, the lower clamping groove 73112, the clamping piece 732, the clamping part 7321, the upper clamping piece 7322, the lower clamping piece 7323, the mounting frame 8, the fixing plate 81, the mounting plate 82, the linkage assembly 9 and the like are used. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (9)

1. The utility model provides a mining feed switch's blocking device, has the flame proof shell that is used for placing modular feed switch and sets up the main cavity qianmen in flame proof shell front side which characterized in that: the emergency stop tripping device comprises an emergency stop tripping mechanism and a change-over switch used for opening and closing a feed switch, wherein the emergency stop tripping mechanism is arranged between an explosion-proof shell and a front door of a main cavity, the change-over switch is arranged in the explosion-proof shell, the explosion-proof shell comprises a front plate, a rear plate and a side plate, the emergency stop tripping mechanism is arranged on the front plate, the emergency stop tripping mechanism comprises an opening and closing assembly used for opening and closing the change-over switch and a positioning assembly used for positioning the opening and closing assembly, a through hole is formed in the front plate, and one end of the rear plate, corresponding to the opening and closing assembly, penetrates through the through hole.

2. The locking device of the mining feed switch according to claim 1, characterized in that: open and close the subassembly and include mount pad, hand (hold) and axis of rotation, the mount pad fixed set up in the front bezel corresponds on change over switch's the position, be provided with on the mount pad with the three holes that lead to of axis of rotation looks adaptation, the axis of rotation corresponds change over switch's one end is provided with and is used for opening and close change over switch's recess, the other end pass the through-hole with the hand (hold) is connected.

3. The locking device for the mining feed switch according to claim 2, characterized in that: be provided with the mounting bracket on the curb plate, the mounting bracket including be used for with the fixed plate that the curb plate is connected with be used for with the mounting panel that change over switch is connected, the mounting panel with the front bezel is parallel, the mounting panel is provided with the through-hole, change over switch set up in mounting panel rear end face, change over switch corresponds the one end of axis of rotation is provided with and is used for opening and close change over switch's turning block, the turning block passes the through-hole of mounting panel with the recess cooperatees.

4. The locking device for the mining feed switch according to claim 2, characterized in that: the locating component comprises a fixing seat and a locating piece, wherein the fixing seat is arranged above the handle, the locating piece is arranged above the fixing seat, a sliding channel is arranged on the fixing seat and used for sliding the locating piece up and down, the sliding channel is matched with the locating piece, the locating piece is arranged relative to the other end of the fixing seat and provided with a pull ring, a first locating hole used for locating a power supply opening state and a second locating hole used for locating a power supply closing state are arranged on the handle, a included angle between the first locating hole and the second locating hole is equal to 180 degrees, and the first locating hole is matched with the second locating hole.

5. The locking device of the mining feed switch according to claim 4, characterized in that: the handle is further provided with a third positioning hole for positioning the power supply tripping state, the third positioning hole is formed between the first positioning hole and the positioning hole, and an included angle formed between the third positioning hole and the second positioning hole is 90 degrees.

6. The locking device for the mining feed switch according to claim 2, characterized in that: the front plate with still be provided with the locking mechanical system who is used for locking main cavity qianmen between the main cavity qianmen, locking mechanical system including set up in mount on the front plate with set up in the main cavity qianmen corresponds the fastener of the one side of front plate, the fastener for the other end removal card of main cavity qianmen is located behind the mount.

7. The locking device for the mining feed switch according to claim 6, characterized in that: the fastener for the other end of main cavity qianmen is provided with card portion, be provided with on the mount and be used for the confession the draw-in groove that card portion passed, card portion with draw-in groove looks adaptation, locking mechanical system is still including being used for driving the main cavity qianmen to the linkage subassembly of hand (hold) direction translation, the linkage subassembly is through driving the main cavity qianmen makes card portion card is located behind the mount.

8. The locking device for the mining feed switch according to claim 7, characterized in that: the clamping piece comprises an upper clamping piece and a lower clamping piece, the upper clamping piece and the lower clamping piece are symmetrically arranged at the upper end and the lower end of the front door of the main cavity, the clamping groove comprises an upper clamping groove and a lower clamping groove, and the clamping piece is symmetrically arranged at the upper end and the lower end of the fixing frame.

9. The locking device for the mining feed switch according to claim 7, characterized in that: the handle is provided with a fan-shaped clamping part for blocking the front door of the main cavity from translating, and the radius of the clamping part is matched with the distance between the handle and the front door of the main cavity.

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