Mining permanent magnet vacuum feed switch

Abstract

The utility model discloses a mining permanent magnet vacuum feed switch, and belongs to the technical field of safety switches, the mining permanent magnet vacuum feed switch comprises a box body assembly, the box body assembly comprises a mounting bottom plate and a vertically arranged guide rod, and a motor is used for driving a screw rod to rotate so as to drive a lifting plate to lift along the guide rod; the manual driving assembly is used for manually controlling the lifting plate to lift; the interlocking mechanism is arranged between the box body assembly and the front door assembly, the interlocking mechanism is used for locking the front door assembly after the lifting plate drives the circuit breaker assembly to ascend to a preset position, and the interlocking mechanism is also used for unlocking the front door assembly after the lifting plate drives the circuit breaker assembly to descend to the preset position. The motor drives the lifter to drive the lifting plate and the circuit breaker assembly to lift, or the manual driving assembly drives the lifter to drive the lifting plate to lift, and the interlocking mechanism conveniently locks the front door assembly after the circuit breaker assembly is lifted to a preset position, so that the overall safety of the switch is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety switch, in particular, relates to a mine-used permanent-magnetic vacuum feeder switch. BACKGROUND

[0002] The information provided in this section is for the purpose of generally presenting the context of the application. The work of the presently named inventors, to the extent the descriptions are described in this section, as well as aspects of the descriptions that can not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present application.

[0003] In the field of coal electrical equipment, the connection of main circuit of explosion-proof switch such as vacuum feeder switch and vacuum electromagnetic starter mainly adopts direct connection of wires, that is, the wires and original devices are bolted and crimped together, when maintenance or maintenance is needed, the whole connection needs to be removed, and the machine core can be taken out from the shell of the explosion-proof switch, which has the problems of inconvenient disassembly, low operation efficiency and the like. For example, a mine-used explosion-proof permanent-magnetic vacuum feeder switch disclosed in Chinese patent No. CN108389755A comprises a plug-in main circuit connection assembly socket and a machine core connection assembly plug arranged in the explosion-proof switch shell, the socket is arranged in the explosion-proof switch shell, the plug is arranged on the other side corresponding to the plug-in of the socket, when the plug is inserted into the socket, the switch machine core is in communication with the main circuit, and the switch is in the closed state. The explosion-proof switch further comprises a lifting device and an interlocking device, the main circuit of the mine-used explosion-proof permanent-magnetic vacuum feeder switch adopts an up-down plug-in structure, the lifting device is controlled by a handle outside the shell to perform up-down plug-in operation, which is simple and labor-saving, and ensures the personal safety of the operator.

[0004] However, the existing permanent-magnetic vacuum feeder switch has the problems that the locking operation of the feeder switch front door assembly cannot be conveniently realized, the lifting device structure is relatively complex, the manufacturing and maintenance costs are high, and the function switching of electric or manual control lifting cannot be quickly realized, and the use is not flexible and convenient, so further improvement and optimization of structure optimization and improvement of operation convenience are needed.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those skilled in the art. SUMMARY

[0006] In view of at least one of the above technical problems, the present application provides a mine-used permanent-magnetic vacuum feeder switch, which can drive a lifting plate and a circuit breaker assembly to lift by a motor-driven lifting machine, or drive the lifting plate to lift by a manually-driven assembly, and cut off the power supply of the motor during the driving process of the manually-driven assembly, so as to realize the lifting function in an electric or manual mode, and lock the front door assembly on the circuit breaker assembly after the assembly is lifted to a preset position by the interlocking mechanism, so that the overall operation is very efficient and convenient, and the safety of the switch as a whole is improved.

[0007] According to an aspect of the present application, a mine-used permanent-magnetic vacuum feeder switch is provided, which comprises a box assembly, a circuit breaker assembly and a terminal box assembly arranged in the box assembly, a front door assembly arranged at the front of the box assembly, and further comprises a lifting plate assembly, a lifting machine, a manually-driven assembly and a motor.

[0008] The box assembly comprises a mounting bottom plate and a vertically arranged guide rod, the lifting machine is arranged on the mounting bottom plate, the lifting plate assembly comprises a lifting plate sleeved on the guide rod, the circuit breaker assembly is mounted on the lifting plate, the output end of the lifting machine is connected with the lifting plate and used to drive the lifting plate to move up and down along the guide rod, and the output shaft of the motor is connected with the first input end of the lifting machine.

[0009] The manually-driven assembly comprises a driving shaft, a connecting piece and a power-off stroke switch, the first end of the connecting piece is connected with the second input end of the lifting machine, the driving shaft is slidably arranged on the mounting bottom plate, the driving shaft is used to slide towards the connecting piece and be clamped with the second end of the connecting piece, or slide away from the connecting piece and be disengaged from the connecting piece, the driving shaft is further used to drive the connecting piece to rotate after the clamping, the power-off stroke switch is used to be triggered and cut off the power supply of the motor during the sliding process of the driving shaft towards the connecting piece, and the power-off stroke switch is further used to be disengaged from the driving shaft and turn on the power supply of the motor when the driving shaft slides away from the connecting piece.

[0010] In some embodiments of the present application, the mine-used permanent-magnetic vacuum feeder switch further comprises an interlocking mechanism arranged between the box assembly and the front door assembly, the interlocking mechanism is used to lock the front door assembly after the lifting plate drives the circuit breaker assembly to lift to a preset position, and the interlocking mechanism is further used to unlock the front door assembly after the lifting plate drives the circuit breaker assembly to descend to the preset position.

[0011] In some embodiments of the present application, the interlocking mechanism comprises a locking assembly, the locking assembly comprises a yoke handle, a yoke rod and a locking rod, the locking rod is slidably arranged on the box assembly and is arranged perpendicular to the front door assembly in a horizontal direction, a first end of the locking rod is used for being clamped with a limiting hole on the front door assembly to lock the front door assembly; the yoke rod is rotatably arranged on the box assembly and is arranged perpendicular to the locking rod, a third groove is formed on a side wall of the yoke rod, the yoke handle is arranged on the yoke rod, the yoke handle is used to drive the yoke rod to rotate to align the third groove with the locking rod, so that the second end of the locking rod is slid into the third groove to make the first end of the locking rod disengage from the limiting hole of the front door assembly.

[0012] In some embodiments of the present application, the locking assembly further comprises a mounting frame and a yoke mounting cylinder, the mounting frame is arranged on the box assembly, the locking rod is arranged on the mounting frame and is connected with a micro motor prearranged in the mounting frame, the yoke mounting cylinder is arranged on the box assembly and is arranged perpendicular to the connecting line of the mounting frame, and the yoke rod is rotatably arranged in the yoke mounting cylinder.

[0013] In some embodiments of the present application, the manual driving assembly further comprises a power-off baffle, the power-off baffle is arranged on the driving shaft and is used to trigger a power-off stroke switch when the driving shaft slides to the connecting piece.

[0014] In some embodiments of the present application, a first groove is formed on the driving shaft, the manually or electrically driven lifting device further comprises a clamping assembly and a limiting assembly, the clamping assembly is rotatably arranged on the box assembly and is used to clamp into the first groove to limit the sliding of the driving shaft, and the limiting assembly is arranged on the box assembly and is used to abut against the clamping assembly and limit the rotation of the clamping assembly when the clamping assembly clamps into the first groove.

[0015] In some embodiments of the present application, the clamping assembly comprises a clamping piece and a support shaft, the support shaft is horizontally arranged on a support plate prearranged on the box assembly, the clamping piece is rotatably sleeved on the support shaft, a first end of the clamping piece is provided with a clamping portion, the clamping portion is used to clamp into the first groove, and avoiding grooves are formed on both sides of the clamping portion and are used to avoid the interference between the clamping piece and the driving shaft when the clamping portion disengages from the first groove.

[0016] In some embodiments of the present application, a clamping groove is formed on a second end of the clamping piece, the limiting assembly comprises a mounting cylinder and a sliding piece, the mounting cylinder is arranged on a connecting rod prearranged on the box assembly, and the sliding piece is slidably arranged in the mounting cylinder, the sliding piece is used to extend out of the mounting cylinder to clamp into the clamping groove to limit the rotation of the clamping piece.

[0017] In some embodiments of the present application, a limiting portion is arranged on the sliding member, a second groove is arranged on the limiting portion, the limiting portion is used for clamping into the clamping groove, and the second groove is used for being arranged correspondingly with the clamping groove after the limiting portion slides into the mounting cylinder to avoid interference of the sliding member with rotation of the clamping member.

[0018] In some embodiments of the present application, the box assembly further comprises a first mounting plate and a second mounting plate fixed in sequence from top to bottom, the first mounting plate and the second mounting plate are arranged on the side plate of the box assembly, the guide rod is vertically arranged between the first mounting plate and the second mounting plate, an upper travel switch is arranged on the first mounting plate, and a lower travel switch is arranged on the second mounting plate, the upper travel switch and the lower travel switch are respectively used for monitoring the travel of the lifting plate in lifting and lowering.

[0019] The present application has the following beneficial effects:

[0020] The mine-used permanent-magnetic vacuum feeder switch adopts the first bevel gear pair to connect the motor and the screw rod of the elevator, the starting motor can drive the screw rod to rotate, and then drives the lifting plate to lift along the guide rod. When it is needed to switch to manually control the lifting of the lifting plate, the driving shaft is only needed to be pushed to be connected with the connecting piece. Since the connecting piece is connected with the screw rod through the second bevel gear pair, the driving shaft can be manually rotated to drive the connecting piece and the screw rod to synchronously rotate, the lifting of the lifting plate can also be finely controlled, the power-off travel switch can be triggered by the driving shaft in the process of pushing the driving shaft to slide to the connecting piece, the power supply of the motor is disconnected, no additional power-off operation is needed, the switching process is very fast and efficient, and the overall work efficiency is improved.

[0021] Meanwhile, in the process that the lifting plate drives the circuit breaker assembly to lift, the interlocking mechanism is used to lock the front door assembly when the lifting plate drives the circuit breaker assembly to lift to the preset position, and the interlocking mechanism is also used to release the locking of the front door assembly when the lifting plate drives the circuit breaker assembly to lower to the preset position, the protection measure that the feeder switch front door assembly can be closed only for closing operation is realized, and the stable locking of the feeder switch front door assembly in the working state is ensured.

[0022] Of course, it is not necessary for any product implementing the present application to achieve all the advantages described above. In addition to the objects, features, and advantages described above, the present application has other objects, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The accompanying drawings should not be construed in a limiting manner. In the drawings:

[0024] Figure 1 is a schematic diagram of the overall structure of the preferred embodiment of the present application;

[0025] Figure 2 is a schematic diagram of the structure of the clamping assembly of the preferred embodiment of the present application;

[0026] Figure 3 is a schematic diagram of the structure of the manual driving assembly of the preferred embodiment of the present application;

[0027] Figure 4 is a schematic diagram of the installation of the guide rod of the preferred embodiment of the present application;

[0028] Figure 5 is a schematic diagram of the structure of the clamping locking assembly of the preferred embodiment of the present application;

[0029] Figure 6 is a schematic diagram of the structure of the locking assembly of the preferred embodiment of the present application;

[0030] Figure 7 is a schematic diagram of the structure of the quick insertion assembly of the preferred embodiment of the present application;

[0031] Figure 8 is a schematic diagram of the connection of the multiple mine-used explosion-proof and intrinsically safe permanent-magnetic vacuum feeder switch connection table of the preferred embodiment of the present application;

[0032] Figure 9 is a schematic diagram of the connection of the connection table wiring post assembly of the preferred embodiment of the present application;

[0033] Legend: 100, box assembly; 101, mounting bottom plate; 102, first mounting plate; 103, guide rod; 104, second mounting plate; 105, upper travel switch; 106, lower travel switch; 200, lifting plate assembly; 201, lifting plate; 202, guide rail; 203, sliding plate; 300, circuit breaker assembly; 400, quick plug assembly; 401, quick plug flange; 500, front door assembly; 600, terminal box assembly; 700, interlocking terminal post assembly; 1, elevator; 11, screw rod; 2, manual drive assembly; 21, drive shaft; 211, first groove; 22, connecting piece; 221, connecting sleeve; 23, mounting sleeve; 24, hand wheel; 25, power-off baffle; 26, power-off travel switch; 3, motor; 4, clamping assembly; 41, clamping piece; 411, clamping portion; 412, avoiding groove; 413, clamping groove; 414, limiting groove; 42, supporting shaft; 43, limiting rod; 5, limiting assembly; 51, mounting cylinder; 52, sliding piece; 521, second groove; 522, limiting portion; 6, locking assembly; 61, mounting frame; 62, pull fork handle; 63, pull fork rod; 631, third groove; 64, pull fork mounting cylinder; 65, locking rod; 7, clamping locking assembly; 71, locking hook plate; 711, connecting portion; 712, locking hook portion; 72, door locking rod. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered by the following.

[0035] Figure 1 is a schematic diagram of the overall structure of the preferred embodiment of the present application; Figure 2 is a schematic diagram of the clamping assembly of the preferred embodiment of the present application; Figure 3 is a schematic diagram of the manual drive assembly of the preferred embodiment of the present application; Figure 4 is a schematic diagram of the installation of the guide rod of the preferred embodiment of the present application; Figure 5 is a schematic diagram of the clamping locking assembly of the preferred embodiment of the present application; Figure 6 is a schematic diagram of the locking assembly of the preferred embodiment of the present application; Figure 7 is a schematic diagram of the quick plug assembly of the preferred embodiment of the present application; Figure 8 is a schematic diagram of the interlocking of multiple mine explosion-proof and intrinsically safe permanent magnet vacuum feeder switches of the preferred embodiment of the present application; Figure 9 is a schematic diagram of the connection of the interlocking terminal post assembly of the preferred embodiment of the present application.

[0036] The application discloses a mine-used permanent-magnetic vacuum feeder switch, which comprises a box assembly 100, a circuit breaker assembly 300 and a terminal box assembly 600 arranged in the box assembly 100, a front door assembly 500 arranged at the front part of the box assembly 100, and a mine-used explosion-proof and intrinsically safe permanent-magnetic vacuum feeder switch further comprising a lifting plate assembly 200, a lifting machine 1, a manual driving assembly 2 and a motor 3.

[0037] The box assembly 100 comprises a mounting bottom plate 101 and a vertical guide rod 103, the lifting machine 1 is arranged on the mounting bottom plate 101, the lifting plate assembly 200 comprises a lifting plate 201 sleeved on the guide rod 103, the circuit breaker assembly 300 is arranged on the lifting plate 201, the output end of the lifting machine 1 is connected with the lifting plate 201 and used for driving the lifting plate 201 to move up and down along the guide rod 103, and the output shaft of the motor 3 is connected with the first input end of the lifting machine 1.

[0038] The manual driving assembly 2 comprises a driving shaft 21, a connecting piece 22 and a power-off stroke switch 26, the first end of the connecting piece 22 is connected with the second input end of the lifting machine 1, the driving shaft 21 is slidably arranged on the mounting bottom plate 101, the driving shaft 21 is used for being slid towards the connecting piece 22 and being clamped with the second end of the connecting piece 22 or being slid away from the connecting piece 22 and being disengaged from the connecting piece 22, the driving shaft 21 is further used for driving the connecting piece 22 to rotate after being clamped with the connecting piece 22, and the power-off stroke switch 26 is used for being triggered and disconnecting the power supply of the motor 3 in the process that the driving shaft 21 slides towards the connecting piece 22, and the power-off stroke switch 26 is further used for being disengaged from the driving shaft 21 and connecting the power supply of the motor 3 when the driving shaft 21 slides away from the connecting piece 22.

[0039] Here, the meaning of the lifting machine 1 refers to a mechanism for providing a lifting driving power source, which comprises a base, a screw rod 11 rotatably arranged on the base, and the screw rod 11 is vertically arranged to drive the lifting plate 201 to move up and down along the guide rod 103 through the screw rod 11. In some embodiments, the output shaft of the motor 3 is connected with the screw rod 11 through a first bevel gear pair, and the first end of the connecting piece 22 is connected with the screw rod 11 through a second bevel gear pair.

[0040] Here, the meaning of the connecting piece 22 refers to a structure connected with the screw rod 11 through the second bevel gear pair. In some embodiments, the connecting piece 22 is an axle part, and the connecting piece 22 is rotatably arranged on the side wall of the lifting machine 1.

[0041] Preferably, the mine-used permanent-magnetic vacuum feeder switch further comprises an interlocking mechanism arranged between the box assembly 100 and the front door assembly 500, the interlocking mechanism being used to lock the front door assembly 500 after the lifting plate 201 drives the circuit breaker assembly 300 to rise to a preset position, and the interlocking mechanism being further used to unlock the front door assembly 500 after the lifting plate 201 drives the circuit breaker assembly 300 to descend to the preset position.

[0042] In some embodiments, the lifting plate 201 is provided with a guide rail 202, and the circuit breaker assembly 300 is installed in the sliding plug-in mode by cooperating with the guide rail 202 through a sliding plate 203, thereby greatly improving the dismounting speed.

[0043] It should be noted that when the motor 3 drives the lifting plate 201 to carry the circuit breaker assembly 300 to rise and fall, the control of the connection and separation of the isolated static contact of the circuit breaker assembly 300 and the feeder switch can be remotely controlled by a computer, so that the isolation break can be formed on site without personnel, the high-voltage main circuit is disconnected, and the unattended operation of the underground substation is truly realized.

[0044] In the application, the motor 3 and the screw rod 11 of the elevator 1 are connected through the first bevel gear pair, the motor 3 can drive the screw rod 11 to rotate, and then drive the lifting plate 201 to rise and fall along the guide rod 103. When it is needed to switch to manually control the lifting plate 201 to rise and fall, the driving shaft 21 is only needed to be connected with the connecting piece 22, since the connecting piece 22 is connected with the screw rod 11 through the second bevel gear pair, the driving shaft 21 can be manually rotated to drive the connecting piece 22 and the screw rod 11 to synchronously rotate, the lifting plate 201 can also be finely controlled to rise and fall, and in the process of pushing the driving shaft 21 to slide to the connecting piece 22, the driving shaft 21 can trigger the power-off travel switch 26 to realize the operation of disconnecting the power supply of the motor 3, without additional power-off operation, and the switching process is very fast and efficient.

[0045] Meanwhile, in the process of driving the circuit breaker assembly 300 to rise and fall by the lifting plate 201, the interlocking mechanism is used to lock the front door assembly 500 after the lifting plate 201 drives the circuit breaker assembly 300 to rise to a preset position, and the interlocking mechanism is further used to unlock the front door assembly 500 after the lifting plate 201 drives the circuit breaker assembly 300 to descend to the preset position, thereby realizing the protection measure that the closing operation can be performed only after the front door assembly 500 of the feeder switch is locked, and ensuring the stable locking of the front door assembly 500 of the feeder switch in the working state.

[0046] Preferably, please refer to Figure 5 , 6As shown, the interlocking mechanism comprises a locking assembly 6, which comprises a yoke handle 62, a yoke rod 63 and a locking rod 65. The locking rod 65 is slidably arranged on the box assembly 100 and is arranged perpendicularly to the front door assembly 500 in a horizontal direction. A first end of the locking rod 65 is used to be clamped with a limiting hole on the front door assembly 500 to lock the front door assembly 500. The yoke rod 63 is rotatably arranged on the box assembly 100 and is arranged perpendicularly to the locking rod 65. A third groove 631 is formed on a side wall of the yoke rod 63. The yoke handle 62 is arranged on the yoke rod 63 and is used to drive the yoke rod 63 to rotate so that the third groove 631 is aligned with the second end of the locking rod 65, and then the second end of the locking rod 65 is slid into the third groove 631 to make the first end of the locking rod 65 disengage from the limiting hole of the front door assembly 500.

[0047] It can be understood that the front door assembly 500 is locked by clamping the first end of the locking rod 65 with the front door assembly 500. When it is needed to open the front door assembly 500, the yoke handle 62 is used to rotate the yoke rod 63 so that the third groove 631 of the yoke rod 63 is aligned with the second end of the locking rod 65, and then the locking rod 65 is slid into the third groove 631 to make the locking rod 65 disengage from the front door assembly 500. At this time, the front door assembly 500 can be opened. The locking rod 65 can stably lock the front door assembly 500, and the overall structure of the locking assembly 6 is very simple, the manufacturing cost is low, and the maintenance is convenient.

[0048] In the preferred embodiment, the locking assembly 6 further comprises a mounting frame 61 and a yoke mounting cylinder 64. The mounting frame 61 is arranged on the box assembly 100. The locking rod 65 is arranged on the mounting frame 61 and is connected with a micro motor prearranged in the mounting frame 61. The yoke mounting cylinder 64 is arranged on the box assembly 100 and is arranged perpendicularly to the connecting line of the mounting frame 61. The yoke rod 63 is rotatably arranged in the yoke mounting cylinder 64.

[0049] It can be understood that the mounting frame 61 plays a role in mounting and sliding limiting of the locking rod 65. The locking rod 65 is driven to slide by the micro motor, so that when it is needed to disengage the locking rod 65 from the front door assembly 500, it is only needed to rotate the yoke rod 63 to make the third groove 631 aligned with the locking rod 65 and electrically control the locking rod 65 to slide into the third groove 631, and then the front door assembly 500 can be opened. The operator can operate from the outside of the box assembly 100 through the yoke handle 62.

[0050] It should be noted that the fork handle 62 can be used as a switch to control the power supply. When it is necessary to open the front door assembly 500 of the power supply switch, the fork handle 62 on the side wall of the housing assembly 100 must first be rotated to the disconnected position (so that the third groove 631 is aligned with the locking rod 65) to disconnect the control power supply, so that the circuit breaker assembly 300 will automatically trip due to the loss of power to the control circuit. At this time, the micro motor in the mounting frame 61 is triggered, and the locking rod 65 is driven by the micro motor to slide into the third groove 631. The locking rod 65 disengages from the limit hole on the front door assembly 500 and releases the locking of the front door assembly 500. Only then can the front door assembly 500 be opened. The method of closing the front door assembly 500 is the reverse of the opening procedure, so that the power supply switch front door assembly 500 can only be closed after it is locked, thus ensuring the safe operation of the power supply switch.

[0051] In some embodiments, please refer to Figure 5 , 6 As shown, the interlocking mechanism includes a locking assembly 7, which includes a locking hook plate 71 and a door locking rod 72. The locking hook plate 71 is mounted on the lifting plate 201, and the door locking rod 72 is mounted on the front door assembly 500. The locking hook plate 71 has a connecting part 711 at one end near the front door assembly 500, and a vertical locking hook part 712 is provided on the connecting part 711. The locking hook part 712 is used to abut against the door locking rod 72 during the process of the lifting plate 201 driving the locking hook plate 71 to rise, so as to lock the front door assembly 500 and prevent it from being opened.

[0052] Understandably, the locking assembly 7 can be linked with the circuit breaker assembly 300. Only when the circuit breaker assembly 300 descends to the preset position can the locking hook plate 71 disconnect the locking of the front door assembly 500, and only then can the door opening operation be performed. This achieves the multi-interlock protection effect of the front door assembly 500. The simple locking structure of the locking hook plate 71 and the door locking rod 72 achieves the functions of error prevention and multiple protection.

[0053] It should be noted that the door locking rod 72 is set horizontally on the front door assembly 500, and there is a gap between the door locking rod 72 and the inner wall of the front door so that the locking hook part 712 can pass through the gap when it rises and cooperate with the door locking rod 72 to lock the front door assembly 500, so that the front door assembly 500 cannot be pulled open.

[0054] Preferably, please refer to Figure 3 , 4 As shown, the manual drive assembly 2 also includes a power-off baffle 25, which is disposed on the drive shaft 21. The power-off baffle 25 is used to trigger the power-off limit switch 26 when the drive shaft 21 slides toward the connector 22.

[0055] It can be understood that by setting the power-off baffle 25 on the driving shaft 21, the power-off stroke switch 26 can be triggered by the power-off baffle 25 during the sliding of the driving shaft 21 to the connecting piece 22, so as to realize seamless switching between electric lifting and manual lifting without additional operation of disconnecting the power supply of the motor 3. The position of the power-off baffle 25 on the driving shaft 21 can be adjusted conveniently to meet the setting of the triggering stroke, which is conducive to adapting to different installation conditions.

[0056] Optionally, the manual driving assembly 2 further comprises a mounting sleeve 23 and a hand wheel 24. The mounting sleeve 23 is arranged on the mounting bottom plate 101, and the driving shaft 21 is slidingly arranged in the mounting sleeve 23. The hand wheel 24 is arranged at one end of the driving shaft 21 away from the connecting piece 22.

[0057] It can be understood that by arranging the hand wheel 24 on the driving shaft 21, the operator can conveniently rotate the driving shaft 21 manually through the hand wheel 24, which is conducive to improving the convenience of operation. At the same time, the driving shaft 21 can be conveniently driven to slide through the hand wheel 24, and the control accuracy of the driving shaft 21 is improved.

[0058] Optionally, please refer to Figure 4 The second end of the connecting piece 22 is provided with a connecting sleeve 221, a first insertion hole is arranged on the side wall of the connecting sleeve 221, a second insertion hole is arranged on the shaft head of one end of the driving shaft 21 close to the connecting piece 22, the shaft head is used for inserting into the connecting sleeve 221, and the latch is used for sequentially penetrating into the first insertion hole and the second insertion hole to lock and position the connecting sleeve 221 and the driving shaft 21.

[0059] It can be understood that in this optional solution, when the driving shaft 21 is clamped into the connecting sleeve 221, the driving shaft 21 and the connecting sleeve 221 can be locked and positioned by the latch to realize the clamping and fixing of the driving shaft 21 and the connecting piece 22. Then the connecting piece 22 can be driven to rotate by the driving shaft 21.

[0060] Optionally, the shaft head of the driving shaft 21 is provided with a spring buckle, and the side wall of the connecting sleeve 221 is provided with a clamping hole. The driving shaft 21 and the connecting sleeve 221 can also be conveniently clamped by the cooperation of the spring buckle and the clamping hole. At the same time, the connection and fastening of the driving shaft 21 and the connecting sleeve 221 can be further strengthened by bolts to ensure the stability of the connection.

[0061] Preferably, please refer to Figure 1 , 2, 3, 4, the first recess 211 is formed on the driving shaft 21, the lifting device driven manually or electrically further comprises a clamping assembly 4 and a limiting assembly 5, the clamping assembly 4 is rotatably arranged on the box assembly 100, the clamping assembly 4 is used for clamping into the first recess 211 to limit the sliding of the driving shaft 21, and the limiting assembly 5 is arranged on the box assembly 100, and the limiting assembly 5 is used for abutting against the clamping assembly 4 when the clamping assembly 4 clamps into the first recess 211 and limiting the rotation of the clamping assembly 4.

[0062] It can be understood that the sliding movement of the driving shaft 21 can be limited by clamping the clamping assembly 4 into the first recess 211, since the clamping assembly 4 is rotatably arranged, in order to ensure the limiting stability of the clamping assembly 4 to the driving shaft 21, and facilitate the clamping assembly 4 to release the limiting of the driving shaft 21, the rotation of the clamping assembly 4 can be limited by abutting against the clamping assembly 4 through the limiting assembly 5.

[0063] Preferably, please refer to Figure 1 , 2 , 3, 4, the clamping assembly 4 comprises a clamping piece 41 and a supporting shaft 42, the supporting shaft 42 is horizontally arranged on a preset supporting plate of the box assembly 100, the clamping piece 41 is rotatably sleeved on the supporting shaft 42, a clamping portion 411 is arranged at the first end of the clamping piece 41, the clamping portion 411 is used for clamping into the first recess 211, and avoiding grooves 412 are formed on the two sides of the clamping portion 411, the avoiding grooves 412 are used for avoiding the interference between the clamping piece 41 and the driving shaft 21 when the clamping portion 411 is separated from the first recess 211.

[0064] It can be understood that the clamping piece 41 is overall in a fan shape, the horizontal sliding of the driving shaft 21 can be limited by clamping the clamping portion 411 at the first end of the clamping piece 41 into the first recess 211, when the clamping portion 411 is separated from the first recess 211, since the avoiding grooves 412 are arranged on the clamping piece 41, the sliding of the driving shaft 21 can be avoided from being interfered by the clamping piece 41.

[0065] Preferably, please refer to Figure 2 , the limiting slot 414 is formed on the clamping piece 41, and the clamping assembly 4 further comprises a limiting rod 43, the limiting rod 43 is horizontally arranged on a preset connecting plate of the box assembly 100, and the limiting rod 43 is used for being inserted into the limiting slot 414 to limit the rotation angle of the clamping piece 41.

[0066] It can be understood that in order to limit the rotation angle of the clamping piece 41, the clamping piece 41 is prevented from interfering with the driving shaft 21 to affect the rotation of the driving shaft 21, the limiting rod 43 fixedly arranged in the horizontal direction is inserted into the limiting slot 414, the clockwise or counterclockwise rotation of the clamping piece 41 can be limited, so that the clamping piece 41 can only rotate by a certain angle, and the avoiding grooves 412 are arranged to prevent the clamping piece 41 from interfering with the driving shaft 21.

[0067] It should be noted that the limiting groove 414 is an arc-shaped slot hole structure, when the clamping part 41 rotates around the support shaft 42, the limiting rod 43 is inserted into the arc-shaped limiting groove 414 to limit the swing amplitude of the clamping part 41.

[0068] Preferably, please refer to Figure 1 The second end of the clamping part 41 is provided with a clamping groove 413, and the limiting assembly 5 comprises a mounting cylinder 51 and a sliding part 52. The mounting cylinder 51 is arranged on the pre-set connecting rod of the box assembly 100, and the sliding part 52 is slidingly arranged in the mounting cylinder 51. The sliding part 52 is used to extend out of the mounting cylinder 51 and be clamped into the clamping groove 413 to limit the rotation of the clamping part 41.

[0069] Specifically, the limiting part 522 is arranged on the sliding part 52, and the second groove 521 is arranged on the limiting part 522. The limiting part 522 is used to be clamped into the clamping groove 413, and the second groove 521 is used to be arranged correspondingly with the clamping groove 413 after the limiting part 522 is slid into the mounting cylinder 51 to avoid the interference of the sliding part 52 with the rotation of the clamping part 41.

[0070] Here, the clamping groove 413 is preferably an arc-shaped groove structure, which can better cooperate with the cylindrical limiting part 522 to realize the rotation limiting of the clamping part 41.

[0071] It can be understood that the sliding part 52 is slid into the clamping groove 413 through the limiting part 522 to limit the rotation of the clamping part 41, so as to ensure that the clamping part 41 stably limits the sliding of the driving shaft 21 through the clamping part 411, avoid the driving shaft 21 from mistakenly touching the trip switch 26, and ensure that the motor 3 normally drives the screw rod 11 to rotate. When it is needed to switch to the manual lifting function, the sliding part 52 is only pushed to push the second groove 521 into the clamping groove 413. At this time, the second groove 521 has the function of avoiding interference with the clamping part 41, so that the clamping part 41 can be rotated manually, and the driving shaft 21 and the connecting part 22 are connected, so that the driving shaft 21 can be rotated by rotating the hand wheel 24, and the lifting function of the lifting plate 201 can be manually controlled. The circuit breaker assembly 300 can be placed on the lifting plate 201, and the height of the manual fine circuit breaker assembly 300 can be realized.

[0072] It should be noted that the positions of the clamping groove 413 and the clamping part 411 are preferably arranged oppositely, so as to ensure that the clamping part 411 of the first end of the clamping part 41 can be stably clamped into the first groove 211 when the sliding part 52 is slid into the clamping groove 413.

[0073] Preferably, please refer to Figure 1As shown, the box assembly 100 further comprises a first mounting plate 102 and a second mounting plate 104 fixed in sequence from top to bottom, the first mounting plate 102 and the second mounting plate 104 are arranged on the side plate of the box assembly 100, the guide rod 103 is vertically arranged between the first mounting plate 102 and the second mounting plate 104, the upper travel switch 105 is arranged on the first mounting plate 102, and the lower travel switch 106 is arranged on the second mounting plate 104, and the upper travel switch 105 and the lower travel switch 106 are respectively used for monitoring the lifting and lowering travel of the lifting plate 201.

[0074] It can be understood that the upper travel switch 105 and the lower travel switch 106 can control the lifting and lowering range of the lifting plate 201 to monitor the position of the lifting plate 201 rising or falling to adapt to different use conditions.

[0075] Optionally, please refer to Figure 7 , 8 , 9, the junction box assembly 600 is provided with a quick plug assembly 400, the quick plug assembly 400 comprises a quick plug flange 401, the mine explosion-proof and intrinsically safe permanent magnet vacuum feeder switch further comprises a station connection terminal post assembly 700, the station connection terminal post assembly 700 is used for cooperating with the quick plug flange 401 to sequentially connect a plurality of mine explosion-proof and intrinsically safe permanent magnet vacuum feeder switches in series for station connection use.

[0076] It can be understood that in some optional schemes, the feeder switch of the present application can be used alone or in combination, and when used in combination, the quick plug flange 401 cooperates with the station connection terminal post assembly 700 to realize the series connection of multiple feeder switches for station connection use, the connection mode is very convenient, the conventional flange connection is adopted, and the feeder switch is convenient to disassemble, maintain and use, which is beneficial to improve the overall use convenience.

[0077] It should be noted that in this paper, the term "including", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0078] The principles and implementations of the present application are described herein with specific examples. The above examples are only used to help understand the method and its core idea of the present application. The above description is only the preferred embodiments of the present application. It should be pointed out that due to the limited nature of the language expression, there are objectively infinite specific structures, and for ordinary skilled persons in the art, without departing from the principles of the present application, a number of improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner. The improvements, refinements, changes or combinations, or the application of the inventive concept and technical solution to other fields without improvement, shall be regarded as the protection of the present application.

Claims

1. A mine-used permanent-magnetic vacuum feeder switch, comprising a box assembly (100), a lifting plate assembly (200), a lifting machine (1), a manual driving assembly (2) and a motor (3) arranged in the box assembly (100). The circuit breaker assembly (300) and the terminal box assembly (600) are arranged in the front door assembly (500) at the front of the box assembly (100), characterized in that, The mine-used permanent-magnetic vacuum feeder switch further comprises a lifting plate assembly (200), a lifting machine (1), a manual driving assembly (2) and a motor (3): The box assembly (100) comprises a mounting bottom plate (101) and a vertically arranged guide rod (103), the lifting machine (1) is arranged on the mounting bottom plate (101), the lifting plate assembly (200) comprises a lifting plate (201) sleeved on the guide rod (103), the circuit breaker assembly (300) is mounted on the lifting plate (201), the output end of the lifting machine (1) is connected with the lifting plate (201) and used to drive the lifting plate (201) to move up and down along the guide rod (103), the output shaft of the motor (3) is connected with the first input end of the lifting machine (1); The manual driving assembly (2) comprises a driving shaft (21), a connecting piece (22) and a power-off stroke switch (26), the first end of the connecting piece (22) is connected with the second input end of the lifting machine (1), the driving shaft (21) is slidably arranged on the mounting bottom plate (101), the driving shaft (21) is used to slide towards the connecting piece (22) and be clamped with the second end of the connecting piece (22) or slide away from the connecting piece (22) and be separated from the connecting piece (22), the driving shaft (21) is further used to drive the connecting piece (22) to rotate after being clamped with the connecting piece (22), the power-off stroke switch (26) is used to be triggered and cut off the power supply of the motor (3) in the process that the driving shaft (21) slides towards the connecting piece (22), the power-off stroke switch (26) is further used to be separated from the driving shaft (21) and turn on the power supply of the motor (3) when the driving shaft (21) slides away from the connecting piece (22).

2. The mine-used permanent-magnetic vacuum feeder switch according to claim 1, characterized in that, The mine-used permanent-magnetic vacuum feeder switch further comprises an interlocking mechanism arranged between the box assembly (100) and the front door assembly (500), the interlocking mechanism is used to lock the front door assembly (500) after the lifting plate (201) drives the circuit breaker assembly (300) to rise to a preset position, the interlocking mechanism is further used to unlock the front door assembly (500) after the lifting plate (201) drives the circuit breaker assembly (300) to descend to the preset position.

3. A mine-used permanent-magnetic vacuum feeder switch according to claim 2, characterized in that, The interlocking mechanism comprises a locking assembly (6), the locking assembly (6) comprises a yoke handle (62), a yoke rod (63) and a locking rod (65), the locking rod (65) is slidably arranged on the box assembly (100) and is arranged in a horizontal direction perpendicular to the front door assembly (500), a first end of the locking rod (65) is used for being clamped with a limiting hole on the front door assembly (500) to lock the front door assembly (500); the yoke rod (63) is rotatably arranged on the box assembly (100) and is arranged perpendicular to the locking rod (65), a third groove (631) is formed in the side wall of the yoke rod (63), the yoke handle (62) is arranged on the yoke rod (63), the yoke handle (62) is used for driving the yoke rod (63) to rotate to align the third groove (631) with the locking rod (65), and then the second end of the locking rod (65) is slid into the third groove (631) to make the first end of the locking rod (65) disengage from the limiting hole of the front door assembly (500).

4. A mine-used permanent-magnetic vacuum feeder switch according to claim 3, characterized in that, The locking assembly (6) further comprises a mounting frame (61) and a yoke mounting cylinder (64), the mounting frame (61) is arranged on the box assembly (100), the locking rod (65) is arranged on the mounting frame (61) and is connected with a micro motor prearranged in the mounting frame (61), the yoke mounting cylinder (64) is arranged on the box assembly (100) and is arranged vertically with the connecting line of the mounting frame (61), and the yoke rod (63) is rotatably arranged in the yoke mounting cylinder (64).

5. The mine-used permanent-magnetic vacuum feeder switch according to claim 1, characterized in that, The manual driving assembly (2) further comprises a power-off baffle (25), the power-off baffle (25) is arranged on the driving shaft (21) and is used for triggering a power-off travel switch (26) when the driving shaft (21) slides to the connecting piece (22).

6. The mine-used permanent-magnetic vacuum feeder switch according to claim 1, characterized in that, A first groove (211) is formed in the driving shaft (21), the manually or electrically driven lifting device further comprises a clamping assembly (4) and a limiting assembly (5), the clamping assembly (4) is rotatably arranged on the box assembly (100) and is used for clamping into the first groove (211) to limit the sliding of the driving shaft (21); the limiting assembly (5) is arranged on the box assembly (100) and is used for abutting against the clamping assembly (4) and limiting the rotation of the clamping assembly (4) when the clamping assembly (4) clamps into the first groove (211).

7. A mine-used permanent-magnetic vacuum feeder switch according to claim 6, characterized in that, The clamping assembly (4) comprises a clamping piece (41) and a supporting shaft (42), the supporting shaft (42) is horizontally arranged on a prearranged supporting plate of the box assembly (100), the clamping piece (41) is rotatably sleeved on the supporting shaft (42), a clamping portion (411) is arranged at a first end of the clamping piece (41), the clamping portion (411) is used for clamping into the first groove (211), and avoiding grooves (412) are formed at both sides of the clamping portion (411) and are used for avoiding the interference between the clamping piece (41) and the driving shaft (21) when the clamping portion (411) disengages from the first groove (211).

8. A mine-used permanent-magnetic vacuum feeder switch according to claim 7, characterized in that, The second end of the clamping part (41) is provided with a clamping groove (413), the limiting assembly (5) comprises a mounting cylinder (51) and a sliding part (52), the mounting cylinder (51) is arranged on the connecting rod of the box assembly (100), the sliding part (52) is slidingly arranged in the mounting cylinder (51), and the sliding part (52) is used for extending out of the mounting cylinder (51) and clamped into the clamping groove (413) to limit the rotation of the clamping part (41).

9. A mine-used permanent-magnetic vacuum feeder switch according to claim 8, characterized in that, The sliding part (52) is provided with a limiting part (522), the limiting part (522) is provided with a second groove (521), the limiting part (522) is used for clamping into the clamping groove (413), and the second groove (521) is used for being correspondingly arranged with the clamping groove (413) after the limiting part (522) is slidingly arranged in the mounting cylinder (51) to avoid the interference of the sliding part (52) with the rotation of the clamping part (41).

10. The mine-used permanent-magnetic vacuum feeder switch according to claim 1, characterized in that, The box assembly (100) further comprises a first mounting plate (102) and a second mounting plate (104) which are fixed in sequence from top to bottom, the first mounting plate (102) and the second mounting plate (104) are arranged on the side plate of the box assembly (100), the guide rod (103) is vertically arranged between the first mounting plate (102) and the second mounting plate (104), the upper stroke switch (105) is arranged on the first mounting plate (102), and the lower stroke switch (106) is arranged on the second mounting plate (104), the upper stroke switch (105) and the lower stroke switch (106) are respectively used for monitoring the stroke of the lifting plate (201) in the upward and downward directions.

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