CN213124202U

CN213124202U - Safety interlocking mechanism of mining safety type frequency converter

Info

Publication number: CN213124202U
Application number: CN202022208116.8U
Authority: CN
Inventors: 刘忠; 刘屹东
Original assignee: Zhangjiagang Shengheng Machinery Equipment Manufacturing Co ltd
Current assignee: Zhangjiagang Shengheng Machinery Equipment Manufacturing Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-05-04
Anticipated expiration: 2030-09-30

Abstract

The utility model discloses a safety interlocking mechanism of mining safe type converter, include: the cabinet body and cabinet door, be equipped with two support arms with cabinet body looks articulated on the cabinet body, be equipped with the back shaft of taking the sliding sleeve on two support arms respectively, two sliding sleeves are fixed mutually with the cabinet door respectively, be equipped with logical groove on two back shafts respectively, be equipped with the vertical axis between two sliding sleeves, be equipped with eccentric columella on the vertical axis both ends face respectively, two columella of vertical axis insert respectively to two logical inslots, be equipped with the card limit on the left and right sides of cabinet door respectively, be equipped with the draw-in groove on the cabinet body, be equipped with first lock tooth on the cabinet door inboard, be equipped with second lock tooth on the cabinet body opening, be equipped with mount pad and operating axis on the cabinet body, be equipped with the lock dish on the operating axis, wear to be equipped with the interlocking rod on the mount pad, be equipped with the positioning disk. The safety interlocking mechanism can ensure that the opening and closing of the cabinet door and the on-off electricity in the cabinet body are interlocked.

Description

Safety interlocking mechanism of mining safety type frequency converter

Technical Field

The utility model relates to a mining safe type converter, concretely relates to safety interlocking device of mining safe type converter.

Background

The mining safety type frequency converter comprises a cabinet body and a cabinet door, wherein the on-off of an electrical element in the cabinet body is controlled by an operating handle, the electrical element in the cabinet body can be switched on or off by rotating the operating handle, but the opening and closing of the cabinet door of the existing mining safety type frequency converter are not interlocked with the on-off of the cabinet body, so that the cabinet door can be opened under the condition of no power off or can be easily switched on by rotating the operating handle under the condition that the cabinet door is not closed, and inflammable gas in a mine is easily ignited by electric sparks in the cabinet body to cause explosion.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the safety interlocking mechanism of the mining safety type frequency converter can ensure that the opening and closing of the cabinet door and the on-off electricity in the cabinet body are interlocked.

In order to solve the above problem, the utility model discloses the technical scheme who adopts does: safety interlocking mechanism of mining safe type converter includes: the cabinet body and cabinet door, the vertical opening that is used for the closed cabinet body in one side of the cabinet body of installing of cabinet door, its characterized in that: the cabinet body at one side of the cabinet door is provided with two supporting arms which are vertically arranged at intervals and are respectively hinged with the cabinet body, so that the two supporting arms can swing left and right, the two supporting arms are respectively provided with a supporting shaft which is horizontally arranged, the two supporting shafts are respectively sleeved with a sliding sleeve, one end of each sliding sleeve is respectively fixed with the cabinet door, so that the two supporting arms can support the cabinet door through the two supporting shafts and the two sliding sleeves and can also enable the cabinet door to rotate and open, the two supporting shafts are respectively provided with a through groove which vertically penetrates through the supporting shafts, the two through grooves are vertically arranged in an aligned manner, a vertical shaft is arranged between the two sliding sleeves, the middle part of the vertical shaft is provided with a handle for driving the vertical shaft to rotate, two end faces of the vertical shaft are respectively provided with a small column which is eccentric to the vertical shaft, and, two ends of the vertical shaft respectively penetrate through the side wall on one side of the two sliding sleeves, so that the two small columns on the vertical shaft are respectively inserted into the two through grooves, after the vertical shaft is driven to rotate by the handle, the two small columns can swing to abut against the side walls of the through grooves, then the two small columns can reversely drive the vertical shaft by pushing the side walls of the through grooves, the two sliding sleeves and the cabinet door horizontally slide on the two supporting shafts, a vertically arranged clamping edge is respectively arranged on the left side and the right side of the cabinet door, a vertically arranged clamping groove for clamping the clamping edge on the same side is respectively arranged on the cabinet body on the left side and the right side of the cabinet door, a first locking tooth is arranged on the inner side of the cabinet door, a second locking tooth is arranged on the opening edge of the cabinet body, when the cabinet door is closed, the first locking tooth can swing inwards to the inner side of the second locking tooth, and then the first locking tooth can be horizontally moved to a position aligned with the inner side and, Two card limits are blocked respectively to two draw-in grooves in, make the cabinet door can block first lock tooth and draw-in groove spacing and lock on the cabinet body to the card limit through the second lock tooth, when the cabinet door needs the unblock to be opened, through handle drive cabinet door reverse translation, make two card limits leave two draw-in grooves respectively, make first lock tooth stagger with the second lock tooth simultaneously, so that make the draw-in groove not spacing to the card limit and make first lock tooth not blockked by the second lock tooth, just so can unblock the cabinet door, make the cabinet door can be rotated and opened, still be provided with a mount pad and an operating axis of taking the handle on the cabinet body, can pass through the outage to the electrical components in the cabinet body behind the handle rotation operating axis, be provided with a lock dish of taking the breach of dodging on the operating axis, wear to be equipped with a horizontally arranged interlocking lever on the mount pad, be provided with a first reset spring who is used for resetting interlocking lever suit on the interlocking lever between interlocking lever and the mount pad When the operating shaft rotates to the power-on position for powering on the cabinet body, the edge of the lock disc can press the interlocking rod, so that the interlocking rod can compress the first reset spring to extend, the end part of the interlocking rod can block the cabinet door after extending out, so that the cabinet door cannot be driven to reversely translate, the cabinet door cannot be unlocked, the cabinet door cannot be opened when the cabinet body is powered on, when the operating shaft rotates to the power-off position for powering off the cabinet body, the avoiding notch on the lock disc can rotate to be opposite to the interlocking rod, so that the lock disc can avoid the interlocking rod through the avoiding notch, the interlocking rod cannot be pressed, the interlocking rod can reset under the action of the first reset spring without blocking the cabinet door, the cabinet door can be driven to reversely translate and unlock, the interlocking rod can prevent the operating shaft from rotating after abutting against the avoiding notch, so that the cabinet body cannot be powered on, the operating shaft is also provided with a positioning disk positioned in the cabinet body, the edge of the positioning disk is provided with two positioning grooves which are arranged at intervals, the cabinet body is also provided with a connecting rod in a penetrating way, the outer end of the connecting rod is provided with a button, the inner end of the connecting rod is provided with a positioning block, a second reset spring is sleeved on the connecting rod between the button and the cabinet body, the button can bounce outwards under the action of the second reset spring until the positioning block abuts against the inner wall of the cabinet body, when the operating shaft is positioned at the power-on position, the positioning block can be clamped into one positioning groove to lock the operating shaft, so that the operating shaft cannot be rotationally switched to the power-off position, only when the button is pressed down, the positioning block can be moved inwards to be separated from the positioning groove, the operating shaft can be driven to rotate to the power-off position, when the operating shaft is positioned at the power-off position, the positioning block can be clamped, the operation shaft can not be rotated to be switched to the electrifying position, and the operation shaft can be driven to rotate to the electrifying position only by manually shifting the interlocking rod to enable the interlocking rod not to prevent the operation shaft from rotating and pressing the button.

Further, the safety interlocking mechanism of the mining safety type frequency converter comprises: the structure of the vertical shaft comprises: the connecting sleeve is positioned between the two short shafts, the inner ends of the two short shafts are respectively inserted into two ends of the connecting sleeve, and each short shaft is fixed with the connecting sleeve by screwing a screw and a nut which penetrate through the connecting sleeve and the short shafts; the handle is arranged on the connecting sleeve.

Further, the safety interlocking mechanism of the mining safety type frequency converter comprises: the handle is hinged with the connecting sleeve, so that the handle can swing up and down, and the handle can be vertically placed.

Further, the safety interlocking mechanism of the mining safety type frequency converter comprises: four planes which are uniformly arranged around the short shaft and can be used for pulling the short shaft to rotate are respectively cut on the two short shafts.

Further, the safety interlocking mechanism of the mining safety type frequency converter comprises: the first locking teeth and the second locking teeth are respectively provided with a plurality of teeth, and the first locking teeth and the second locking teeth are respectively in one-to-one correspondence with each other.

Further, the safety interlocking mechanism of the mining safety type frequency converter comprises: the positioning groove is an arc-shaped groove, and the positioning block is a circular block.

Further, the safety interlocking mechanism of the mining safety type frequency converter comprises: the two sliding sleeves are respectively provided with an oil filling hole which can be used for filling lubricating oil into the sliding sleeve at the position of the through groove, and the two oil filling holes are connected with a plug in a threaded manner.

The utility model has the advantages that: the safety interlocking device of mining safe type converter enable the opening and close of cabinet door and the internal break-make electricity of cabinet interlock mutually, make the cabinet door can't be opened by the unblock under the internal circumstances of not cutting off the power supply of cabinet, only can just can be opened by the unblock at the internal outage back cabinet door of cabinet, when the cabinet door is opened because the locating piece card is gone into to the constant head tank and the interlocking lever stops the operating axis rotatory, make the internal unable circular telegram of cabinet, after the cabinet door is closed the locking, only manual stirring interlocking lever ensures the unable unblock of cabinet door to the position that can block cabinet door reverse movement unblock, after pressing the button, the operating axis just can rotate to the circular telegram position, make circular telegra.

Drawings

Fig. 1 is the utility model discloses a spatial structure schematic diagram of safety interlocking mechanism of mining safe type converter when the cabinet door is closed and is locked.

Fig. 2 is the three-dimensional structure schematic diagram of the safety interlocking mechanism of the mining safety type frequency converter when the cabinet door is unlocked.

Fig. 3 is the utility model discloses a spatial structure schematic diagram of safety interlocking mechanism of mining safe type converter when the cabinet door is opened.

Fig. 4 is the assembly structure diagram of the small column and the through groove in the safety interlocking mechanism of the mining safety type frequency converter.

Fig. 5 is a schematic structural diagram of the positioning block and the positioning groove obtained by observing the safety interlocking mechanism of the mining safety type frequency converter from the inside of the cabinet when the operating shaft is located at the power-on position.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.

As shown in fig. 1, 2, 3, 4 and 5, the safety interlocking mechanism of the mining safety type frequency converter comprises: the cabinet comprises a cabinet body 1 and a cabinet door 2, wherein the cabinet door 2 is vertically arranged at one side of the cabinet body 1 and used for sealing an opening of the cabinet body 1, two supporting arms 3 which are vertically arranged at intervals are arranged on the cabinet body 1 at one side of the cabinet door 2, the two supporting arms 3 are respectively hinged with the cabinet body 1, so that the two supporting arms 3 can both swing left and right, a supporting shaft 31 which is horizontally arranged is respectively arranged on the two supporting arms 3, a sliding sleeve 4 is respectively sleeved on the two supporting shafts 31, one end of each sliding sleeve 4 is respectively fixed with the cabinet door 2, so that the two supporting arms 3 can support the cabinet door 2 through the two supporting shafts 31 and the two sliding sleeves 4 and can also enable the cabinet door 2 to rotate to open, a through groove 32 which vertically penetrates through the supporting shafts 31 is respectively arranged on the two supporting shafts 31, the two through grooves 32 are vertically arranged in an aligned manner, a vertical shaft 5 is arranged between the two, two small columns 52 eccentric to the vertical shaft 5 are respectively arranged on two end faces of the vertical shaft 5, the two small columns 52 are arranged in an up-down alignment manner, two ends of the vertical shaft 5 respectively penetrate through one side wall of the two sliding sleeves 4, so that the two small columns 52 on the vertical shaft 5 are respectively inserted into the two through grooves 32, after the vertical shaft 5 is driven to rotate by the handle 51, the two small columns 52 can swing to abut against the side walls of the through grooves 32, then the two small columns 52 can reversely drive the vertical shaft 5, the two sliding sleeves 4 and the cabinet door 2 to horizontally slide on the two supporting shafts 31 by pushing the side walls of the through grooves 32, a vertically arranged clamping edge 21 is respectively arranged on the left side and the right side of the cabinet door 2, a vertically arranged clamping groove 11 which can be clamped by the clamping edge 21 on the same side is respectively arranged on the cabinet body 1 on the left side and the right side of the cabinet door 2, a first locking tooth 22 is arranged on the inner side of the cabinet door 2, a second, when the cabinet door 2 is closed, the first lock tooth 22 swings inwards to the inner side of the second lock tooth 12, then the handle 51 drives the cabinet door 2 to translate forwards to enable the first lock tooth 22 to translate to a position aligned with the inside and the outside of the second lock tooth 12, the two clamping edges 21 are respectively clamped into the two clamping grooves 11, so that the cabinet door 2 can block the first lock tooth 22 through the second lock tooth 12 and the clamping grooves 11 can limit the clamping edges 21 to lock on the cabinet body 1, when the cabinet door 2 needs to be unlocked and opened, the handle 51 drives the cabinet door 2 to translate reversely, so that the two clamping edges 21 can respectively leave the two clamping grooves 11, meanwhile, the first lock tooth 22 and the second lock tooth 12 are staggered, so that the clamping grooves 11 can not limit the clamping edges 21 and the first lock tooth 22 can not be blocked by the second lock tooth 12, the cabinet door 2 can be unlocked, the cabinet door 2 can be rotated and opened, the cabinet body 1 is further provided with a mounting seat 6 and an operating shaft 7 with a handle 71, the electric elements in the cabinet body 1 can be switched on and off after the operating shaft 7 is rotated by the handle 71, the operating shaft 7 is provided with a lock disc 8 with an avoiding gap 81, the mounting seat 6 is penetrated with a horizontally arranged interlocking rod 61, a first reset spring 62 which is sleeved on the interlocking rod 61 and is used for resetting the interlocking rod 61 is arranged between the interlocking rod 61 and the mounting seat 6, two ends of the first reset spring 62 are respectively abutted against bosses on the mounting seat 6 and the interlocking rod 61, when the operating shaft 7 is rotated to a power-on position enabling the cabinet body 1 to be powered on, the edge of the lock disc 8 can press the interlocking rod 61, so that the interlocking rod 61 can compress the first reset spring 62 to extend out, the end part of the interlocking rod 61 can block the cabinet door 2 after extending out, the cabinet door 2 cannot be driven to reversely translate, and the cabinet door 2 cannot be unlocked, so that the cabinet door 2 cannot be unlocked, and the cabinet door 2 is prevented from being opened when the power-on in the cabinet body 1, when the operating shaft 7 rotates to the power-off position for powering off the cabinet body 1, the avoiding notch 81 on the lock disc 8 rotates to be opposite to the interlocking rod 61, so that the lock disc 8 can avoid the interlocking rod 61 through the avoiding notch 81, and the interlocking rod 61 is not pressed, so that the interlocking rod 61 can reset under the action of the first return spring 62 and does not block the cabinet door 2, so that the cabinet door 2 can be driven to reversely translate and unlock, the interlocking rod 61 can prevent the operating shaft 7 from rotating after abutting against the avoiding notch 81, so that the cabinet body 1 cannot be powered on, the operating shaft 7 is also provided with a positioning disc 9 positioned in the cabinet body 1, the edge of the positioning disc 9 is provided with two positioning grooves 91 arranged at intervals, the cabinet body 1 is also provided with a connecting rod in a penetrating manner, the outer end of the connecting rod is provided with a button 92, the inner end of the connecting rod is provided with a positioning block 93, a second reset spring 94 is sleeved on a connecting rod between the button 92 and the cabinet body 1, two ends of the second reset spring 94 respectively abut against the button 92 and the cabinet body 1, the button 92 can be bounced outwards under the action of the second reset spring 94 until a positioning block 93 abuts against the inner wall of the cabinet body 1, when the operating shaft 7 is located at a power-on position, the positioning block 93 can be clamped into one positioning groove 91 to lock the operating shaft 7, so that the operating shaft 7 cannot be rotationally switched to a power-off position, only when the button 92 is pressed down, the positioning block 93 is moved inwards to separate from the positioning groove 91, the operating shaft 7 cannot be driven to rotate to the power-off position, when the operating shaft 7 is located at the power-off position, the positioning block 93 can be clamped into the other positioning groove 91 to lock the operating shaft 7, so that the operating shaft 7 cannot be rotationally switched to the power-on position, only when the manual toggle rod 61 is located at a position where the cabinet door 2 can be blocked to reversely move and unlock, the interlocking rod 61 cannot When the button 92 is pressed, the operation shaft 7 can be driven and rotated to the energized position.

In actual production, in order to facilitate a worker to independently operate the cabinet body to energize, the size of the positioning block 93 is usually made smaller or the size of the positioning groove 91 is made larger, so that after the positioning block 93 is clamped into the positioning groove 91, a gap exists between the positioning block 93 and the positioning groove 91, the operating shaft 7 cannot be completely locked and can also rotate in a small range, but the on-off state cannot be switched, after the cabinet door is closed and locked, the worker firstly needs to manually stir the interlocking rod 61 to a position capable of blocking the cabinet door 2 from moving reversely and unlocking, then manually drive the operating shaft 7 to rotate in a small range, so that the edge of the locking disc 8 on the operating shaft 7 can press the interlocking rod 61, so that the interlocking rod 61 cannot retract and reset, then, one free hand of the worker presses the button 92, so that the operating shaft 7 is not locked, at this time, the worker can drive the operating shaft 7 to rotate to the energized, so that the cabinet body 1 is electrified.

In the present embodiment, the structure of the vertical shaft 5 includes: two short shafts 53 and a connecting sleeve 54, wherein the two short shafts 53 are arranged in an up-down alignment manner, the connecting sleeve 54 is positioned between the two short shafts 53, the inner ends of the two short shafts 53 are respectively inserted into two ends of the connecting sleeve 54, and each short shaft 53 is fixed with the connecting sleeve 54 by screwing a screw and a nut which penetrate through the connecting sleeve 54 and the short shaft 53; the handle 51 is mounted on the connection sleeve 54. The vertical shaft 5 is provided in two stages for the convenience of installation.

The handle 51 is hinged to the connection sleeve 54 so that the handle 51 can swing up and down, thereby allowing the handle 51 to be vertically placed. This is provided so that the handle 51 can be vertically stored.

Four flat surfaces 55 which are uniformly arranged around the stub shaft 53 and can be used for rotating the tool pulling stub shaft 53 are respectively cut on the two stub shafts 53. This is provided to pull the vertical shaft 5 to rotate by a tool with a long torque when the vertical shaft 5 is caught and cannot be driven to rotate by the handle 51 with a short torque.

The first and second lock teeth 22 and 12 are provided in plural numbers, and they correspond to each other one by one. After the arrangement, the cabinet door can be more explosion-proof.

The positioning slot 91 is an arc-shaped slot, and the positioning block 93 is a circular block. This arrangement makes it easier for the positioning block 93 to be engaged in the positioning groove 91.

Two sliding sleeves 4 are respectively provided with an oil filling hole which can be used for filling lubricating oil into the sliding sleeve 4 at the position of the through groove 32, and the two oil filling holes are both in threaded connection with a plug 41.

Claims

1. Safety interlocking mechanism of mining safe type converter includes: the cabinet body and cabinet door, the vertical opening that is used for the closed cabinet body in one side of the cabinet body of installing of cabinet door, its characterized in that: the cabinet body at one side of the cabinet door is provided with two supporting arms which are vertically arranged at intervals and are respectively hinged with the cabinet body, so that the two supporting arms can swing left and right, the two supporting arms are respectively provided with a supporting shaft which is horizontally arranged, the two supporting shafts are respectively sleeved with a sliding sleeve, one end of each sliding sleeve is respectively fixed with the cabinet door, so that the two supporting arms can support the cabinet door through the two supporting shafts and the two sliding sleeves and can also enable the cabinet door to rotate and open, the two supporting shafts are respectively provided with a through groove which vertically penetrates through the supporting shafts, the two through grooves are vertically arranged in an aligned manner, a vertical shaft is arranged between the two sliding sleeves, the middle part of the vertical shaft is provided with a handle for driving the vertical shaft to rotate, two end faces of the vertical shaft are respectively provided with a small column which is eccentric to the vertical shaft, and, two ends of the vertical shaft respectively penetrate through the side wall on one side of the two sliding sleeves, so that the two small columns on the vertical shaft are respectively inserted into the two through grooves, after the vertical shaft is driven to rotate by the handle, the two small columns can swing to abut against the side walls of the through grooves, then the two small columns can reversely drive the vertical shaft by pushing the side walls of the through grooves, the two sliding sleeves and the cabinet door horizontally slide on the two supporting shafts, a vertically arranged clamping edge is respectively arranged on the left side and the right side of the cabinet door, a vertically arranged clamping groove for clamping the clamping edge on the same side is respectively arranged on the cabinet body on the left side and the right side of the cabinet door, a first locking tooth is arranged on the inner side of the cabinet door, a second locking tooth is arranged on the opening edge of the cabinet body, when the cabinet door is closed, the first locking tooth can swing inwards to the inner side of the second locking tooth, and then the first locking tooth can be horizontally moved to a position aligned with the inner side and, Two card limits are blocked respectively to two draw-in grooves in, make the cabinet door can block first lock tooth and draw-in groove spacing and lock on the cabinet body to the card limit through the second lock tooth, when the cabinet door needs the unblock to be opened, through handle drive cabinet door reverse translation, make two card limits leave two draw-in grooves respectively, make first lock tooth stagger with the second lock tooth simultaneously, so that make the draw-in groove not spacing to the card limit and make first lock tooth not blockked by the second lock tooth, just so can unblock the cabinet door, make the cabinet door can be rotated and opened, still be provided with a mount pad and an operating axis of taking the handle on the cabinet body, can pass through the outage to the electrical components in the cabinet body behind the handle rotation operating axis, be provided with a lock dish of taking the breach of dodging on the operating axis, wear to be equipped with a horizontally arranged interlocking lever on the mount pad, be provided with a first reset spring who is used for resetting interlocking lever suit on the interlocking lever between interlocking lever and the mount pad When the operating shaft rotates to the power-on position for powering on the cabinet body, the edge of the lock disc can press the interlocking rod, so that the interlocking rod can compress the first reset spring to extend, the end part of the interlocking rod can block the cabinet door after extending out, so that the cabinet door cannot be driven to reversely translate, the cabinet door cannot be unlocked, the cabinet door cannot be opened when the cabinet body is powered on, when the operating shaft rotates to the power-off position for powering off the cabinet body, the avoiding notch on the lock disc can rotate to be opposite to the interlocking rod, so that the lock disc can avoid the interlocking rod through the avoiding notch, the interlocking rod cannot be pressed, the interlocking rod can reset under the action of the first reset spring without blocking the cabinet door, the cabinet door can be driven to reversely translate and unlock, the interlocking rod can prevent the operating shaft from rotating after abutting against the avoiding notch, so that the cabinet body cannot be powered on, the operating shaft is also provided with a positioning disk positioned in the cabinet body, the edge of the positioning disk is provided with two positioning grooves which are arranged at intervals, the cabinet body is also provided with a connecting rod in a penetrating way, the outer end of the connecting rod is provided with a button, the inner end of the connecting rod is provided with a positioning block, a second reset spring is sleeved on the connecting rod between the button and the cabinet body, the button can bounce outwards under the action of the second reset spring until the positioning block abuts against the inner wall of the cabinet body, when the operating shaft is positioned at the power-on position, the positioning block can be clamped into one positioning groove to lock the operating shaft, so that the operating shaft cannot be rotationally switched to the power-off position, only when the button is pressed down, the positioning block can be moved inwards to be separated from the positioning groove, the operating shaft can be driven to rotate to the power-off position, when the operating shaft is positioned at the power-off position, the positioning block can be clamped, the operation shaft can not be rotated to be switched to the electrifying position, and the operation shaft can be driven to rotate to the electrifying position only by manually shifting the interlocking rod to enable the interlocking rod not to prevent the operation shaft from rotating and pressing the button.

2. The safety interlocking mechanism of the mining safety type frequency converter according to claim 1, characterized in that: the structure of the vertical shaft comprises: the connecting sleeve is positioned between the two short shafts, the inner ends of the two short shafts are respectively inserted into two ends of the connecting sleeve, and each short shaft is fixed with the connecting sleeve by screwing a screw and a nut which penetrate through the connecting sleeve and the short shafts; the handle is arranged on the connecting sleeve.

3. The safety interlocking mechanism of the mining safety type frequency converter according to claim 2, characterized in that: the handle is hinged with the connecting sleeve, so that the handle can swing up and down, and the handle can be vertically placed.

4. The safety interlocking mechanism of the mining safety type frequency converter according to claim 2, characterized in that: four planes which are uniformly arranged around the short shaft and can be used for pulling the short shaft to rotate are respectively cut on the two short shafts.

5. The safety interlocking mechanism of the mine safety type frequency converter according to claim 1, 2, 3 or 4, characterized in that: the first locking teeth and the second locking teeth are respectively provided with a plurality of teeth, and the first locking teeth and the second locking teeth are respectively in one-to-one correspondence with each other.

6. The safety interlocking mechanism of the mine safety type frequency converter according to claim 1, 2, 3 or 4, characterized in that: the positioning groove is an arc-shaped groove, and the positioning block is a circular block.

7. The safety interlocking mechanism of the mine safety type frequency converter according to claim 1, 2, 3 or 4, characterized in that: the two sliding sleeves are respectively provided with an oil filling hole which can be used for filling lubricating oil into the sliding sleeve at the position of the through groove, and the two oil filling holes are connected with a plug in a threaded manner.