CN115565812B - Mining explosion-proof and intrinsically safe vacuum feed switch for low-voltage permanent magnet mechanism - Google Patents

Abstract

The application relates to the field of feed switches, and particularly discloses a mining explosion-proof and intrinsically safe low-voltage permanent magnet mechanism vacuum feed switch which comprises a shell with an inner cavity, a connecting end fixed in the shell, a control module arranged in the shell, a front door for opening and closing an inner cavity opening of the shell, and a moving mechanism arranged in the shell in a sliding manner, wherein the moving mechanism comprises a frame and wheels arranged on the frame, and the control module is arranged on the frame. The application has the effect of improving the convenience of the control module assembly and disassembly.

Description

Mining explosion-proof and intrinsically safe vacuum feed switch for low-voltage permanent magnet mechanism

Technical Field

The application relates to the field of feed switches, in particular to a mining explosion-proof and intrinsically safe vacuum feed switch with a low-voltage permanent magnet mechanism.

Background

The feed switch plays an important role in a mine low-voltage power grid, and provides safety guarantee for operation of systems such as coal mine power supply and the like.

In the related art, the feed switch includes casing, link, control module, electrical component and qianmen, and control module includes control mechanism, permanent magnetism mechanism and divide-shut brake mechanism, and permanent magnetism mechanism includes a plurality of magnetic cylinders, and divide-shut brake mechanism includes the pipe support and sets up the vacuum switch tube on the pipe support, and the static contact of vacuum switch tube is contradicted with the link, and the connecting axle of magnetic cylinder is connected with the moving contact of vacuum switch tube. The control mechanism is used for controlling the movable iron core of the magnetic cylinder to slide, so that the connecting shaft of the magnetic cylinder is driven to move, and further the movable contact of the vacuum switch tube is controlled to move. When the moving contact of the vacuum switch tube is in contact with the fixed contact of the vacuum switch tube, the switch is closed, and when the moving contact of the vacuum switch tube is separated from the fixed contact of the vacuum switch tube, the magnetic cylinder is used for controlling the moving contact of the corresponding vacuum switch tube to move so as to realize switch-on and switch-off. The on-off shaft is connected to the electric component, and the on-off can be controlled to realize on-off of the electric component by rotating the on-off shaft.

In carrying out the present application, the inventors have found that at least the following problems exist in this technology: in the related art, the control module has high integration level, so that the weight is high, and the difficulty of the control module in the case in advance or in the case in the process of taking out and overhauling is high, so that the improvement is needed.

Disclosure of Invention

In order to improve the simplicity of the disassembly and assembly of the control module, the application provides a mining explosion-proof and intrinsically safe vacuum feed switch of a low-voltage permanent magnet mechanism.

The application provides a mining explosion-proof and intrinsically safe vacuum feed switch of a low-voltage permanent magnet mechanism, which adopts the following technical scheme:

the utility model provides a mining flameproof and intrinsically safe type low pressure permanent magnetism mechanism vacuum feed switch, includes the casing that is equipped with the inner chamber, fixes the link in the casing, sets up the control module in the casing and is used for opening and close the open-ended qianmen in the casing, still includes the mobile mechanism of sliding setting in the casing, mobile mechanism includes the frame and sets up the wheel on the frame, control module sets up on the frame.

Through adopting above-mentioned technical scheme, through setting up control module on the frame, pack into the casing or take out the maintenance time by the casing with control module in, can promote frame or control module, the wheel removes in the casing. Compared with the direct movement control module, the vehicle frame and the control module are moved through the movement of the wheels, so that the convenience of the movement of the control module is improved, and the convenience of the disassembly and assembly of the control module is improved.

Optionally, a connecting plate is arranged on the control module, a locking plate is arranged on the connecting plate, a connecting groove for inserting the locking plate is formed in the frame, and a locking groove is formed in the locking plate;

the moving mechanism further comprises a connecting assembly, the connecting assembly comprises a connecting seat, a locking block and a locking spring, a telescopic groove is formed in the side wall of the connecting seat, the locking block is arranged in the telescopic groove in a sliding mode, the locking groove is used for allowing the end portion of the locking block to be inserted, the locking spring is connected to the locking block, a locking inclined surface is arranged on the end portion, away from the bottom of the telescopic groove, of the locking block, the locking inclined surface faces the connecting groove, and when the locking spring is in a natural state, the end portion of the locking block stretches out of the telescopic groove.

Through adopting above-mentioned technical scheme, when connecting control module and moving mechanism, place control module on the frame and move control module for the frame earlier, the frame passes through the connecting plate and drives the locking plate and remove to make the locking plate insert in the spread groove, the locking plate supports to press on the locking inclined plane. Along with the control module continuing to move on the frame, the locking plate pushes the locking block to be retracted into the telescopic groove until the locking plate moves to align with the locking block, and at the moment, the locking spring drives the locking block to move and reset, and the end part of the locking block is inserted into the locking groove to limit the locking block to be pulled out of the connecting groove. The control module is connected with the frame through the connecting component, and the operation is simple and convenient.

Optionally, the coupling assembling still includes the unlocking piece, set up the pressing groove of extending direction perpendicular to expansion groove on the lateral wall of coupling seat, pressing groove is linked together with the expansion groove, the unlocking piece slides and sets up in pressing groove, set up the unlocking groove that supplies the unlocking piece tip to insert on the lateral wall of locking piece, the unlocking groove is kept away from locking groove open-ended cell wall and is the unblock inclined plane, the unblock inclined plane is towards pressing groove.

Through adopting above-mentioned technical scheme, when separating control module and frame, press the unlocking piece, the tip of unlocking piece supports to press on the unlocking inclined plane to the tip of drive locking piece is received in the flexible groove, until the tip of locking piece shifts out the locking groove, can take out the spread groove with the locking plate this moment, thereby makes control module and frame separation. So set up, the control module of being convenient for separates with the frame.

Optionally, the control module comprises a control mechanism, a permanent magnet mechanism and a switching-on/off mechanism, wherein the switching-on/off mechanism comprises a pipe rack and a vacuum switch tube arranged on the pipe rack, a fixed contact of the vacuum switch tube is abutted against a connecting end, the permanent magnet mechanism comprises a mounting frame and a magnetic cylinder arranged on the mounting frame, a connecting shaft of the magnetic cylinder is connected with a movable contact of the vacuum switch tube, and the control mechanism is used for controlling the movable iron core of the magnetic cylinder to move;

the device comprises a magnetic cylinder, a vacuum switch tube, a push rod, a forced brake separating mechanism, a push assembly and a push assembly, wherein the forced brake separating mechanism comprises the push assembly and the push rod, the push rod is positioned on one side of the movable iron core of the magnetic cylinder, which is close to the vacuum switch tube, the push rod is arranged on the cylinder body of the magnetic cylinder in a sliding manner, the end part of the push rod stretches into the cylinder body of the magnetic cylinder and is in interference with the movable iron core, and the push assembly is used for driving the push rod to move towards a direction away from the vacuum switch tube.

Through adopting above-mentioned technical scheme, when closing a floodgate, through control mechanism control magnetic cylinder to make the movable iron core of magnetic cylinder move to the direction that is close to the vacuum switch tube, the movable iron core of magnetic cylinder drives the connection axial of magnetic cylinder and is close to the direction removal of vacuum switch tube, in order to make the movable contact of vacuum switch tube contradict with the static contact of vacuum switch tube. When the switch is opened, the magnetic cylinder is controlled by the control mechanism, so that the movable iron core of the magnetic cylinder moves in the direction away from the vacuum switch tube, the movable iron core of the magnetic cylinder drives the connecting shaft of the magnetic cylinder to move in the direction away from the vacuum switch tube, and the movable contact of the vacuum switch tube moves, so that the movable contact of the vacuum switch tube and the fixed contact of the vacuum switch tube are not adhered.

When the circuit connected with the feed switch is overloaded and short-circuited to cause the adhesion of the moving contact of the vacuum switch tube and the static contact of the vacuum switch tube or when the feed switch is in other emergency states to cause the adhesion of the moving contact of the vacuum switch tube and the static contact of the vacuum switch tube, the pushing component drives the pushing rod to move away from the vacuum switch tube, the pushing rod is pressed on the moving iron core of the magnetic cylinder and drives the moving iron core of the magnetic cylinder to move away from the vacuum switch tube, and the moving iron core of the magnetic cylinder drives the moving contact of the vacuum switch tube to move away from the connecting end through the connecting shaft of the magnetic cylinder so as to enable the moving contact of the vacuum switch tube and the static contact of the vacuum switch tube to relatively move, even if the moving contact of the vacuum switch tube and the static contact of the vacuum switch tube are not adhered, then the vacuum switch tube can be driven to break through the magnetic cylinder. Through the structure, when the movable contact of the vacuum switch tube is adhered to the fixed contact of the vacuum switch tube due to the fact that the feed switch is in an emergency state, the switch can still be switched off, so that the situation that internal electric elements are further damaged due to the fact that the feed switch is in the emergency state for a long time is avoided as much as possible, and the service life and the safety performance of the feed switch are effectively guaranteed.

Optionally, force the brake mechanism of separating brake still includes linkage subassembly, linkage subassembly is including sliding the guide rail that sets up on permanent magnetism mechanism, pushing component and guide rail all are located the side that the catch bar is close to the link, pushing component includes swing cam and connecting pin, just the swing cam is kept away from the tip of moving the iron core with the catch bar and is contradicted, swing cam's one end articulates on the cylinder body, waist type groove has been seted up on swing cam's the lateral wall of the other end, the connecting pin slides and sets up in the waist type groove and the connecting pin rotates to set up on the guide rail.

By adopting the technical scheme, when the movable contact of the vacuum switch tube and the fixed contact of the vacuum switch tube are adhered due to the fact that the feed switch is in an emergency state, the guide rail is slid, and the connecting pin is slidably arranged in the waist-shaped groove and rotatably arranged on the guide rail, so that the end part of the swing cam, which is hinged with the cylinder body, swings. The swing cam is propped against the push rod and drives the push rod to move towards the direction of the movable iron core close to the magnetic cylinder, so that the movable iron core of the magnetic cylinder moves towards the direction far away from the vacuum switch tube, and the movable iron core of the magnetic cylinder drives the movable contact of the vacuum switch tube to move through the connecting shaft of the magnetic cylinder. The magnetic cylinder is provided with a plurality of groups of pushing components, the pushing rods are correspondingly arranged on the magnetic cylinders, the magnetic cylinders are correspondingly provided with the plurality of groups of pushing components, and the forced brake separating operation can be carried out on the movable iron cores of the plurality of groups of magnetic cylinders at the same time, so that the convenience and the operability of the forced brake separating operation are further improved.

Optionally, the linkage subassembly still includes the action bars that rotate the setting on the automobile body, slide the setting on the automobile body along guide rail slip direction the gangbar, set up the linkage spare on the gangbar and connect the linkage wane on the action bars, the axial of action bars staggers with the slip direction of guide rail, the linkage hole has been seted up on the linkage wane, the gangbar slides and sets up in the linkage hole, the linkage spare is located the one side that the linkage wane is close to the guide rail, just the tip of linkage spare is located the travel path of linkage wane.

Through adopting above-mentioned technical scheme, when operating the guide rail, rotate the action bars, the action bars drive linkage wane and rotate to the tip of drive linkage wane moves to the direction that is close to the guide rail, until the linkage wane supports to press on the linkage piece, and the action bars slides in the linkage hole this moment. Along with the continuous rotation of action bars, linkage wane passes through the direction removal of linkage piece drive gangbar to being close to the guide rail, and the gangbar removes to contradict and promote the guide rail and remove with the guide rail. Because the axial direction of the operating rod is staggered with the sliding direction of the guide rail, on one hand, the rotating force can be converted into direct power, the control action of the guide rail during operation is reduced, and on the other hand, the operation direction can be changed, so that the guide rail can be operated and adjusted.

Optionally, the forced brake separating mechanism further comprises a control assembly, the control assembly comprises a control knob rotatably arranged on the shell, a matching block connected to the control knob and an inserting block connected to the control knob and connected to the control rod, the matching block is provided with a slot for inserting and sliding the inserting block, and the slot extends along the sliding direction of the moving mechanism;

when the end part of the vacuum switch tube is inserted into the connecting end, the end part of the insert block is inserted into the slot, and the operating rod is coaxial with the control knob.

Through adopting above-mentioned technical scheme, when loading into the casing with control module, through removing the frame in order to drive control module and remove, the frame drives the linkage subassembly and removes, action bars and inserted block along with the frame, the tip of inserted block inserts in the slot and slides in the slot, until inserted block and action bars remove to action bars and control knob coaxial. At this time, the operation knob can be rotated to drive the matching block to rotate, and the matching block drives the operation rod to move through the insertion block.

Through the structure, when a control module is installed into the shell by a worker, the cooperation of the plug block and the slot can be realized, so that the worker can perform forced opening operation outside the shell, namely, the vacuum switch tube is driven to move so that the vacuum switch tube is not adhered with the connecting end.

Optionally, the control assembly further includes a retaining spring, one end of the retaining spring is connected to the matching block, the other end of the retaining spring is disposed on the housing, and when the retaining spring is in a natural state, an extending direction of the slot is consistent with a sliding direction of the moving mechanism.

By adopting the technical scheme, when the control knob is rotated, the retaining spring stretches. After the force applied to the control knob is removed, the retaining spring is restored to drive the control knob to restore, so that the linkage assembly and the pushing assembly restore. By the arrangement, on one hand, automatic resetting of the control knob is realized, and on the other hand, the matching block is helped to keep the extending direction of the slot, so that the extending direction of the slot is aligned with the end part of the plug block when the control module is installed.

Optionally, still include setting up the electrical component in the casing and rotate the break-make axle that sets up on electrical component, it is provided with the break-make knob to rotate on the casing, the break-make knob is connected on the break-make axle.

Through adopting above-mentioned technical scheme, compare in that the staff need through spanner side can operate the rotation to the break-make axle, through add the break-make knob on the break-make axle for the staff directly manually rotates the break-make knob and can operate the break-make axle, has improved the simplicity of break-make axle operation.

Optionally, a limiting mechanism is arranged on the shell, the limiting mechanism comprises a limiting rod arranged on the shell in a sliding manner and a limiting block connected to the front door, a yielding groove for inserting the end part of the limiting rod is formed in the side wall of the on-off knob, a limiting groove for inserting the end part of the limiting rod is formed in the limiting block, and the extending direction of the limiting groove is staggered with the opening direction of the front door;

when the on-off knob rotates to the state that the electrical component is powered off, the abdication groove is aligned with the limit rod and the limit groove; when one end of the limiting rod is inserted into the abdication groove, the other end of the limiting rod is pulled out of the limiting groove; when one end of the limiting rod moves out of the abdication groove, the other end of the limiting rod is inserted into the limiting groove.

Through adopting above-mentioned technical scheme, when the circular telegram, need slide the gag lever post earlier to make the one end of gag lever post shift out the groove of stepping down, the other end of gag lever post inserts the spacing groove, because the extending direction in spacing groove staggers with the direction of opening of qianmen, thereby has restricted the qianmen and has opened. When the front door cannot be opened, the power can be applied, so that the safety of the feed switch is improved. Before the front door is opened, the on-off knob is required to be turned to enable the electric assembly to be powered off, and the abdication groove is aligned with the limit rod and the limit groove. Then, the limiting rod can be slid, so that one end of the limiting rod is inserted into the abdication groove, and the other end of the limiting rod is moved out of the limiting groove, and the front door can be normally opened. Namely, after power is off, the front door can be normally opened, so that the safety of the feed switch is further improved.

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

1. compared with a direct movement control module, the control module is moved by the moving mechanism, so that the convenience of disassembling and assembling the control module is improved;

2. through the forced opening mechanism, when the movable contact of the vacuum switch tube and the fixed contact of the vacuum switch tube are adhered due to the fact that the feed switch is in an emergency state, a worker can control the vacuum switch tube outside the shell, so that the movable contact of the vacuum switch tube can move relative to the fixed contact of the vacuum switch tube, the magnetic cylinder can drive the magnetic cylinder to be separated from the fixed contact of the vacuum switch tube, and the feed switch has an emergency opening function, and improves the safety performance of the feed switch.

Drawings

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

Fig. 2 is a schematic diagram showing the structure of the electrical component and the moving mechanism according to the embodiment of the present application.

FIG. 3 is a schematic partial cross-sectional view of a male connection member in accordance with an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a salient control module in an embodiment of the present application.

Fig. 5 is a schematic structural view of a salient permanent magnet mechanism in an embodiment of the present application.

FIG. 6 is a schematic diagram showing the structure of the forced opening mechanism according to the embodiment of the present application.

Fig. 7 is a schematic view showing the structure of the push rod in the embodiment of the present application.

Fig. 8 is an enlarged schematic view at a in fig. 6.

Reference numerals illustrate:

1. a housing; 2. a front door; 3. a connection end; 4. a moving mechanism; 41. a frame; 411. a connecting groove; 42. a wheel; 43. a vehicle rail; 44. a connection assembly; 441. a connecting seat; 4411. a telescopic slot; 4412. a pressing groove; 442. a locking block; 4421. a locking ramp; 4422. unlocking grooves; 4423. unlocking the inclined plane; 443. a locking spring; 444. unlocking the block; 5. a control module; 51. a control mechanism; 511. a connecting plate; 512. a locking plate; 5121. a locking groove; 52. a permanent magnet mechanism; 521. a mounting frame; 522. a magnetic cylinder; 53. a switching-on and switching-off mechanism; 531. a pipe rack; 532. a vacuum switching tube; 6. a forced brake separating mechanism; 61. a push rod; 62. a pushing assembly; 621. a swing cam; 6211. a waist-shaped groove; 622. a connecting pin; 63. a linkage assembly; 631. an operation lever; 632. a linkage rod; 6321. a head; 6322. a stem portion; 633. a shaft sleeve; 634. a linkage rocker; 6341. a linkage hole; 635. a support block; 636. a linkage member; 637. a guide rail; 638. a return spring; 64. a manipulation assembly; 641. a control knob; 642. a mating block; 6421. a slot; 643. inserting blocks; 644. a holding spring; 7. an electrical component; 71. an on-off shaft; 72. an on-off knob; 721. a relief groove; 8. a limiting mechanism; 81. a limit seat; 82. a limit rod; 83. a limiting block; 831. and a limit groove.

Detailed Description

The application is described in further detail below with reference to fig. 1-8.

The embodiment of the application discloses a mining explosion-proof and intrinsically safe vacuum feed switch of a low-voltage permanent magnet mechanism.

Referring to fig. 1 and 2, the mining explosion-proof and intrinsically safe low-voltage permanent magnet mechanism vacuum feed switch comprises a shell 1 provided with an inner cavity, a front door 2 for opening and closing the inner cavity of the shell 1, a plurality of connecting ends 3 fixed in the shell 1, a moving mechanism 4 arranged in the shell 1 in a sliding manner, a control module 5 arranged on the moving mechanism 4 and a forced opening mechanism 6.

Referring to fig. 1, a front door 2 is rotatably provided on a housing 1 and is capable of sliding on the housing 1 in a vertical direction. When the front door 2 is opened, the front door 2 needs to be moved upwards before the front door 2 can be opened in a rotating way.

Referring to fig. 1 and 2, an electrical component 7 for controlling the power on/off of the power supply switch of the present application is fixed in a housing 1, an on/off shaft 71 is rotatably provided on the electrical component 7, and an end portion of the on/off shaft 71 penetrates outside the housing 1. The on-off knob 72 is rotatably arranged on the shell 1, the on-off knob 72 is sleeved and fixed on the on-off shaft 71, and the on-off shaft 71 can be driven to rotate by rotating the on-off knob 72.

Referring to fig. 1, a limiting mechanism 8 is provided on a housing 1, the limiting mechanism 8 includes a limiting seat 81, a limiting rod 82 and a limiting block 83, the limiting block 83 is integrally formed on a side wall of a front door 2, and a limiting groove 831 penetrates through the limiting block 83 along a horizontal direction. The limiting seat 81 is fixed on the outer wall of the shell 1, and the limiting block 83 and the on-off knob 72 are respectively located on two sides of the limiting seat 81. The limiting rod 82 penetrates through and is arranged on the limiting seat 81 in a sliding mode, the sliding direction of the limiting rod 82 is consistent with the extending direction of the limiting groove 831, the limiting rod 82 is aligned with the limiting groove 831, and the limiting groove 831 is used for inserting the end portion of the limiting rod 82. The sidewall of the on-off knob 72 is provided with a relief groove 721 for inserting the end of the limiting rod 82, and the on-off knob 72 can rotate until the relief groove 721 is aligned with the limiting groove 831.

Referring to fig. 1 and 2, the on-off knob 72 is turned to the electric component 7 to be powered off, so that when the power supply switch of the application is powered off, the yielding groove 721 is aligned with the limiting rod 82 and the limiting groove 831; when one end of the limiting rod 82 is inserted into the abdication groove 721, the other end limiting groove 831 of the limiting rod 82 is pulled out; when one end of the limiting rod 82 moves out of the relief groove 721, the other end of the limiting rod 82 is inserted into the limiting groove 831.

Referring to fig. 2, the moving mechanism 4 includes a frame 41, four wheels 42 rotatably provided on the frame 41, two symmetrically provided rails 43, and two sets of connection assemblies 44 connecting the control module 5 and the frame 41. The rails 43 are fixed on the bottom wall of the inner cavity of the shell 1, and the two rails 43 are respectively positioned at two sides of the frame 41. Two of the wheels 42 are slidably disposed on one of the rails 43, and the remaining two wheels 42 are slidably disposed on the other rail 43.

Referring to fig. 3 and 4, a control module 5 is provided on the vehicle frame 41, and the control module 5 includes a control mechanism 51, a permanent magnet mechanism 52, and an opening/closing mechanism 53. A connecting plate 511 is fixed to a side wall of the control mechanism 51, a locking plate 512 extending in the horizontal direction is fixed to the connecting plate 511, and a locking groove 5121 is formed in the locking plate 512 in a vertical direction. The side wall of the frame 41 is provided with a connecting slot 411 extending along the horizontal direction, and the connecting slot 411 is used for inserting the locking plate 512.

Referring to fig. 3 and 4, the connection assembly 44 includes a connection seat 441, a locking block 442, a locking spring 443, and an unlocking block 444, the connection seat 441 is fixed on the frame 41, a telescopic slot 4411 extending along a vertical direction is formed on a top wall of the connection seat 441, a pressing slot 4412 communicating with the telescopic slot 4411 is formed on a side wall of the connection seat 441, and an extending direction of the pressing slot 4412 is perpendicular to an extending direction of the telescopic slot 4411. The locking block 442 is slidably disposed in the telescopic slot 4411, the locking spring 443 is disposed in the telescopic slot 4411, and both ends of the locking spring 443 respectively abut against the locking block 442 and the bottom of the telescopic slot 4411. When the locking spring 443 is in a natural state, the end of the locking block 442 extends out of the telescopic slot 4411, and the locking slot 5121 is used for inserting the end of the locking block 442. The locking block 442 is provided with a locking slope 4421 at an end thereof remote from the locking spring 443, the locking slope 4421 facing the connection slot 411.

Referring to fig. 3, the unlocking piece 444 is slidably provided in the pressing groove 4412, and the unlocking piece 444 penetrates through a side plate of the frame 41 provided with the connection groove 411 and is slidably provided on the frame 41. The side wall of the locking block 442 facing the telescopic slot 4411 is provided with an unlocking slot 4422, and the unlocking slot 4422 is used for inserting the end part of the unlocking block 444. The end surface of the unlocking groove 4422, which is far from the opening of the locking groove 5121, is an unlocking inclined surface 4423, and the unlocking inclined surface 4423 faces the pressing groove 4412.

Referring to fig. 3 and 4, when the control module 5 is mounted on the frame 41, the control module 5 is first placed on the frame 41, and then the control module 5 is moved relative to the frame 41, so that the locking plate 512 is inserted into the connection slot 411 and presses against the locking inclined surface 4421, and the locking plate 512 pushes the locking block 442 to be received in the telescopic slot 4411 until the locking slot 5121 is aligned with the telescopic slot 4411. At this time, the locking block 442 is restored and its end is inserted into the locking groove 5121 by the locking spring 443 to restrict the locking plate 512 from being withdrawn out of the locking groove 5121, thereby connecting the control module 5 to the vehicle frame 41. When the control module 5 is separated from the frame 41, the unlocking block 444 is pressed against the unlocking inclined plane 4423 to drive the locking block 442 to be completely retracted into the telescopic slot 4411, and at this time, the control module 5 can be moved so that the locking block 442 is pulled out of the connecting slot 411.

Referring to fig. 4 and 5, the permanent magnet mechanism 52 includes a mounting frame 521 and a plurality of magnetic cylinders 522 fixed on the mounting frame 521, and the magnetic cylinders 522 are well known in the art and will not be described herein. The mounting frame 521 is fixedly connected with the control mechanism 51, and the control mechanism 51 is used for controlling the moving iron core of the magnetic cylinder 522 to move, namely controlling the movement of the connecting shaft of the magnetic cylinder 522.

Referring to fig. 5, the opening and closing mechanism 53 includes a pipe frame 531 fixed to the mounting frame 521 and a plurality of vacuum switching tubes 532 provided to the pipe frame 531, and porcelain tubes of the respective vacuum switching tubes 532 are fixed to the pipe frame 531. The number of the vacuum switch tubes 532 corresponds to the number of the magnetic cylinders 522, and the positions of the vacuum switch tubes 532 are respectively corresponding to the different magnetic cylinders 522. The vacuum switch tubes 532 are located on one side of the magnetic cylinders 522 close to the connecting ends 3, the fixed contacts of the vacuum switch tubes 532 are respectively inserted into different connecting ends 3, and the connecting shafts of the magnetic cylinders 522 are respectively and fixedly connected with the moving contacts of different vacuum switch tubes 532.

Referring to fig. 4 and 5, after the control module 5 is installed in the housing 1 by the moving mechanism 4, when the switch is closed, the connecting shaft of the magnetic cylinder 522 is driven by the moving core of the magnetic cylinder 522 to move in a direction of approaching the connecting end 3, and the connecting shaft of the magnetic cylinder 522 drives the moving contact of the vacuum switching tube 532 to move in a direction of approaching the connecting end 3, so that the moving contact of the vacuum switching tube 532 abuts against the fixed contact of the vacuum switching tube 532. When the switch is opened, the movable iron core of the magnetic cylinder 522 drives the connecting shaft of the magnetic cylinder 522 to move in the direction away from the connecting end 3, and the connecting shaft of the magnetic cylinder 522 drives the movable contact of the vacuum switch tube 532 to move in the direction away from the connecting end 3, so that the movable contact of the vacuum switch tube 532 is separated from the fixed contact of the vacuum switch tube 532.

Referring to fig. 6 and 7, the forced opening mechanism 6 includes a plurality of push rods 61, a plurality of groups of push assemblies 62, a linkage assembly 63, and a control assembly 64, and the number of the push rods 61 and the push assemblies 62 is identical to the number of the magnetic cylinders 522.

Referring to fig. 7 and 8, the link assembly 63 includes an operation lever 631, a link lever 632, a shaft sleeve 633, a link rocker 634, a support 635, a link 636, a guide rail 637, and a return spring 638, the operation lever 631 is rotatably disposed on the frame 41, an axis of the operation lever 631 extends in a horizontal direction, and an axial direction of the operation lever 631 is perpendicular to a moving direction of the frame 41. One end of the linkage rocker 634 is fixed on the operation rod 631, and a linkage hole 6341 penetrating the linkage rocker 634 is formed in the linkage rocker 634.

Referring to fig. 4, 7 and 8, the link rod 632 is vertically penetrating and slidably disposed on the frame 41, and the link rod 632 includes a head portion 6321 and a rod portion 6322 having one end fixed to the head portion 6321, the head portion 6321 having a larger diameter than the rod portion 6322. The sleeve 633 is fixed to the frame 41, the lever 6322 is slidably disposed on the sleeve 633, the head 6321 has a diameter larger than an inner diameter of the sleeve 633, and the head 6321 is located on a side of the sleeve 633 adjacent to the rail 637. The guide rail 637 is located above the head 6321, and the guide rail 637 is slidably provided on the mounting bracket 521 in the vertical direction. The return spring 638 is located above the guide rail 637, and the return spring 638 is extended and contracted in the vertical direction, and both ends of the return spring 638 abut against the guide rail 637 and the mounting bracket 521, respectively, to apply a downward return force to the guide rail 637.

Referring to fig. 7 and 8, the lever portion 6322 is slidably disposed in the linkage hole 6341, and the bottom end of the lever portion 6322 protrudes below the linkage rocker 634 through the linkage hole 6341. The bottom end of the rod portion 6322 is fixed with a supporting block 635, and the cross-sectional width of the supporting block 635 is larger than the aperture of the linkage hole 6341. The link 636 is located at a side of the link rocker 634 near the guide rail 637, and an end of the link 636 is located on a moving path of the link rocker 634. In the embodiment of the present application, the linkage 636 is a clip and the linkage 636 is sleeved and fixed on the rod 6322, and in other embodiments, the linkage 636 may be a pin shaft inserted on the rod 6322.

Referring to fig. 7 and 8, when the driving rail 637 moves, the operation lever 631 is rotated, the operation lever 631 drives the linkage rocker 634 to rotate, the linkage rocker 634 presses against the linkage 636 and drives the linkage 636 to move upward, thereby driving the linkage rod 632 to move upward, the linkage rod 632 pushes the rail 637 upward, and the return spring 638 is compressed. After the force applied to the lever 631 is removed, the guide rail 637 is returned downward by gravity and the return spring 638. The linkage rod 632 moves downwards to reset under the action of gravity, the linkage rocker 634 drives the operation rod 631 to rotate under the action of gravity until the linkage rocker 634 is in contact with the support block 635, and the support block 635 limits the operation rod 631 to continue to rotate through the linkage rocker 634 so as to reset the operation rod 631 to an initial angle.

Referring to fig. 6 and 7, the steering assembly 64 includes a steering knob 641, a mating block 642, an insert 643, and a retaining spring 644.

Referring to fig. 1, the jog dial 641 is rotatably disposed on the housing 1, and an end of the jog dial 641 is located outside the housing 1 so that a worker can maneuver the jog dial 641 outside the housing 1.

Referring to fig. 6 and 7, the insert 643 is rotatably disposed in the housing 1, and the insert 643 is fixedly connected to the control knob 641, and the insert 6421 penetrates through the mating block 642. One end of the holding spring 644 is fixed to the engagement block 642, and the other end of the holding spring 644 is fixed to the housing 1, and when the holding spring 644 is in a natural state, the extending direction of the slot 6421 coincides with the sliding direction of the moving mechanism 4.

Referring to fig. 5 and 7, the insert 643 is fixed at one end of the lever 631, and when the linkage rocker 634 abuts against the support 635 and keeps the spring 644 in a natural state, the end of the insert 643 is aligned with the slot 6421, and the slot 6421 is used for inserting and sliding the insert 643. When the end of the vacuum interrupter 532 is inserted into the connection terminal 3, the end of the insert 643 is inserted into the slot 6421, and the lever 631 is coaxial with the jog dial 641.

Referring to fig. 5 and 7, when the control module 5 is installed, the carriage 41 is pushed into the housing 1, and the insert 643 moves with the carriage 41 and is inserted into the slot 6421 until the lever 631 moves coaxially with the jog dial 641. At this time, the operation knob 641 is turned, and the operation lever 631 is driven to rotate by the engagement block 642 and the insertion block 643, thereby controlling the guide rail 637.

Referring to fig. 5 and 7, the number of the pushing assemblies 62 and the pushing rods 61 is identical to that of the magnetic cylinders 522, and the positions of the pushing assemblies 62 and the pushing rods 61 are set corresponding to the magnetic cylinders 522. Each push rod 61 is respectively arranged on the cylinder bodies of different magnetic cylinders 522, the push rods 61 are arranged on the cylinder bodies of the magnetic cylinders 522 in a sliding manner along the moving direction of the movable iron cores, one ends of the push rods 61 extend into the cylinder bodies of the magnetic cylinders 522 and are in contact with the movable iron cores of the magnetic cylinders 522, and the push rods 61 are positioned on one side of the movable iron cores of the magnetic cylinders 522, which is close to the connecting end 3.

Referring to fig. 5 and 7, each pushing assembly 62 is vertically arranged on the guide rail 637, and each pushing assembly 62 and the guide rail 637 are located on a side of the pushing rod 61 near the connection end 3. The pushing assembly 62 is used for driving the pushing rod 61 to move away from the vacuum switch tube 532, and the pushing assembly 62 includes a swing cam 621 and a connecting pin 622. One end of the swing cam 621 is hinged to the cylinder body of the adjacent magnetic cylinder 522 and abuts against the end of the push rod 61 close to the vacuum switching tube 532, the other end of the swing cam 621 is provided with a waist-shaped groove 6211, the connecting pin 622 is slidably disposed in the waist-shaped groove 6211, and the connecting pin 622 is rotatably disposed on the guide rail 637.

Referring to fig. 5 and 7, when guide rail 637 is moved upward, swing cam 621 swings by connecting pin 622, the end of swing cam 621 abutting against push rod 61 drives push rod 61 to move away from connecting end 3, and push rod 61 drives the moving core of magnetic cylinder 522 to move away from connecting end 3, so that the connecting axis of magnetic cylinder 522 moves away from connecting end 3.

The embodiment of the application discloses a mining explosion-proof and intrinsically safe vacuum feed switch of a low-voltage permanent magnet mechanism, which is implemented by the following principle: when the control module 5 is installed, the frame 41 and the control module 5 are pushed to move towards the direction approaching the connecting end 3, and the wheels 42 and the rails 43 rotate to facilitate the movement of the frame 41 and the control module 5. By the design, the convenience in assembling and disassembling the control module 5 is improved.

When the moving contact of the vacuum switch tube 532 is adhered to the fixed contact of the vacuum switch tube 532 due to the emergency such as overload or overvoltage of the feed switch, the control knob 641 is rotated, and the matching block 642, the insert 643 and the operation rod 631 are rotated together, so that the linkage rocker 634 is driven to rotate. The linkage rocker 634 drives the linkage rod 632 to move up and press against the guide rail 637 via the linkage 636 to drive the guide rail 637 to move up. The guide rail 637 drives each connecting pin 622 upward, and the connecting pins 622 slide in the waist-shaped grooves 6211 to drive the swing cams 621 to rotate. The swing cam 621 drives the pushing block to move in the direction away from the connecting end 3, so that the movable iron core of the magnetic cylinder 522 moves in the direction away from the connecting end 3, and the movable iron core of the magnetic cylinder 522 drives the movable contact of the vacuum switching tube 532 to move through the connecting shaft of the magnetic cylinder 522, so that the movable contact of the vacuum switching tube 532 is not adhered with the fixed contact of the vacuum switching tube 532. Thus, the movable contact of the vacuum interrupter 532 can be normally driven by the magnetic cylinder 522.

After the force applied to the operation knob is removed, the guide rail 637 is restored downward by gravity and the restoring spring 638 to restore the swing cam 621. The linkage rod 632 moves downwards to reset under the action of gravity, the control knob 641 and the matching block 642 reset under the action of the retaining spring 644, the matching block 642 drives the insert block 643 to rotate to reset through the slot 6421, and the insert block 643 drives the operation shaft and the linkage rocker 634 to reset.

Through the structure, when the moving contact of the vacuum switch tube 532 is adhered to the fixed contact of the vacuum switch tube 532, the moving contact of the vacuum switch tube 532 and the fixed contact of the vacuum switch tube 532 can be moved relatively by operating with the outside of the shell 1, namely, the moving contact of the vacuum switch tube 532 and the fixed contact of the vacuum switch tube 532 are not adhered any more, so that the magnetic cylinder 522 can normally drive the moving contact of the vacuum switch tube 532 to move, and the safety performance of the feed switch of the application is ensured.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (7)

1. The utility model provides a mining flameproof and intrinsically safe type low pressure permanent magnetism mechanism vacuum feed switch, is including casing (1) that is equipped with the inner chamber, fix link (3) in casing (1), set up control module (5) in casing (1) and be used for opening and close casing (1) inner chamber open-ended qianmen (2), its characterized in that: the device also comprises a moving mechanism (4) which is arranged in the shell (1) in a sliding way, wherein the moving mechanism (4) comprises a frame (41) and wheels (42) arranged on the frame (41), and the control module (5) is arranged on the frame (41);

the control module (5) comprises a control mechanism (51), a permanent magnet mechanism (52) and a switching-on/switching-off mechanism (53), wherein the switching-on/switching-off mechanism (53) comprises a pipe frame (531) and a vacuum switch tube (532) arranged on the pipe frame (531), a fixed contact of the vacuum switch tube (532) is abutted against the connecting end (3), the permanent magnet mechanism (52) comprises a mounting frame (521) and a magnetic cylinder (522) arranged on the mounting frame (521), a connecting shaft of the magnetic cylinder (522) is connected with a moving contact of the vacuum switch tube (532), and the control mechanism (51) is used for controlling the moving iron core of the magnetic cylinder (522) to move;

the device comprises a magnetic cylinder (522), a vacuum switch tube (532) and a forced brake separating mechanism (6), wherein the forced brake separating mechanism (6) comprises a pushing component (62) and a pushing rod (61), the pushing rod (61) is positioned on one side of a movable iron core of the magnetic cylinder (522) close to the vacuum switch tube (532), the pushing rod (61) is arranged on a cylinder body of the magnetic cylinder (522) in a sliding manner, the end part of the pushing rod (61) stretches into the cylinder body of the magnetic cylinder (522) and is in contact with the movable iron core, and the pushing component (62) is used for driving the pushing rod (61) to move in a direction far away from the vacuum switch tube (532);

the forced brake separating mechanism (6) further comprises a linkage assembly (63), the linkage assembly (63) comprises a guide rail (637) which is arranged on the permanent magnet mechanism (52) in a sliding mode, the pushing assembly (62) and the guide rail (637) are both located on one side, close to the connecting end (3), of the pushing rod (61), the pushing assembly (62) comprises a swinging cam (621) and a connecting pin (622), the swinging cam (621) is in contact with the end portion, far away from the movable iron core, of the pushing rod (61), one end of the swinging cam (621) is hinged to the cylinder body, a waist-shaped groove (6211) is formed in the side wall of the other end of the swinging cam (621), the connecting pin (622) is arranged in the waist-shaped groove (6211) in a sliding mode, and the connecting pin (622) is arranged on the guide rail (637) in a rotating mode.

The linkage assembly (63) further comprises an operation rod (631) arranged on the car body in a rotating mode, a linkage rod (632) arranged on the car body in a sliding mode along the sliding direction of the guide rail (637), a linkage piece (636) arranged on the linkage rod (632) and a linkage rocker (634) connected to the operation rod (631), the axial direction of the operation rod (631) is staggered with the sliding direction of the guide rail (637), a linkage hole (6341) is formed in the linkage rocker (634), the linkage rod (632) is arranged in the linkage hole (6341) in a sliding mode, the linkage piece (636) is located on one side, close to the guide rail (637), of the linkage rocker (634), and the end portion of the linkage piece (636) is located on the moving path of the linkage rocker (634).

2. The mining explosion-proof and intrinsically safe low-voltage permanent magnet mechanism vacuum feed switch of claim 1, wherein: the control module (5) is provided with a connecting plate (511), the connecting plate (511) is provided with a locking plate (512), the frame (41) is provided with a connecting groove (411) for inserting the locking plate (512), and the locking plate (512) is provided with a locking groove (5121);

the moving mechanism (4) further comprises a connecting assembly (44), the connecting assembly (44) comprises a connecting seat (441), a locking block (442) and a locking spring (443), a telescopic groove (4411) is formed in the side wall of the connecting seat (441), the locking block (442) is arranged in the telescopic groove (4411) in a sliding mode, the locking groove (5121) is used for allowing the end portion of the locking block (442) to be inserted, the locking spring (443) is connected onto the locking block (442), a locking inclined surface (4421) is arranged on the end portion, far away from the bottom of the telescopic groove (4411), of the locking block (442) and faces the connecting groove (411), and when the locking spring (443) is in a natural state, the end portion of the locking block (442) extends out of the telescopic groove (4411).

3. The mining explosion-proof and intrinsically safe low-voltage permanent magnet mechanism vacuum feed switch of claim 2, wherein: the connecting assembly (44) further comprises an unlocking block (444), a pressing groove (4412) perpendicular to the telescopic groove (4411) in the extending direction is formed in the side wall of the connecting seat (441), the pressing groove (4412) is communicated with the telescopic groove (4411), the unlocking block (444) is arranged in the pressing groove (4412) in a sliding mode, an unlocking groove (4422) for inserting the end portion of the unlocking block (444) is formed in the side wall of the locking block (442), the groove wall, away from the opening of the locking groove (5121), of the unlocking groove (4422) is an unlocking inclined surface (4423), and the unlocking inclined surface (4423) faces the pressing groove (4412).

4. The mining explosion-proof and intrinsically safe low-voltage permanent magnet mechanism vacuum feed switch of claim 1, wherein: the forced opening mechanism (6) further comprises a control assembly (64), the control assembly (64) comprises a control knob (641) rotatably arranged on the shell (1), a matching block (642) connected to the control knob (641) and an inserting block (643) connected to the control rod and connected to the control knob (641), the matching block (642) is provided with a slot (6421) for inserting and sliding the inserting block (643), and the slot (6421) extends along the sliding direction of the moving mechanism (4);

when the end part of the vacuum switch tube (532) is inserted into the connecting end (3), the end part of the insert block (643) is inserted into the slot (6421), and the operating rod (631) is coaxial with the control knob (641).

5. The mining explosion-proof and intrinsically safe low-voltage permanent-magnet mechanism vacuum feed switch of claim 4, wherein: the control assembly (64) further comprises a retaining spring (644), one end of the retaining spring (644) is connected to the matching block (642), the other end of the retaining spring (644) is arranged on the shell (1), and when the retaining spring (644) is in a natural state, the extending direction of the slot (6421) is consistent with the sliding direction of the moving mechanism (4).

6. The mining explosion-proof and intrinsically safe low-voltage permanent magnet mechanism vacuum feed switch of claim 1, wherein: the electric power generation device is characterized by further comprising an electric component (7) arranged in the shell (1) and an on-off shaft (71) rotatably arranged on the electric component (7), wherein an on-off knob (72) is rotatably arranged on the shell (1), and the on-off knob (72) is connected to the on-off shaft (71).

7. The mining explosion-proof and intrinsically safe low-voltage permanent-magnet mechanism vacuum feed switch of claim 6, wherein: the novel door is characterized in that a limiting mechanism (8) is arranged on the shell (1), the limiting mechanism (8) comprises a limiting rod (82) arranged on the shell (1) in a sliding mode and a limiting block (83) connected to the front door (2), a yielding groove (721) for inserting the end portion of the limiting rod (82) is formed in the side wall of the on-off knob (72), a limiting groove (831) for inserting the end portion of the limiting rod (82) is formed in the limiting block (83), and the extending direction of the limiting groove (831) is staggered with the opening direction of the front door (2);

when the on-off knob (72) rotates to the state that the electric component (7) is powered off, the yielding groove (721) is aligned with the limiting rod (82) and the limiting groove (831); when one end of the limiting rod (82) is inserted into the yielding groove (721), the other end of the limiting rod (82) is pulled out of the limiting groove (831); when one end of the limiting rod (82) moves out of the yielding groove (721), the other end of the limiting rod (82) is inserted into the limiting groove (831).