CN117277095A - Low-voltage switch cabinet extraction structure - Google Patents
Low-voltage switch cabinet extraction structure Download PDFInfo
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- CN117277095A CN117277095A CN202311089837.3A CN202311089837A CN117277095A CN 117277095 A CN117277095 A CN 117277095A CN 202311089837 A CN202311089837 A CN 202311089837A CN 117277095 A CN117277095 A CN 117277095A
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- sliding rail
- low
- iron plate
- drawer
- permanent magnet
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- 238000000605 extraction Methods 0.000 title claims abstract description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 120
- 229910052742 iron Inorganic materials 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000000725 suspension Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 6
- 230000008093 supporting effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
- H02B1/34—Racks
- H02B1/36—Racks with withdrawable units
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/173—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal drawer type
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Drawers Of Furniture (AREA)
Abstract
The invention belongs to the technical field of low-voltage switch cabinets, and particularly relates to a low-voltage switch cabinet extraction structure, which comprises a low-voltage switch cabinet body and drawers, wherein the drawers are inserted into one side of the low-voltage switch cabinet body through sliding rail mechanisms arranged on two sides of the drawers; the sliding rail mechanism comprises an outer sliding rail and an inner sliding rail which are clamped with each other; the bottom of the inner side of the outer sliding rail is fixedly provided with a permanent magnet, the top of the inner side of the inner sliding rail is fixedly provided with an iron plate, the top of the iron plate is fixedly provided with an electromagnetic coil assembly, and the iron plate is magnetically connected with the permanent magnet; the positioning support block is movably supported with the inner side surface of the outer slide rail; the iron plate is connected with the permanent magnet in a magnetic attraction mode, and the outer sliding rail and the inner sliding rail are fixedly installed. The invention can realize that the friction force of the drawer is reduced in the drawing process, the drawing resistance is small, and the abrasion of parts is not easy to cause.
Description
Technical Field
The invention belongs to the technical field of low-voltage switch cabinets, and particularly relates to a low-voltage switch cabinet extraction structure.
Background
The low-voltage switch cabinet is an electric device, which is suitable for power plants, petroleum, chemical industry, metallurgy, textile, high-rise buildings and other industries, and is used for power transmission, power distribution and electric energy conversion. The electric power system has the main functions of opening and closing, controlling and protecting electric equipment in the process of generating, transmitting, distributing and converting electric energy of the electric power system.
The low-voltage switch cabinet extraction structure is an electrical device, is a form of the low-voltage switch cabinet, the main structure of the low-voltage switch cabinet is composed of a plurality of drawers, each drawer is provided with an independent power supply and a control system, and can independently complete control and protection functions.
Problems of the prior art:
the drawer sliding rail of the low-voltage switch cabinet extraction structure has a plurality of types, and common types include roller type, steel ball type, hidden bottom supporting drawer sliding rail, horse riding drawer sliding rail and the like, and the sliding rails have advantages and disadvantages, and the sliding rails adopt supporting sliding structures which are in direct contact in the sliding process, are easy to generate friction in the sliding process, generate resistance when the drawer is used, and are easy to wear after long-time use.
Disclosure of Invention
The invention aims to provide a low-voltage switch cabinet extraction structure which can reduce friction force in the drawer extraction process, has small extraction resistance and is not easy to cause abrasion of parts.
The technical scheme adopted by the invention is as follows:
a low-voltage switch cabinet extraction structure comprises a low-voltage switch cabinet body;
the drawer is inserted into one side of the low-voltage switch cabinet body through sliding rail mechanisms arranged on two sides of the drawer;
the sliding rail mechanism comprises an outer sliding rail and an inner sliding rail which are clamped with each other;
the bottom of the inner side of the outer sliding rail is fixedly provided with a permanent magnet, the top of the inner side of the inner sliding rail is fixedly provided with an iron plate, the top of the iron plate is fixedly provided with an electromagnetic coil assembly, and the iron plate is magnetically connected with the permanent magnet;
the positioning support block is movably supported with the inner side surface of the outer slide rail;
the outer sliding rail and the inner sliding rail are fixedly arranged;
the iron plate and the permanent magnet are magnetically repelled, the outer slide rail is connected with the inner slide rail in parallel in a suspending and sliding manner, one end of the inner slide rail slides to the inner side of the other end of the outer slide rail, the inner slide rail inclines to enable the positioning abutting block to tilt, and the positioning abutting block abuts against the inner side of the outer slide rail.
The inside level of low tension switchgear body is equipped with the bottom plate that is used for the butt drawer bottom, the inside both sides of low tension switchgear body are fixed with vertical side carrier plate, the installed part that interior rail side set up to through bolt and curb plate fixed mounting, outer rail side also is provided with the installed part, and through bolt and side carrier plate fixed mounting.
And a top clamping plate is welded on one side of the top of the inner slide rail, a ball is rotatably arranged between the top clamping plate and the inner slide rail, and the ball protrudes out of the upper surface of the top clamping plate and is movably abutted to the inner side of the outer slide rail.
The bottom outside the outer slide rail is welded with a bottom splint, a ball is rotatably installed between the bottom splint and the outer slide rail, and the surface of the ball protruding out of the bottom splint is movably abutted with the inner side of the inner slide rail.
The inner side of the bottom of the inner slide rail is fixed with a top block at one end deviating from the positioning supporting block, and a notch for accommodating balls is arranged in the middle of the top block.
And a plastic strip is fixedly arranged on one side of the top of the iron plate through a bolt, and the electromagnetic coil assembly is arranged in a mounting groove formed in the plastic strip.
The bottom of the inner side of the outer sliding rail is provided with a limiting strip, and the bottom of the permanent magnet is provided with a limiting groove matched with the limiting strip.
And a ball groove is formed in the connection position of the balls and the outer sliding rail and the inner sliding rail.
The electromagnetic coil assembly is internally provided with an iron core and a coil, the bottoms of the iron core and the coil are fixedly connected with an iron plate, wires outside the iron core and the coil are electrically connected with wire ends, and the wire ends penetrate through the inside of a spiral ring arranged on the side plate.
The lead end is electrically connected with a polarity conversion chip arranged in the drawer, and the polarity conversion chip is electrically connected with a power supply and a control system.
The invention has the technical effects that:
according to the invention, the iron plate and the permanent magnet realize magnetic attraction, so that the drawer is fixed, the forced extraction is avoided, the magnetic poles of the iron plate and the permanent magnet are opposite, the iron plate and the permanent magnet repel each other, the outer slide rail and the inner slide rail are suspended in parallel, and the operation knob handle at the moment rotates to indicate the moving position, so that the drawer can be pulled, and the iron plate and the permanent magnet are in a non-contact suspension state, so that friction is avoided, and abrasion is avoided.
According to the invention, after the drawer is pulled out, the relative positions between the iron plates and the permanent magnets are changed, and the weight of the drawer is added, so that the iron plates which are parallel to each other incline with the iron plates in the permanent magnets, and the positioning abutting block at one end of the inner sliding rail abuts against the inner side of the top of the outer sliding rail, so that the drawer can be obliquely fixed in any position in the low-voltage switch cabinet body, and the drawer can be prevented from falling.
According to the invention, through the suspension and magnetic attraction switching between the iron plate and the permanent magnet, on one hand, the stability of drawer installation can be ensured, and on the other hand, the damage of the sliding rail mechanism caused by long-term friction can be effectively prevented.
According to the invention, the hardness of the outer slide rail and the inner slide rail can be enhanced by arranging the top clamping plate, and the friction force generated in the magnetic repulsion process of the outer slide rail and the inner slide rail can be realized through the balls, so that the abrasion of the outer slide rail and the inner slide rail can be effectively avoided.
Drawings
FIG. 1 is a schematic structural installation of the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a schematic view of a slide rail mechanism according to the present invention;
FIG. 4 is a schematic structural view of a slide rail mechanism according to the present invention;
FIG. 5 is a schematic view illustrating the structural installation of an outer rail and an inner rail according to the present invention;
FIG. 6 is a schematic view of the structure of the outer rail according to the present invention;
FIG. 7 is a schematic view of the structure of the inner rail according to the present invention;
FIG. 8 is a schematic view showing the outer rail of the present invention in a disassembled configuration;
FIG. 9 is a schematic view showing the inner rail of the present invention in a disassembled configuration;
fig. 10 is a schematic structural view of the electromagnetic coil assembly of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. a low voltage switchgear body; 101. a bottom plate; 102. a side support plate;
2. a drawer; 201. a side plate;
3. a slide rail mechanism; 301. an outer slide rail; 302. an inner slide rail; 3021. a top block; 3022. a notch; 303. a mounting member; 304. an electromagnetic coil assembly; 3041. a wire end; 3042. an iron core and a coil; 305. a plastic strip; 3051. a mounting groove; 306. an iron plate; 307. a spiro ring; 308. a top clamping plate; 3081. positioning the abutting block; 309. a ball; 310. a bottom clamping plate; 311. a permanent magnet; 312. a limit bar; 313. a limit groove; 315. ball grooves.
Detailed Description
The present invention will be specifically described with reference to examples below in order to make the objects and advantages of the present invention more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the invention and does not limit the scope of the invention strictly as claimed.
As shown in fig. 1-10, a low-voltage switch cabinet extraction structure comprises a low-voltage switch cabinet body 1 and a drawer 2, wherein the drawer 2 is inserted into one side of the low-voltage switch cabinet body 1 through slide rail mechanisms 3 arranged on two sides of the drawer 2, and the slide rail mechanisms 3 comprise an outer slide rail 301 and an inner slide rail 302 which are mutually clamped.
Further, a permanent magnet 311 is fixedly installed at the bottom of the inner side of the outer slide rail 301, an iron plate 306 is fixedly installed at the top of the inner side of the inner slide rail 302, an electromagnetic coil assembly 304 is fixed at the top of the iron plate 306, the iron plate 306 is magnetically connected with the permanent magnet 311 and is positioned between the top of the inner slide rail 302 and the outer slide rail 301, and a positioning abutting block 3081 movably abutted with the inner side surface of the outer slide rail 301 is arranged at one end of the inner slide rail 302.
According to the structure, the working principle is as follows;
wherein, when iron plate 306 is magnetically connected with permanent magnet 311, outer slide rail 301 and inner slide rail 302 are fixedly installed.
When the iron plate 306 and the permanent magnet 311 repel each other magnetically, the outer slide rail 301 and the inner slide rail 302 are connected in parallel in a suspended and sliding manner, and after one end of the inner slide rail 302 slides to the inner side of the other end of the outer slide rail 301, the inner slide rail 302 tilts to tilt the positioning and abutting block 3081, and the positioning and abutting block 3081 abuts against the inner side of the outer slide rail 301.
The mechanical operating handle indication marks mentioned below correspond to:
closing position: the main switch is switched on, and the operation knob is locked;
trip position: when the switch and the internal components of the drawer 2 trip, the mechanical operating handle indicates the position;
the opening position is as follows: when the main switch is opened and the position is indicated, the handle of the operation knob is unlocked and can be operated;
reset position: after the internal components of the switch and the drawer 2 are tripped, the switch and the drawer are rotated to the position and can be reset, and the switching-on operation is performed.
The indication marks of the operation knob handles correspond to:
separation position: the drawer 2 is drawn out to a certain position, and the primary terminal and the secondary terminal need to be completely disconnected;
and (3) moving positions: the drawer 2 can be pushed in or pulled out;
test position: the drawer 2 is locked at the position, the iron plate 306 is magnetically connected with the permanent magnet 311, the main switch is turned off, and the control loop is turned on;
connection position: the drawer 2 is locked in position and the main switch is connected to the control circuit.
The working mode is as follows:
when the iron plate 306 is aligned with the permanent magnet 311 and magnetically attracted to each other, the drawer 2 and the low-voltage switch cabinet body 1 are in a connection position in a closed state, and the primary terminal and the secondary terminal are in a connection state, at the moment, the internal circuit of the electromagnetic coil assembly 304 is disconnected, and the magnetic attraction is realized between the iron plate 306 and the permanent magnet 311, so that the fixation of the drawer 2 can be realized, in addition, forced extraction is avoided, the electromagnetic coil assembly 304 can be electrified, the magnetic attraction strength between the iron plate 306 and the permanent magnet 311 is increased, the forced extraction is prevented, or the locking structure is mechanically connected with the mechanical operation handle in a transmission manner in cooperation with the locking structure of the mechanical operation handle after the drawer 2 is closed, and when the mechanical operation handle rotates to indicate the closing position, the locking structure is spliced to the bottom of the drawer 2 and penetrates the drawer 2 to realize splicing with the low-voltage switch cabinet body 1.
Further, when tripping occurs, the indication position of the mechanical operation handle is at the tripping position, at this time, the iron plate 306 and the permanent magnet 311 are in a magnetic attraction state, and the iron plate 306 and the permanent magnet 311 are in magnetic attraction connection after the electromagnetic coil assembly 304 is electrified, so that the reset between the iron plate 306 and the permanent magnet 311 is required to be realized by rotating the mechanical operation handle.
Further, the primary terminal and the secondary terminal are gradually disconnected by rotating the operation knob handle, then the iron plate 306 and the permanent magnet 311 are opposite in magnetic pole and repel each other, so that the outer slide rail 301 and the inner slide rail 302 are suspended in parallel, and the operation knob handle is rotated to indicate the moving position, so that the drawer 2 can be pulled, and friction is not generated and abrasion is avoided because the iron plate 306 and the permanent magnet 311 are in a non-contact suspension state.
When the drawer 2 is drawn out, one end of the suspended iron plate 306 is in a suspended state due to the change of the relative position between the iron plate 306 and the permanent magnet 311, and the weight of the drawer 2 is added, so that the iron plate 306 which is parallel to each other and the iron plate 306 in the permanent magnet 311 are inclined, the iron plate 306 is fixedly arranged inside the inner slide rail 302 through bolts, the inner slide rail 302 is also in an inclined state, and the inner side of the top of the outer slide rail 301 is abutted through the positioning abutting block 3081 at one end of the inner slide rail 302, so that the drawer 2 can be obliquely fixed inside the low-voltage switch cabinet body 1 at any position, the drawer 2 can be cleaned, maintained and disassembled, and the drawer 2 can be further drawn out outwards, a position sensor can be arranged at the top of the outer slide rail 301 in a penetrating way, and a magnetic pole is generated between the iron plate 306 and the permanent magnet 311 when the positioning abutting block 3081 passes through the position sensor, the drawer 2 can be prevented from falling off, or the inner coil current direction of the electromagnetic coil assembly 304 is changed, so that the drawer 2 can be completely drawn out by the iron plate 306 and the permanent magnet 311.
Because the environment of low tension switchgear body 1 installation can produce the dust or the inside radiating component of low tension switchgear body 1 carries the dust, need clear up the inside components and parts of drawer 2 to need to fasten the maintenance to the inside components and parts of drawer 2, consequently, need regularly take drawer 2 out, if the connected mode between drawer 2 and the low tension switchgear body 1 is contact frictional extraction structure, can cause the damage of slide rail assembly, consequently, through the suspension between iron plate 306 and the permanent magnet 311, magnetism inhale the switching, on the one hand can ensure the stability of drawer 2 installation, on the other hand, also can effectively prevent the slide rail mechanism 3 damage that the long-term friction caused.
In addition, the outer slide rail 301 and the inner slide rail 302 not only have a sliding effect, but also have a supporting effect when the iron plate 306 and the permanent magnet 311 are in an inclined state, and the outer slide rail 301, the inner slide rail 302 and the plastic strip 305 are all made of non-magnetic materials and have high hardness.
Referring to fig. 2-5 and fig. 9, a bottom plate 101 for abutting against the bottom of the drawer 2 is horizontally disposed inside the low-voltage switch cabinet body 1, vertical side support plates 102 are fixed on two sides inside the low-voltage switch cabinet body 1, mounting pieces 303 are disposed on the sides of the inner slide rail 302 and are fixedly mounted with the side plates 201 through bolts, and mounting pieces 303 are also disposed on the sides of the outer slide rail 301 and are fixedly mounted with the side support plates 102 through bolts.
Further, a plastic strip 305 is fixedly mounted on one side of the top of the iron plate 306 through bolts, and the electromagnetic coil assembly 304 is mounted in a mounting groove 3051 formed in the plastic strip 305.
According to the above structure, the drawer 2 is mounted in the following manner:
firstly, the outer slide rail 301 is fixedly installed on the inner side of the side support plate 102 through bolts, the side support plate 102 is fixedly installed inside the low-voltage switch cabinet body 1 through bolts, the positions of the two side support plates 102 are corresponding, then the inner slide rail 302 is installed on the outer side of the side plate 201, when the plastic strip 305 is installed, the plastic strip 305 is fixedly installed with the inner slide rail 302 through bolts, the bolts are further screwed, the side plate 201 is extended and connected through threads, and therefore the installation and the positioning of the slide rail mechanism 3 are achieved, and when the drawer 2 is inserted into the low-voltage switch cabinet body 1, the drawer 2 is installed through the corresponding insertion of the outer slide rail 301 and the inner slide rail 302.
Referring to fig. 5-9, a top clamping plate 308 is welded on one side of the top of the inner sliding rail 302, and balls 309 are rotatably mounted between the top clamping plate 308 and the inner sliding rail 302, and the balls 309 protrude out of the upper surface of the top clamping plate 308 and movably abut against the inner side of the outer sliding rail 301.
Further, a bottom clamping plate 310 is welded at the bottom of the outer side of the outer sliding rail 301, a ball 309 is rotatably installed between the bottom clamping plate 310 and the outer sliding rail 301, and the surface of the ball 309 protruding out of the bottom clamping plate 310 is movably abutted with the inner side of the inner sliding rail 302.
According to the above structure, by the arrangement of the top clamping plate 308, the hardness of the outer sliding rail 301 and the inner sliding rail 302 in the process of oblique contact between the outer sliding rail 301 and the inner sliding rail 302 can be enhanced, and the friction force generated in the process of magnetic repulsion between the outer sliding rail 301 and the inner sliding rail 302 can be realized through the balls 309, so that the abrasion of the outer sliding rail 301 and the inner sliding rail 302 can be effectively avoided.
Further, the inner side of the bottom of the inner sliding rail 302 is fixed with a top block 3021 at one end facing away from the positioning support block 3081, a notch 3022 for accommodating the balls 309 is provided in the middle of the top block 3021, the balls 309 are connected with the outer sliding rail 301 and the inner sliding rail 302, a ball groove 315 is provided at a position where the balls 309 are connected with the outer sliding rail 301, the top block 3021 is used for supporting the bottom of the outer sliding rail 301, and after the drawer 2 is completely installed on the side of the low-voltage switch cabinet body 1, the bottom of the outer sliding rail 301 is supported to prevent tilting, so that the iron plate 306 and the permanent magnet 311 after magnetic attraction are extruded by the weight of the drawer 2, deformation caused by excessive extrusion of the outer sliding rail 301 and the inner sliding rail 302 is prevented, and the stability in use of the outer sliding rail 301 and the inner sliding rail 302 is effectively improved.
Referring to fig. 9 and 10, a limit bar 312 is disposed at the bottom of the inner side of the outer sliding rail 301, and a limit groove 313 adapted to the limit bar 312 is disposed at the bottom of the permanent magnet 311.
Further, an iron core and a coil 3042 are disposed inside the electromagnetic coil assembly 304, the bottom of the iron core and the coil 3042 are fixedly connected with the iron plate 306, wires outside the iron core and the coil 3042 are electrically connected with a wire end 3041, and the wire end 3041 penetrates through the inside of the spiral ring 307 disposed on the side plate 201.
Further, the wire end 3041 is electrically connected to a polarity conversion chip mounted inside the drawer 2, and the polarity conversion chip is electrically connected to a power supply and a control system.
According to the above structure, the polarity conversion chip is used for controlling the current direction of the coil inside the electromagnetic coil assembly 304, the power supply is used for providing electric energy for the polarity conversion chip, the polarity conversion chip is electrically connected with a standby power supply, and when the internal circuit of the low-voltage switch cabinet body 1 is in power failure, the standby power supply provides electric power for the polarity conversion chip and the electromagnetic coil assembly 304, so that the iron plate 306 and the permanent magnet 311 are in magnetic attraction connection, and after the power failure, the iron plate 306 and the permanent magnet 311 are disconnected through the rotary reset switch, and at the moment, the drawer 2 can be slowly pulled out through magnetism between the iron plate 306 and the permanent magnet 311.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (10)
1. A low tension switchgear draws structure, characterized in that includes:
a low-voltage switch cabinet body (1);
the drawer (2) is inserted into one side of the low-voltage switch cabinet body (1) through sliding rail mechanisms (3) arranged on two sides of the drawer (2);
the sliding rail mechanism (3) comprises an outer sliding rail (301) and an inner sliding rail (302) which are mutually clamped;
the bottom of the inner side of the outer sliding rail (301) is fixedly provided with a permanent magnet (311), the top of the inner side of the inner sliding rail (302) is fixedly provided with an iron plate (306), the top of the iron plate (306) is fixedly provided with an electromagnetic coil assembly (304), and the iron plate (306) is magnetically connected with the permanent magnet (311);
the positioning propping block (3081) is arranged at one end of the inner sliding rail (302) and movably propped against the inner side surface of the outer sliding rail (301);
wherein the iron plate (306) is in magnetic attraction connection with the permanent magnet (311), and the outer sliding rail (301) and the inner sliding rail (302) are fixedly arranged;
the iron plate (306) and the permanent magnet (311) are magnetically repelled, the outer sliding rail (301) and the inner sliding rail (302) are in parallel suspension sliding connection, one end of the inner sliding rail (302) slides to the inner side of the other end of the outer sliding rail (301), the inner sliding rail (302) inclines to enable the positioning abutting block (3081) to tilt, and the positioning abutting block (3081) abuts against the inner side of the outer sliding rail (301).
2. The low voltage switchgear extraction structure according to claim 1, characterized in that: the low-voltage switch cabinet is characterized in that a bottom plate (101) used for abutting against the bottom of the drawer (2) is horizontally arranged inside the low-voltage switch cabinet body (1), vertical side support plates (102) are fixed on two sides inside the low-voltage switch cabinet body (1), mounting pieces (303) are arranged on the side edges of the inner sliding rail (302) and are fixedly mounted with the side plates (201) through bolts, and mounting pieces (303) are also arranged on the side edges of the outer sliding rail (301) and are fixedly mounted with the side support plates (102) through bolts.
3. The low voltage switchgear extraction structure according to claim 1, characterized in that: a top clamping plate (308) is welded on one side of the top of the inner sliding rail (302), balls (309) are rotatably arranged between the top clamping plate (308) and the inner sliding rail (302), and the balls (309) protrude out of the upper surface of the top clamping plate (308) to be movably abutted with the inner side of the outer sliding rail (301).
4. The low voltage switchgear extraction structure according to claim 1, characterized in that: the bottom of outer slide rail (301) outside welds has bottom splint (310), also rotate between bottom splint (310) and outer slide rail (301) and install ball (309), just ball (309) protrusion bottom splint (310) surface and interior slide rail (302) inboard movable butt.
5. The low voltage switchgear extraction structure according to claim 1, characterized in that: the inner side of the bottom of the inner sliding rail (302) and one end deviating from the positioning support block (3081) are fixedly provided with a top block (3021), and the middle of the top block (3021) is provided with a notch (3022) for accommodating the ball (309).
6. The low voltage switchgear extraction structure according to claim 1, characterized in that: a plastic strip (305) is fixedly arranged on one side of the top of the iron plate (306) through bolts, and the electromagnetic coil assembly (304) is arranged in a mounting groove (3051) formed in the plastic strip (305).
7. The low voltage switchgear extraction structure according to claim 1, characterized in that: the bottom of the inner side of the outer sliding rail (301) is provided with a limit bar (312), and the bottom of the permanent magnet (311) is provided with a limit groove (313) which is matched with the limit bar (312).
8. A low voltage switchgear extraction structure as claimed in claim 3 or 4, wherein: a ball groove (315) is formed in the position where the balls (309) are connected with the outer slide rail (301) and the inner slide rail (302).
9. The low voltage switchgear extraction structure according to claim 1, characterized in that: the electromagnetic coil assembly (304) is internally provided with an iron core and a coil (3042), the bottom of the iron core and the bottom of the coil (3042) are fixedly connected with an iron plate (306), wires outside the iron core and the coil (3042) are electrically connected with wire ends (3041), and the wire ends (3041) penetrate through the inside of a spiral ring (307) arranged on the side plate (201).
10. The low voltage switchgear extraction structure of claim 9 wherein: the wire end (3041) is electrically connected with a polarity conversion chip arranged in the drawer (2), and the polarity conversion chip is electrically connected with a power supply and a control system.
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| CN202311089837.3A CN117277095B (en) | 2023-08-28 | 2023-08-28 | Low-voltage switch cabinet extraction structure |
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| CN202311089837.3A CN117277095B (en) | 2023-08-28 | 2023-08-28 | Low-voltage switch cabinet extraction structure |
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| CN117277095A true CN117277095A (en) | 2023-12-22 |
| CN117277095B CN117277095B (en) | 2024-03-29 |
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| CN117878766A (en) * | 2024-03-13 | 2024-04-12 | 河南金石普惠科技有限公司 | Draw-out type switch cabinet |
| CN117878766B (en) * | 2024-03-13 | 2024-05-14 | 河南金石普惠科技有限公司 | Draw-out type switch cabinet |
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| CN117878766B (en) * | 2024-03-13 | 2024-05-14 | 河南金石普惠科技有限公司 | Draw-out type switch cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117277095B (en) | 2024-03-29 |
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