CN114126280B - Phase-failure protection PLC control cabinet - Google Patents
Phase-failure protection PLC control cabinet Download PDFInfo
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- CN114126280B CN114126280B CN202111235768.3A CN202111235768A CN114126280B CN 114126280 B CN114126280 B CN 114126280B CN 202111235768 A CN202111235768 A CN 202111235768A CN 114126280 B CN114126280 B CN 114126280B
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- shaped sliding
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- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 7
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000007791 dehumidification Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1462—Mounting supporting structure in casing or on frame or rack for programmable logic controllers [PLC] for automation or industrial process control
- H05K7/1467—PLC mounted in a cabinet or chassis
Abstract
The invention belongs to the technical field of PLC control cabinets, in particular to a phase-failure protection PLC control cabinet, which aims at solving the problem that the existing control cabinet is not sensitive enough to phase-failure detection. When the LED lamp is used normally, once one path of wire current or voltage is insufficient, the control circuit in the control box can control the LED lamp to be turned off, the LED lamp can be monitored by the photosensitive sensor at the moment, a signal is transmitted to the processor, the automatic switching mechanism is controlled to disconnect the total circuit, protection is formed, and the signal is transmitted to the control panel on the box door, so that external maintenance personnel can know information.
Description
Technical Field
The invention relates to the technical field of PLC control cabinets, in particular to a phase-failure protection PLC control cabinet.
Background
With the rapid development of national economy, the three-phase alternating current asynchronous motor is widely applied to various main departments of national economy such as petroleum, chemical industry, metallurgy, textile and the like due to the simple structure, low cost, reliable operation and convenient maintenance, and works by dragging a load by the motor, thus completing the production task. In recent years, motor protection problems have long plagued motor protection professionals and operators. According to incomplete statistics, the serious damage caused by motor overload, short circuit phase failure, grounding and other faults can reach hundreds of severe accidents in the whole country, and the direct economic loss is hundreds of hundred yuan.
The existing motor protection device has the following defects: 1. the motor comprehensive protector produced by most factories only has the functions of overload, undervoltage and short circuit protection of low voltage (380V), and does not have the function of high-voltage open-phase protection, so that the high-voltage open-phase is an important reason for causing motor burning in use; 2. the existing equipment only has a protection function, can cut off faults when faults occur, and does not have a fault alarm function, so that a novel control cabinet with good sensitivity is needed.
Disclosure of Invention
The invention provides a phase-failure protection PLC control cabinet, which aims to solve the problem that the existing control cabinet is not sensitive enough to phase-failure detection.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a PLC switch board of open-phase protection, establishes the control cabinet body that the cavity wholly is the cuboid structure including interior, open the front of control cabinet body has the rectangular hole, and articulates there is the chamber door in the rectangular hole, the centre of chamber door inlays and is equipped with control panel, and one side inner wall sliding connection who keeps away from the chamber door of control cabinet body has sliding support frame, sliding support frame is close to one side of chamber door and is fixed with three mounting platform that are parallel to each other, be provided with the control box on the three mounting platform respectively, automatic switch mechanism and electrical apparatus, the side of control box is close to the top and is fixed with treater and LED lamp respectively, and be fixed with photosensitive sensor under the LED lamp, the LED lamp series connection is in the control circuit of control box, and photosensitive sensor's signal output part links to each other with the treater signal input part through the signal line, the signal output part of treater passes through the signal line and links to each other with automatic switch mechanism, thereby can be in ordinary use, in case there is electric wire current or voltage not enough, then control circuit can control LED lamp to go out the monitoring, can be arrived by photosensitive sensor, the automatic transmission to the treater, control circuit is close to the top of the control panel and become the control panel and the maintenance personnel on the external personnel of the maintenance of the control panel, the personnel of will be informed.
According to the invention, the control box comprises three electromagnets fixed on the inner wall of the bottom of the control box, the magnetic pole directions of the three electromagnets are consistent, the inner wall of the top of the control box is positioned right above the electromagnets, a channel steel upright post is fixed on the bottom of the channel steel upright post, an L-shaped connecting rod is fixed near the top end of the channel steel upright post, an upper contact block is fixed at the bottom end of the L-shaped connecting rod, a sliding block is slidably connected in a sliding way of a sliding groove of the channel steel upright post, one side of the sliding block, far away from the bottom, is provided with a magnet, the magnetic pole of the lower surface of the magnet is the same as the magnetic pole of the top end of the electromagnet, a lower contact block is fixed at the top end of the magnet, a metal block is fixed between the lower surface of the lower contact block and the magnet, all the metal blocks are connected with the side faces of the L-shaped connecting rod in series in a zigzag mode, and therefore, the three electromagnets can tightly abut against the lower contact block on the lower surface of the upper contact block under the normal power action, so that the control circuit is conducted, once the circuit is broken or the power is obviously weakened, the circuit is broken, and the signal is cut off when the circuit is correspondingly supplied to the circuit.
As a preferable scheme in the invention, V-shaped grooves which are meshed with each other are respectively formed on the lower surface of the upper contact block and the upper surface of the lower contact block, so that the contact area is increased, the conduction effect during contact is improved, and sparks generated by mutual dislocation of the two contact blocks due to shaking of the device are avoided.
As the preferable scheme in the invention, the front surfaces of the metal block and the L-shaped connecting rod are respectively provided with a mounting hole communicated with the wire holes, locking nuts are embedded in the mounting holes, fastening bolts are screwed in the locking nuts, serial wires are fixed between the wire holes, and contact heads are fixed at the end parts of the serial wires positioned at the two ends.
As a preferable scheme in the invention, the signal output end of the processor is connected with the control panel through a signal wire.
As the preferable scheme in the invention, the automatic switching mechanism comprises two groove-shaped sliding rails with opposite openings and parallel to each other, the two groove-shaped sliding rails are made of insulating materials, three mutually parallel pressing rods are connected between the two groove-shaped sliding rails in a sliding way, the pressing rods are made of spring steel materials with good toughness, fixed baffle rods are fixed at the upper end and the lower end of the groove-shaped sliding rails, elastic contacts are arranged at the end parts of the fixed baffle rods, close to the groove-shaped sliding rails, and reset springs are fixedly connected between the elastic contacts and the fixed baffle rods, so that when a circuit is required to be connected, the three pressing rods are only required to be controlled to be close to the elastic contacts at the same time, the contact can be tighter by matching with the elasticity of the elastic contacts, and the bad contact condition is reduced.
As a preferable scheme in the invention, sliding blocks are fixed on the front side and the rear side of the pressure bar, the same connecting rod is fixed between the three sliding blocks positioned in the same groove-shaped sliding rail, an electric push rod is fixed between the end parts of the two groove-shaped sliding rails, a control switch of the electric push rod is connected with a signal output end of a processor through a signal wire, and the sliding blocks in the two groove-shaped sliding rails can be simultaneously driven to horizontally move through the arrangement of the electric push rod, so that the three pressure bars fixed on the sliding blocks are driven to be simultaneously contacted with the elastic contacts on the fixed baffle rod.
As the preferable scheme in the invention, the back surface of the sliding support frame is close to the upper end and the lower end and is respectively fixed with a guide rail and a tower-shaped sliding block, the inner wall of the control cabinet body is fixed with a roller shaft matched with the guide rail, the back surface of the control cabinet body is close to the bottom end and is embedded with a guide groove matched with the tower-shaped sliding block, and the lower surface of the tower-shaped sliding block is provided with a buffer spring, so that a certain buffer effect can be generated for internal parts of the device when the device is used.
As the preferable scheme in the invention, a dehumidifying box is fixed in the bottom of the control cabinet body, a dehumidifying fan is arranged in the dehumidifying box, and a plurality of air holes are formed in the side face of the dehumidifying box.
In summary, the beneficial effects in this scheme are:
1. according to the PLC control cabinet for phase failure protection, through the arrangement of the upper contact block and the lower contact block which are connected together in series and the arrangement of the electromagnet, the lower contact block can be tightly abutted against the lower surface of the upper contact block under the action of normal power, so that the conduction of a control circuit is ensured, once one group of circuits is broken or the power is obviously weakened, the electromagnet under the control of the group of circuits is insufficient to be in contact with the lower contact block and the upper contact block, the control circuit is cut off, and a corresponding processor can cut off a supply circuit when a signal instruction is obtained;
2. the PLC control cabinet for phase-failure protection can control three compression bars to approach the elastic contact at the same time when a circuit is needed to be connected in use by arranging the compression bars made of spring steel materials and the elastic contacts for fixing the end parts of the blocking bars, and can make contact more compact by matching with the elasticity of the elastic contact at the moment to reduce the condition of poor contact,
3. the sliding blocks in the two groove-type sliding rails can be driven to move horizontally simultaneously through the arrangement of the electric push rod, and then three pressing rods fixed on the sliding blocks are driven to contact with the elastic contact on the fixed stop rod simultaneously.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic perspective view of the engaging mechanism of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 1A according to the present invention;
FIG. 4 is a schematic diagram of a main circuit structure of the present invention;
fig. 5 is a schematic diagram of a control flow structure of the present invention.
In the figure: the intelligent control cabinet comprises a control cabinet body, a photosensitive sensor 2, a control box 3, an LED lamp 4, a contact head 5, an upper contact block 6, a channel steel upright post 7, a 701L-shaped connecting rod 702, a lower contact block 703, a magnet 704, a fastening bolt 705, a 706 serial lead, an electromagnet 8, a 9 sliding support frame, a 10 roller, a 11 guide rail, a 12 groove type sliding rail, a 13 compression bar, a 14 fixed baffle bar, a 15 guide groove, a 16 tower type sliding block, a 17 buffer spring, a 18 dehumidifying fan, a 19 dehumidifying box, an electric appliance 20, a 21 electric push rod, a 22 control panel, a 23 box door, a 24 reset spring and a 25 elastic contact.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present embodiment
Referring to fig. 1-5, a phase-failure protection's PLC control cabinet, including the control cabinet body 1 of interior cavity whole cuboid structure of establishing, open the front of control cabinet body 1 has the rectangular hole, and articulated in the rectangular hole have chamber door 23, the centre of chamber door 23 is inlayed and is equipped with control panel 22, and the one side inner wall sliding connection who keeps away from chamber door 23 of control cabinet body 1 has sliding support frame 9, one side that sliding support frame 9 is close to chamber door 23 is fixed with three mounting platforms that are parallel to each other, be provided with control box 3 on the three mounting platforms respectively, automatic switch mechanism and power consumption 20, the side of control box 3 is close to the top and is fixed with treater and LED lamp 4 respectively, and be fixed with photosensitive sensor 2 under the LED lamp 4, LED lamp 4 series connection is in the control circuit in control box 3, and photosensitive sensor 2's signal output part links to each other with the treater signal input part through the signal line, thereby can be in case when ordinary use, in case have electric wire current or voltage deficiency, control LED lamp 3 can control lamp 4, can control the LED lamp 4, and be become the photosensitive sensor 2, and the controller can become the automatic switch controller is realized to the automatic switch controller 2, and the signal is become the control signal is transmitted to the control panel is become the external, and the controller is become the control signal to the external, and is become the control signal to the external personnel is known.
The control box 3 comprises three electromagnets 8 fixed on the inner wall of the bottom of the control box 3, the magnetic pole directions of the three electromagnets 8 are consistent, the inner wall of the top of the control box 3 is positioned right above the electromagnets 8 and is fixedly provided with a channel steel upright post 7, the bottom of the channel steel upright post 7 is close to the top end and is fixedly provided with an L-shaped connecting rod 701, the bottom of the L-shaped connecting rod 701 is fixedly provided with an upper contact block 6, a sliding block is slidably connected in a sliding groove of the channel steel upright post 7, one side of the sliding block, far away from the bottom, is provided with a magnet 703, the magnetic pole of the lower surface of the magnet 703 is the same as the magnetic pole of the top of the electromagnet 8, the top of the magnet 703 is fixedly provided with a lower contact block 702, a wire hole 705 is formed between the lower surface of the lower contact block 702 and the magnet 703, and all the wire holes 705 are connected in a zigzag series, so that the three electromagnets 8 can tightly abut against the lower contact block 702 on the lower surface of the upper contact block 6 under the normal power action in order to ensure that a control circuit is conducted once a group of circuits is generated or the power is weakened, the lower contact block 8 is not contacted with the corresponding circuit breaker when the control circuit is cut off, and the corresponding circuit is not contacted with the lower contact block 8 at the moment, and the control circuit is supplied with the corresponding instruction.
The lower surface of the upper contact block 6 and the upper surface of the lower contact block 702 are respectively provided with V-shaped grooves which are meshed with each other, so that the contact area is increased, the conduction effect during contact is improved, and spark generation caused by mutual dislocation of the two contact blocks due to device shake is avoided.
The metal block and the front face of the L-shaped connecting rod 701 are provided with mounting holes which are mutually communicated with the wire holes 705, locking nuts are embedded in the mounting holes, fastening bolts 704 are screwed in the locking nuts, serial wires 706 are fixed between the wire holes 705, and contact heads 5 are fixed at the end parts of the serial wires 706 positioned at the two ends.
Wherein the signal output of the processor is connected to the control panel 22 via a signal line.
The automatic switching mechanism comprises two groove-shaped sliding rails 12 with opposite openings and parallel to each other, the two groove-shaped sliding rails 12 are made of insulating materials, three mutually parallel pressing rods 13 are connected between the two groove-shaped sliding rails 12 in a sliding mode, the pressing rods 13 are made of a spring steel material with good toughness, fixing baffle rods 14 are fixed at the upper end and the lower end of the groove-shaped sliding rails 12, elastic contacts 25 are arranged at the end portions, close to the groove-shaped sliding rails 12, of the fixing baffle rods 14, reset springs 24 are fixedly connected between the elastic contacts 25 and the fixing baffle rods 14, and therefore when a circuit needs to be connected, only the three pressing rods 13 are required to be controlled to be close to the elastic contacts 25 at the same time, contact can be made to be tighter by matching with the elasticity of the elastic contacts 25, and poor contact conditions are reduced.
Wherein, both sides all are fixed with the sliding block around depression bar 13, and be located and be fixed with same connecting rod between three sliding block in same groove type slide rail 12, be fixed with electric putter 21 between the tip of two groove type slide rails 12, electric putter 21's control switch passes through the signal line and links to each other with the signal output part of treater, can drive the simultaneous horizontal migration of sliding block in two groove type slide rails 12 simultaneously through electric putter 21's setting, and then drive the simultaneous contact with the elastic contact 25 on the fixed shelves pole 14 of three depression bar 13 that are fixed on the sliding block.
The back of the sliding support frame 9 is close to the upper end and the lower end, a guide rail 11 and a tower-shaped sliding block 16 are respectively fixed on the upper end and the lower end, a roller shaft 10 matched with the guide rail 11 is fixed on the inner wall of the control cabinet body 1, a guide groove 15 matched with the tower-shaped sliding block 16 is embedded in the back of the control cabinet body 1 close to the bottom end, and a buffer spring 17 is arranged on the lower surface of the tower-shaped sliding block 16, so that a certain buffer effect can be generated for internal parts of the device when the device is used.
Wherein, the bottom inside of switch board body 1 is fixed with dehumidification case 19, and the inside of dehumidification case 19 is provided with dehumidification fan 18, and the side of dehumidification case 19 is opened a plurality of bleeder vents.
Working principle: in normal use, once one of the circuits is broken or the power is obviously weakened, the electromagnet 8 under the control of the circuit is not in contact with the lower contact block 702 and the upper contact block 6, the control circuit is cut off, the control circuit in the control box 3 can control the LED lamp 4 to turn off, the LED lamp can be monitored by the photosensitive sensor 2, a signal is transmitted to the processor, the electric push rod 21 in the automatic switching mechanism is controlled to disconnect the total circuit, protection is formed, and the signal is transmitted to the control panel 22 on the box door 23, so that external maintenance personnel can know information.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The utility model provides a PLC switch board of open-phase protection, includes establishes control cabinet body (1) that the cavity is whole to be cuboid structure in the interior, open the front of control cabinet body (1) has the rectangular hole, and articulates in the rectangular hole has chamber door (23), the centre of chamber door (23) is inlayed and is equipped with control panel (22), and one side inner wall sliding connection who keeps away from chamber door (23) of control cabinet body (1) has sliding support frame (9), one side that sliding support frame (9) is close to chamber door (23) is fixed with three mounting platform that are parallel to each other, characterized in that is provided with control box (3) on the three mounting platform respectively, automatic switch mechanism and electrical apparatus (20), the side of control box (3) is close to the top and is fixed with treater and LED lamp (4) respectively, and be fixed with photosensitive sensor (2) under the LED lamp (4) in the control circuit in control box (3), and the signal output part of photosensitive sensor (2) links to each other with treater signal input end through the signal line, the signal output part of treater links to each other through the signal line and automatic switch mechanism, the signal output part of treater links to each other with electromagnet (8) including being fixed on three inner walls (8) of control box (8) and electromagnet (8) top, 8 top that are located on the top of three electromagnet (8), the groove bottom of channel-section steel stand (7) is close to top and is fixed with L shape connecting rod (701), the bottom mounting of L shape connecting rod (701) has upper contact block (6), and the spout sliding connection of channel-section steel stand (7) has the slider, one side that the groove bottom was kept away from to the slider presss from both sides holds magnet (703), and the lower surface magnetic pole of magnet (703) is the same with the magnetic pole on electro-magnet (8) top, the top of magnet (703) is fixed with down contact block (702), be fixed with the metal piece between the lower surface of lower contact block (702) and magnet (703), and all metal pieces all open wired hole (705) with the side of L shape connecting rod (701), and be zigzag series connection between all wired hole (705) and be in the same place.
2. The phase-failure protected PLC control cabinet of claim 1, wherein the lower surface of the upper contact block (6) and the upper surface of the lower contact block (702) are respectively provided with V-shaped grooves engaged with each other.
3. The phase-failure protection PLC control cabinet according to claim 1, wherein the front surfaces of the metal block and the L-shaped connecting rod (701) are provided with mounting holes which are mutually communicated with the wire holes (705), locking nuts are embedded in the mounting holes, fastening bolts (704) are screwed in the locking nuts, serial wires (706) are fixed between the wire holes (705), and contact heads (5) are fixed at the end parts of the serial wires (706) at the two ends.
4. A phase-failure protected PLC control cabinet in accordance with claim 3, wherein the signal output of the processor is connected to the control panel (22) via a signal line.
5. The phase-failure protection PLC control cabinet according to claim 1, wherein the automatic switching mechanism comprises two groove-shaped sliding rails (12) with opposite openings and parallel to each other, the two groove-shaped sliding rails (12) are made of insulating materials, three mutually parallel pressing rods (13) are connected between the two groove-shaped sliding rails (12) in a sliding mode, the pressing rods (13) are made of flexible spring steel materials, fixing baffle rods (14) are fixed at the upper end and the lower end of the groove-shaped sliding rails (12) which are located at the upper end and the lower end of the pressing rods (13), elastic contacts (25) are arranged at one side, close to the groove-shaped sliding rails (12), of the end portions of the fixing baffle rods (14), and reset springs (24) are fixedly connected between the elastic contacts (25) and the fixing baffle rods (14).
6. The phase-failure protection PLC control cabinet according to claim 5, wherein sliding blocks are fixed on the front side and the rear side of the pressure rod (13), the same connecting rod is fixed between three sliding blocks in the same groove-shaped sliding rail (12), an electric push rod (21) is fixed between the end parts of the two groove-shaped sliding rails (12), and a control switch of the electric push rod (21) is connected with a signal output end of a processor through a signal wire.
7. The phase-failure protection PLC control cabinet according to claim 1, wherein a guide rail (11) and a tower-shaped sliding block (16) are respectively fixed at the back surface of the sliding support frame (9) close to the upper end and the lower end, a roller shaft (10) matched with the guide rail (11) is fixed on the inner wall of the control cabinet body (1), a guide groove (15) matched with the tower-shaped sliding block (16) is embedded at the back surface of the control cabinet body (1) close to the bottom end, and a buffer spring (17) is arranged on the lower surface of the tower-shaped sliding block (16).
8. The phase-failure protection PLC control cabinet according to claim 1, wherein a dehumidifying box (19) is fixed inside the bottom of the control cabinet body (1), a dehumidifying fan (18) is arranged inside the dehumidifying box (19), and a plurality of ventilation holes are formed in the side face of the dehumidifying box (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111235768.3A CN114126280B (en) | 2021-10-22 | 2021-10-22 | Phase-failure protection PLC control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111235768.3A CN114126280B (en) | 2021-10-22 | 2021-10-22 | Phase-failure protection PLC control cabinet |
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| Publication Number | Publication Date |
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| CN114126280A CN114126280A (en) | 2022-03-01 |
| CN114126280B true CN114126280B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111235768.3A Active CN114126280B (en) | 2021-10-22 | 2021-10-22 | Phase-failure protection PLC control cabinet |
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| CN115413165B (en) * | 2022-09-19 | 2024-04-23 | 深圳市同芯智控技术有限公司 | Core control device based on EtherCAT bus protocol |
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| CN114126280A (en) | 2022-03-01 |
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