CN111900657A - Low-voltage distribution cabinet body assembly correcting device - Google Patents
Low-voltage distribution cabinet body assembly correcting device Download PDFInfo
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- CN111900657A CN111900657A CN202010793294.3A CN202010793294A CN111900657A CN 111900657 A CN111900657 A CN 111900657A CN 202010793294 A CN202010793294 A CN 202010793294A CN 111900657 A CN111900657 A CN 111900657A
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- plate
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- correction
- fixedly connected
- straightening
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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
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
Abstract
The invention relates to the technical field of power distribution cabinet assembly, in particular to a low-voltage power distribution cabinet body assembly correcting device which comprises a base module, wherein the base module is fixedly connected with a first extrusion module, a second extrusion module, a first correction module and a second correction module, the first extrusion module and the first correction module are respectively identical in structure with the second extrusion module and the second correction module, the base module comprises a bottom plate, and the top surface of the bottom plate is fixedly connected with a supporting plate. According to the invention, the second toothed plate and the first toothed plate are respectively fixedly connected with the correcting plates of the first correcting module and the second correcting module, the first hydraulic cylinder and the motor are started, so that the correcting plates of the first correcting module and the second correcting module move oppositely, and the first extrusion plate and the second extrusion plate move oppositely to extrude the cabinet frame, so that the cabinet frame is corrected.
Description
Technical Field
The invention relates to the technical field of power distribution cabinet assembly, in particular to a low-voltage power distribution cabinet body assembly correcting device.
Background
The low-voltage distribution cabinet is one kind of high-low voltage distribution cabinet, facing be small-size power equipment's use, low-voltage distribution cabinet is different with high-voltage distribution cabinet rated current, low-voltage distribution cabinet's rated current is 50HZ alternating current, power rated voltage is at 380V, the most common application is lighting system and transport electric energy conversion and control, low-voltage distribution cabinet's advantage is that the breaking and shutting is quick, temperature difference control is good, the heat energy utilization degree is high, low-voltage distribution cabinet's construction installation is all simple and convenient, can the independent assortment, the practicality is high, the simple structure is novel.
When current low-voltage distribution cabinet was produced, the skeleton of switch board was assembled into by the steel pole earlier usually, then fixed iron plate on the tank bracket, accomplished the equipment of switch board, and at the in-process of equipment switch board skeleton, because production quality scheduling problem, crooked condition appears easily in the tank bracket of equipment, revises the cabinet body by the manual work at this moment usually, but the manual work is revised comparatively trouble, causes the injury to the cabinet body easily, and can't guarantee the result of revising.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide an assembly correction device for a low-voltage power distribution cabinet body.
The purpose of the invention can be realized by the following technical scheme:
a low-voltage power distribution cabinet body assembly correcting device comprises a base module, wherein the base module is fixedly connected with a first extrusion module, a second extrusion module, a first correction module and a second correction module, the first extrusion module and the first correction module are respectively identical in structure with the second extrusion module and the second correction module, the base module comprises a bottom plate, a supporting plate is fixedly connected to the top surface of the bottom plate, a first hydraulic cylinder is fixedly connected to the inner bottom surface of the bottom plate, a piston rod of the first hydraulic cylinder is fixedly connected with a connecting rod which is slidably connected with the bottom plate, the first hydraulic cylinder can drive the connecting rod to move, two ends of the connecting rod are fixedly connected with a first toothed plate, the moving amount of the connecting rod can drive the first toothed plate to move, the two first toothed plates are slidably connected with the supporting plate and the bottom plate, two sides of the inner bottom surface, the first rotating shaft which is rotatably connected with the bottom surface of the supporting plate is rotatably connected between the first toothed plate and the second toothed plate on two sides of the inner bottom surface of the bottom plate, a first gear is fixedly sleeved on the side wall of the first rotating shaft, the first toothed plate and the second toothed plate which are positioned on the same side are in meshing transmission with the first gear, and the first toothed plate can drive the second toothed plate to move through the first gear;
the first straightening module comprises a straightening plate, one ends of two toothed plates two and two toothed plates one outside a bottom plate are respectively and fixedly connected with the bottom surfaces of the first straightening module and the second straightening module, a hydraulic cylinder one can drive the straightening plates of the first straightening module and the second straightening module to move oppositely through the first toothed plate and the second toothed plate to extrude the cabinet body so as to conduct correction, the bottom surfaces of the first straightening module and the second straightening module are respectively and slidably connected with the top surface of the bottom plate, the first extrusion module comprises a first upright post and a second upright post, two ends of the top surface of the bottom plate, which are positioned on one side of the straightening plate, are respectively and fixedly connected with the bottom surfaces of the first upright post and the second upright post, the inner bottom surfaces of the second upright post are fixedly connected with a motor, the output end of the motor is fixedly connected with a first bidirectional screw rod rotationally connected with the inner side surface of the first upright post, the motor can drive the first bidirectional screw rod to, the utility model discloses a cabinet body, including stand one, two stand, two-way lead screw, pulley, starter motor, two-way lead screw, two-way extrusion.
Further, the method comprises the following steps: the utility model discloses a cabinet body, including the box of rectifying, the box is corrected to the side fixedly connected with of rectifying that the board is located backup pad one side corrects the box, it is connected with and corrects the box inside rotation to correct the board side and rotate the pivot two of being connected, pivot both sides lateral wall is fixed to have cup jointed gear two, correct box top surface and the equal sliding connection in bottom surface L template two, correct two equal sliding connection in lateral surfaces of box and have L template one, the sunken position of the cabinet body can be corrected to L template one and L template two the opposite face of L template one and two L template two is located the box internal portion of correcting respectively fixedly connected with rack one and rack two, two rack one all with correct board sliding connection, two rack one and two rack two all mesh with gear two and transmit.
Further, the method comprises the following steps: the correcting box is characterized in that a fixing seat is fixedly connected to the inner side wall of the correcting box, a hydraulic cylinder II is fixedly connected to the side face of the fixing seat, a connecting block is fixedly connected to a piston rod of the hydraulic cylinder II, the side face of the connecting block is fixedly connected with one side face of a rack, the hydraulic cylinder II is started to drive the rack I to move, the rack I can drive the rack II to move through a gear II, and therefore the L-shaped plate I and the L-shaped plate II are moved out of the correcting box.
Further, the method comprises the following steps: the top surface of the supporting plate is provided with a cabinet frame, and the width and the length of the supporting plate are respectively the same as those of the cabinet frame.
Further, the method comprises the following steps: the first toothed plate and the second toothed plate are the same in specification.
Further, the method comprises the following steps: the distance between the first upright post and the two opposite surfaces of the upright post is larger than the width of the supporting plate, so that the cabinet frame cannot be placed on the supporting plate.
The invention has the beneficial effects that:
1. the two-way screw rod I and the two-way screw rod II are driven to rotate by starting a motor after the tank frame is placed on the supporting plate, so that the first extruding plate and the two-way screw rod II move oppositely to extrude the two sides of the tank frame, the two ends of the tank frame are accordingly corrected, the operation is simple and convenient to use, the two ends of the tank frame are extruded, the side surfaces of the tank frame are corrected, the supporting plate can limit the moving distance of the first extruding plate and the second extruding plate, and the tank frame is prevented from being excessively extruded to damage the tank frame;
2. the correcting device comprises a correcting box, a first L-shaped plate and a second L-shaped plate, wherein the first L-shaped plate and the second L-shaped plate are connected in a sliding mode, the first L-shaped plate and the second L-shaped plate are fixedly connected with a first rack and a second rack respectively, the first rack and the second rack are meshed with a second gear in a transmission mode, a piston rod of a hydraulic cylinder is fixedly connected with a connecting block, the second hydraulic cylinder is started, the second hydraulic cylinder can drive the first rack to move through the connecting block, the first rack can drive the second rack to move through the gear, the first L-shaped plate and the second L-shaped plate can move out of the correcting box and abut against a cabinet frame, the second hydraulic cylinder can be started, the first correcting module and the correcting plate of the second correcting module move back to back, the inwards sunken part of the cabinet frame can be corrected, the supporting strength of the cabinet frame.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of a low-voltage power distribution cabinet body assembly correction device of the invention;
fig. 2 is a schematic structural diagram of a base module of the low-voltage power distribution cabinet body assembly correction device of the invention;
fig. 3 is a schematic structural diagram of a bottom plate of the low-voltage power distribution cabinet body assembly correction device of the invention;
fig. 4 is a schematic structural diagram of a rectification module of the low-voltage distribution cabinet body assembly correction device of the invention;
fig. 5 is a schematic structural view of a correction box of the low-voltage distribution cabinet body assembly correction device of the invention;
FIG. 6 is a schematic structural view of a second gear of the low-voltage distribution cabinet body assembly correction device of the invention;
fig. 7 is a schematic structural diagram of an extrusion module of the low-voltage power distribution cabinet body assembly correction device of the invention;
fig. 8 is a schematic structural diagram of a second upright post of the low-voltage power distribution cabinet body assembly correction device.
In the figure: 100. a base module; 110. a cabinet frame; 120. a support plate; 130. a base plate; 140. a toothed plate I; 150. a connecting rod; 160. a first rotating shaft; 170. a first gear; 180. a toothed plate II; 190. a first hydraulic cylinder; 200. a first correcting module; 210. straightening a plate; 220. a rectification box; 230. an L-shaped plate I; 240. a first rack; 250. connecting blocks; 260. a second hydraulic cylinder; 270. an L-shaped plate II; 280. a second rack; 290. a second gear; 300. a first extrusion module; 310. a first upright post; 320. a first extrusion plate; 330. a first bidirectional screw rod; 340. a second extrusion plate; 350. a motor; 360. a second upright post; 370. a belt pulley; 380. a two-way screw rod II; 400. a second extrusion module; 500. and a second correcting module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, an assembly and correction device for a low voltage power distribution cabinet comprises a base module 100, the base module 100 is fixedly connected with a first extrusion module 300, a second extrusion module 400, a first correction module 200 and a second correction module 500, the first extrusion module 300 and the first correction module 200 are respectively identical in structure to the second extrusion module 400 and the second correction module 500, the base module 100 comprises a bottom plate 130, a supporting plate 120 is fixedly connected to the top surface of the bottom plate 130, a first hydraulic cylinder 190 is fixedly connected to the inner bottom surface of the bottom plate 130, a connecting rod 150 slidably connected to the bottom plate 130 is fixedly connected to a piston rod of the first hydraulic cylinder 190, the first hydraulic cylinder 190 can drive the connecting rod 150 to move, first tooth plates 140 are fixedly connected to both ends of the connecting rod 150, the moving amount of the connecting rod 150 can drive the first tooth plates 140 to move, the first tooth plates 140 are slidably connected to the supporting plate 120 and the bottom plate 130, second tooth plates 180 slidably connected, the first rotating shaft 160 rotatably connected with the bottom surface of the supporting plate 120 is rotatably connected between the first toothed plate 140 and the second toothed plate 180 on both sides of the bottom surface in the bottom plate 130, the first gear 170 is fixedly sleeved on the side wall of the first rotating shaft 160, the first toothed plate 140 and the second toothed plate 180 on the same side are in meshing transmission with the first gear 170, and the first toothed plate 140 can drive the second toothed plate 180 to move through the first gear 170;
the first straightening module 200 comprises a straightening plate 210, one ends of the two toothed plates 180 and the two toothed plates 140, which are positioned outside the bottom plate 130, are fixedly connected with the bottom surfaces of the straightening plates 210 of the first straightening module 200 and the second straightening module 500 respectively, the hydraulic cylinder 190 can drive the straightening plates 210 of the first straightening module 200 and the second straightening module 500 to move oppositely through the toothed plates 140 and 140 to extrude the cabinet body, so as to perform straightening, the bottom surfaces of the straightening plates 210 of the first straightening module 200 and the second straightening module 500 are both in sliding connection with the top surface of the bottom plate 130, the first extruding module 300 comprises a first upright post 310 and a second upright post 360, two ends of the top surface of the bottom plate 130, which are positioned on one side of the straightening plate 210, are fixedly connected with the bottom surfaces of the first upright post 310 and the second upright post 360 respectively, the inner bottom surfaces of the second upright post 360 are fixedly connected with a motor 350, the output end of the motor 350 is fixedly connected with a, the two-way screw rod I330 of the first extrusion module 300 and the second extrusion module 400 are rotatably connected with the side face of the support plate 120, the two-way screw rod II 380 is rotatably connected with the top of the inner side face of the first upright column 310 and the top of the inner side face of the second upright column 360, the belt pulley 370 is fixedly sleeved at one end of the two-way screw rod I330 and one end of the two-way screw rod II 380, which are positioned in the second upright column 360, the two belt pulleys 370 are connected through belt transmission, the two-way screw rod I330 can drive the two-way screw rod II 380 to rotate through the belt pulley 370, the two ends of the two-way screw rod I330 and the two-way screw rod II 380 are respectively and rotatably connected with the first extrusion plate 320 and the second extrusion plate 340, the first extrusion plate 320 and the second extrusion plate 340 can move oppositely, the cabinet body is extruded and corrected, and the first extrusion.
The side surface of the correction plate 210, which is positioned on one side of the supporting plate 120, is fixedly connected with a correction box 220, the side surface of the correction plate 210, which is positioned inside the correction box 220, is rotatably connected with a second rotating shaft which is rotatably connected with the inner side surface of the correction box 220, the side wall of the second rotating shaft is fixedly sleeved with a second gear 290, the top surface and the bottom surface of the correction box 220 are both slidably connected with a second L-shaped plate 270, the two outer side surfaces of the correction box 220 are both slidably connected with a first L-shaped plate 230, the first L-shaped plate 230 and the second L-shaped plate 270 can correct the sunken part of the cabinet body, the opposite surfaces of the first L-shaped plate 230 and the second L-shaped plates 270 are positioned inside the correction box 220 and are respectively and fixedly connected with a first rack 240 and.
Correcting box 220 inside wall fixedly connected with fixing base, the second 260 of fixing base side fixedly connected with pneumatic cylinder, the piston rod fixedly connected with connecting block 250 of the second 260 of pneumatic cylinder, connecting block 250 side and the first 240 side fixed connection of rack, it can drive the first 240 of rack to start the second 260 of pneumatic cylinder and remove, the first 240 of rack can drive the second 280 of rack to remove through the second 290 of gear to with the first 230 and the second 270 of L template removal of L template and correct box 220, revise the cabinet body. The cabinet frame 110 is disposed on the top surface of the supporting plate 120, and the width and the length of the supporting plate 120 are respectively the same as those of the cabinet frame 110. The first toothed plate 140 and the second toothed plate 180 have the same specification. The distance between the opposite surfaces of the first upright post 310 and the second upright post 360 is larger than the width of the support plate 120, so that the cabinet frame 110 cannot be placed on the support plate 120.
When the cabinet frame straightening device is used, the cabinet frame 110 can be straightened on the supporting plate 120, and the supporting plate 120 can block the movement of the straightening plate 210, the first extrusion plate 320 and the second extrusion plate 340, so that the cabinet frame 110 is prevented from being excessively extruded, and the cabinet frame 110 is prevented from deforming, and the cabinet frame straightening device is convenient to use.
The working principle is as follows: when the correcting device is used, the cabinet frame 110 is placed on the supporting plate 120, the hydraulic cylinder I190 and the motor 350 are started, the hydraulic cylinder I190 can drive the toothed plate I140 to move through the connecting rod 150, the toothed plate I140 can drive the toothed plate II 180 to move through the gear I170, the correcting module I200 and the correcting plate 210 of the correcting module II 500 move oppositely, the correcting plate 210 can extrude two ends of the cabinet frame 110 to correct the side face of the cabinet frame 110, meanwhile, the motor 350 can drive the bidirectional screw rod I330 to rotate, the bidirectional screw rod I330 can drive the bidirectional screw rod II 380 to rotate through the belt pulley 370, the extrusion plate I320 and the extrusion plate II 340 move oppositely, the two sides of the cabinet frame 110 are extruded, the two ends of the cabinet frame 110 are corrected, then the motor 350 can rotate reversely, the extrusion plate I320 and the extrusion plate II 340 loosen the cabinet frame 110, the hydraulic cylinder II 260 is started to drive one rack I240, the rack I240 can drive the other rack I240 and the two rack II 280 to move through the, therefore, the two first L-shaped plates 230 and the two second L-shaped plates 270 move out of the correction box 220 to abut against the cabinet frame 110, then the first hydraulic cylinder 190 is started to enable the correction module 200 and the correction plate 210 of the correction module 500 to move back to back, at the moment, the inward sunken part of the cabinet frame 110 can be corrected by the first L-shaped plates 230 and the second L-shaped plates 270, meanwhile, the structural strength of the cabinet frame 110 can be tested, after the correction and the test are finished, the second hydraulic cylinder 260 is started to drive the first rack 240 to move in the reverse direction, the first L-shaped plates 230 and the second L-shaped plates 270 move into the correction box 220, then the first hydraulic cylinder 190 is started to enable the first correction module 200 and the correction plate 210 of the second correction module 500 to move back to back, at the moment, the cabinet frame 110 can be taken down from the support plate 120 to perform the next.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (6)
1. The low-voltage power distribution cabinet body assembling and correcting device is characterized by comprising a base module (100), wherein the base module (100) is fixedly connected with a first extrusion module (300), a second extrusion module (400), a first correction module (200) and a second correction module (500), the first extrusion module (300) and the first correction module (200) are respectively identical in structure with the second extrusion module (400) and the second correction module (500), the base module (100) comprises a bottom plate (130), a supporting plate (120) is fixedly connected to the top surface of the bottom plate (130), a first hydraulic cylinder (190) is fixedly connected to the inner bottom surface of the bottom plate (130), a piston rod of the first hydraulic cylinder (190) is fixedly connected with a connecting rod (150) which is in sliding connection with the bottom plate (130), two first tooth plates (140) are fixedly connected to two ends of the connecting rod (150), and the two first tooth plates (140) are both in sliding connection with the supporting plate (120) and the bottom plate, two sides of the inner bottom surface of the bottom plate (130) are respectively connected with a second toothed plate (180) in a sliding manner, the second toothed plate (140) is connected with the bottom surface of the supporting plate (120) in a sliding manner, two sides of the inner bottom surface of the bottom plate (130) are positioned between the first toothed plate (140) and the second toothed plate (180), a first rotating shaft (160) is rotatably connected with the bottom surface of the supporting plate (120), a first gear (170) is fixedly sleeved on the side wall of the first rotating shaft (160), and the first toothed plate (140) and the second toothed plate (180) positioned on the same side are in meshing transmission with the first gear;
the first straightening module (200) comprises a straightening plate (210), one ends of two toothed plates (180) and two toothed plates (140) which are positioned outside the bottom plate (130) are fixedly connected with the bottom surfaces of the straightening plates (210) of the first straightening module (200) and the second straightening module (500) respectively, the bottom surfaces of the straightening plates (210) of the first straightening module (200) and the second straightening module (500) are both in sliding connection with the two sides of the top surface of the bottom plate (130), the first extrusion module (300) comprises a first upright column (310) and a second upright column (360), the two ends of the top surface of the bottom plate (130) which are positioned on one side of the straightening plate (300) are fixedly connected with the bottom surfaces of the first upright column (310) and the second upright column (360) respectively, a motor (350) is fixedly connected with the inner bottom surface of the second upright column (360), and a first bidirectional screw rod (330) which is rotatably connected with the inner side surface of the, two-way lead screw (330) of first (300) and second (400) of extrusion module all rotates with backup pad (120) side to be connected, stand one (310) rotates with two (360) medial surface tops of stand to be connected with two (380) of two-way lead screw, one end that two-way lead screw (330) and two (380) of two are located stand two (360) is all fixed the belt pulley (370) of having cup jointed, two belt pulley (370) is connected through belt transmission, two-way lead screw one (330) and two (380) both ends of two (380) of two lead screw close soon respectively and are connected with stripper plate one (320) and stripper plate two (340), stripper plate one (320) and stripper plate two (340) respectively with stand one (310) and two (360) sliding connection.
2. The assembly correction device for the low-voltage power distribution cabinet body according to claim 1, wherein a correction box (220) is fixedly connected to a side surface of the correction plate (210) located on one side of the support plate (120), a second rotating shaft which is rotatably connected with an inner side surface of the correction box (220) is rotatably connected to a side surface of the correction plate (210) located inside the correction box (220), a second gear (290) is fixedly sleeved on two side walls of the rotating shaft, a second L-shaped plate (270) is slidably connected to both a top surface and a bottom surface of the correction box (220), a first L-shaped plate (230) is slidably connected to both outer side surfaces of the correction box (220), a first rack (240) and a second rack (280) are respectively fixedly connected to opposite surfaces of the first L-shaped plate (230) and the second L-shaped plate (270) located inside the correction box (220), and the first rack (240) is slidably connected to the correction, the two first racks (240) and the two second racks (280) are in meshed transmission with the second gear (290).
3. The low-voltage power distribution cabinet body assembly correction device according to claim 2, wherein a fixed seat is fixedly connected to the inner side wall of the correction box (220), a second hydraulic cylinder (260) is fixedly connected to the side surface of the fixed seat, a connecting block (250) is fixedly connected to a piston rod of the second hydraulic cylinder (260), and the side surface of the connecting block (250) is fixedly connected to the side surface of the first rack (240).
4. The assembly correction device for the cabinet body of the low-voltage power distribution cabinet according to claim 1, characterized in that the top surface of the support plate (120) is provided with a cabinet frame (110), and the width and the length of the support plate (120) are respectively the same as those of the cabinet frame (110).
5. The assembly correction device for the cabinet body of the low-voltage distribution cabinet according to claim 1, characterized in that the first toothed plate (140) and the second toothed plate (180) have the same specification.
6. The assembly correction device for the cabinet body of a low-voltage distribution cabinet according to claim 1, characterized in that the distance between the first upright (310) and the opposite surface of the second upright (360) is greater than the width of the support plate (120).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793294.3A CN111900657B (en) | 2020-08-10 | 2020-08-10 | Low-voltage distribution cabinet body assembly correcting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793294.3A CN111900657B (en) | 2020-08-10 | 2020-08-10 | Low-voltage distribution cabinet body assembly correcting device |
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| CN111900657A true CN111900657A (en) | 2020-11-06 |
| CN111900657B CN111900657B (en) | 2022-04-15 |
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| CN113286460A (en) * | 2021-04-07 | 2021-08-20 | 东华工程科技股份有限公司 | Multi-interface explosion-proof and high-protection-level industrial communication equipment |
| CN116706746A (en) * | 2023-05-30 | 2023-09-05 | 扬州市庆源电气成套设备有限公司 | Installation and construction device and technology for large-scale port electromechanical control cabinet |
| CN116706746B (en) * | 2023-05-30 | 2024-04-12 | 扬州市庆源电气成套设备有限公司 | Installation and construction device and technology for large-scale port electromechanical control cabinet |
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| CN107634469A (en) * | 2015-01-23 | 2018-01-26 | 中国电力科学研究院 | Lower-cost switch touching thrum spring changes specific purpose tool |
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| CN113286460A (en) * | 2021-04-07 | 2021-08-20 | 东华工程科技股份有限公司 | Multi-interface explosion-proof and high-protection-level industrial communication equipment |
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| Publication number | Publication date |
|---|---|
| CN111900657B (en) | 2022-04-15 |
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