CN113702865A - Transformer substation operation and maintenance detection device - Google Patents
Transformer substation operation and maintenance detection device Download PDFInfo
- Publication number
- CN113702865A CN113702865A CN202110864800.8A CN202110864800A CN113702865A CN 113702865 A CN113702865 A CN 113702865A CN 202110864800 A CN202110864800 A CN 202110864800A CN 113702865 A CN113702865 A CN 113702865A
- Authority
- CN
- China
- Prior art keywords
- detection device
- substation operation
- maintenance detection
- fan
- handheld
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000012423 maintenance Methods 0.000 title claims abstract description 26
- 238000007664 blowing Methods 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 238000007791 dehumidification Methods 0.000 abstract description 7
- 241000238631 Hexapoda Species 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The utility model relates to the technical field of transformer substation operation and maintenance detection, in particular to a transformer substation operation and maintenance detection device, which comprises a bracket, wherein the bracket is provided with a support frame, the bracket is connected with a fan and a storage battery, the support frame is fixedly connected with a suction fan and a collection box, and the fan is connected with an air inlet channel of a handheld rod through a second hose; the handheld rod is internally divided into an air inlet channel area and a lifting area, the lifting area is provided with a lifting device, the top of the handheld rod is provided with a sounding alarm test pencil, and the output shaft of the rotating motor drives the rotation of the screw shaft to realize that the lantern ring drives the base through the ejector rod to realize lifting motion. One handheld rod simultaneously comprises an air inlet channel area and a lifting area, and the handheld rod is adopted to simultaneously realize the steps of dehumidification, deinsectization and electric leakage detection, so that the detection efficiency is greatly improved. When not needing the electric leakage to detect, the electrography can shrink to inside the handheld pole, can not interfere inlet air channel's the dehumidification deinsectization step of blowing, also can not cause the damage to the test pencil.
Description
Technical Field
The utility model relates to a transformer substation operation and maintenance detects technical field, especially relates to a transformer substation operation and maintenance detection device.
Background
The transformer substation is a place for converting voltage and current, receiving electric energy and distributing electric energy in an electric power system. The substations in the power plant are step-up substations, which are used to boost up the electrical energy generated by the generator and feed it into the high-voltage network. In the process of transformer substation even running, the operation and maintenance equipment of transformer substation needs to be maintained and overhauled by regularly utilizing the detection device, the existing detection device is single in function, when the operation and maintenance equipment with a complex structure is detected, the hidden parts of some equipment are not easy to detect, and the operation difficulty of workers is increased.
The inventor finds that in the prior art, the leakage detection is difficult to be carried out on the secret part of the operation and maintenance equipment, and meanwhile, the phenomena of insects, sand and the like can also exist due to the accumulation of the secret part along with time; present detection device can't realize the leakage current of fortune dimension equipment secret position and detect and the unity of dehumidification deinsectization, and the detection procedure is comparatively complicated, and the test pencil exposes outside always simultaneously, causes the damage of test pencil easily, consequently this application provides a transformer substation fortune dimension detection device to solve above-mentioned problem.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a transformer substation operation and maintenance detection device which adopts a handheld rod and can simultaneously complete the steps of dehumidification, deinsectization and electric leakage detection.
The invention adopts the following technical scheme:
a transformer substation operation and maintenance detection device comprises a support, wherein a support frame is arranged on the support, a fan and a storage battery are fixedly connected to the support, a suction fan and a collection box are fixedly connected to the support frame, the collection box is connected with a first hose, and the fan is connected with an air inlet channel of a handheld rod through a second hose;
the inside inlet air duct district and the lift district of dividing into of handheld pole, the lift district is equipped with elevating gear, and the elevating gear top is equipped with the voiced warning test pencil, the inside lift district of handheld pole still is equipped with the baffle, and handheld pole top is equipped with the blower housing.
Furthermore, the lifting device comprises a rotary motor fixedly connected with the bottom in the handheld rod, an output shaft of the rotary motor is connected with the screw shaft, the output shaft drives the screw shaft to rotate, a fixed seat is arranged below the partition plate, and the screw shaft is connected with the fixed seat.
Furthermore, the lifting device further comprises two ejector rods, a sleeve ring and a base, the sleeve ring is in threaded connection with the screw shaft, the two ejector rods are fixedly connected with the sleeve ring, the other ends of the two ejector rods penetrate through the partition plate and are fixedly connected with the base, and the rotation of the screw shaft can realize that the sleeve ring drives the base to realize lifting motion through the ejector rods.
Furthermore, the storage battery on the support is connected with the suction fan through a lead and the fan, and simultaneously supplies power to the fan and the suction fan.
Furthermore, the suction fan is connected with the collecting box through an air pipe and is used for enabling the inside of the collecting box to form a negative pressure area, and the collecting box can also be connected with an air inlet channel of the handheld rod through a first hose.
Furthermore, the blowing cover is provided with a lighting lamp which is controlled by a control switch on the hand-held rod.
Further, the support still includes the universal wheel, sets up in support bottom plate below, and the universal wheel is installed on the bottom plate four corners, and quantity is four.
Furthermore, a pushing handle is arranged above the support, and an insulating sleeve wraps the pushing handle.
Furthermore, a filter screen is arranged in the collecting box, and a sealing cover is arranged at the top of the collecting box.
Furthermore, the screw shaft is rotatably connected with the fixed seat, and the ejector rod and the lantern ring are of an integral structure.
Compared with the prior art, the invention has the beneficial effects that:
1. this fortune of transformer substation dimension detection device, a handheld pole include inlet air channel district and lift district simultaneously, can adopt a handheld pole to realize dehumidification deinsectization and leakage detection step simultaneously, and detection efficiency improves greatly.
2. The sound alarm test pencil is arranged in the lifting area, when the electric leakage detection is not needed, the test pencil can be retracted into the handheld rod, the air blowing, dehumidifying and deinsectizing steps of the air inlet channel cannot be interfered, the sound alarm test pencil cannot be damaged, when the electric leakage detection is needed, the test pencil is extended out of the air blowing cover through the rotating motor to perform the electric leakage detection, meanwhile, the illuminating lamp on the air blowing cover can provide illumination, and therefore the operation and maintenance equipment can be conveniently detected.
3. The suction fan can also enable the collecting box connected with the suction fan through an air pipe to form negative pressure through work, so that the invention can realize air blowing, and can also selectively recycle insect corpses, small stones and the like into the collecting box.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the hand-held lever of the present invention;
in the figure: 1. a support; 2. a universal wheel; 3. a storage battery; 4. a fan; 5. a suction fan; 6. a collection box; 7. a filter screen; 8. a hand-held wand; 9. a rotating electric machine; 10. an air inlet channel; 11. a top rod; 12. a screw shaft; 13. a fixed seat; 14. a base; 15. a sound alarm test pencil; 16. a blower housing; 17. a control switch; 18. a support frame; 19. a first hose; 20. a second hose; 21. a collar; 22 a pushing handle; 23. an illuminating lamp; 24. an air tube; 25 a partition plate.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Example 1
Referring to fig. 1-2, an embodiment of the present invention is shown: a transformer substation operation and maintenance detection device comprises a support 1, wherein a support frame 18 is arranged on the support 1, the support frame 18 is used for supporting a suction fan 5 and a collection box 6, a fan 4 and a storage battery 3 are fixedly connected on the support 1, the collection box 6 is connected with a first hose 19, the fan 4 is connected with an air inlet channel of a handheld rod 8 through a second hose 20 to realize air blowing, air can be blown out from an air blowing cover 16 at the top of the handheld rod 8 through the air inlet channel 10, the storage battery 3 on the support 1 is connected with the suction fan 5 through a wire and the fan 4 and supplies power to the fan 4 and the suction fan 5, the suction fan 5 is connected with the collection box 6 through an air pipe 24 to form a negative pressure area inside the collection box 6, universal wheels 2 are arranged at the bottom of the support 1 and are mounted at four corners of a bottom plate, pushers 22 are arranged above the support 1, insulating sleeves wrap the pushers 22 to prevent electric leakage accidents, and the detection device can be moved through the pushers 22, the operation and maintenance equipment in different areas can be conveniently detected.
The interior of the handheld rod 8 is divided into an air inlet channel area and a lifting area, the lifting area is provided with a lifting device, the top of the lifting device is provided with a sounding alarm test pencil 15, the lifting area in the handheld rod 8 is also provided with a partition plate 25, the top end of the handheld rod 8 is provided with a blower cover 16, the lifting device comprises a rotating motor 9 fixedly connected with the bottom in the handheld rod 8, the output shaft of the rotating motor is connected with a screw shaft 12, the rotation of the rotating motor can realize that the output shaft drives the screw shaft 12 to rotate, a fixed seat 13 is arranged below the clapboard 25, the screw shaft 12 is connected with the fixed seat 13, the lifting device also comprises two ejector rods 11, a lantern ring 21 and a base 14, a sounding alarm test pencil 15 is arranged above the base 14, the lantern ring 21 is in threaded connection with the screw shaft 12, when the screw shaft 12 rotates, the lantern ring 21 can drive the base 14 to move up and down through the ejector rod 11, so that the purpose of extending the sounding alarm test pencil 15 out of the blowing cover 16 is achieved.
Two ejector pins 11 and lantern ring 21 fixed connection, baffle 25 and base 14 fixed connection can be passed to the other end of two ejector pins 11, and baffle 25 can not influence the up-and-down motion of ejector pin 11, bloies to be equipped with light 23 on the cover 16, controls through control switch 17 on the handheld pole 8, can assist the illumination when detecting transformer substation's fortune dimension equipment secret position.
The working principle is as follows: when the transformer substation operation and maintenance equipment is detected and monitored, the detection device is pushed to a working area through the push handle 33, a worker operates the handheld rod 8 to enter a secret part of the operation and maintenance equipment, when dehumidification is needed, the fan 4 is started, generated wind is blown out from the air inlet channel 10 of the handheld rod 8 through the second hose 20 and can be dehumidified by wind, meanwhile, sundries such as insect corpses and stones can be blown away to avoid influencing the electric leakage detection of the secret part, after the treatment is finished, the rotating motor 9 is started, the base 14 is lifted through the rotation of the spiral shaft 12, the audible alarm test pencil 15 is driven to extend out of the air blowing cover 16, so that the electric leakage detection is carried out, the detection condition can be judged according to the sound of the audible alarm test pencil 15, when the light of the secret part is insufficient, the illuminating lamp 23 on the air blowing cover 16 is realized through the control switch 17 on the handheld rod 8, after the use, the sound alarm test pencil 15 is retracted into the hand-held rod 8 again, so that the damage of the sound alarm test pencil 15 is prevented, and the steps of blowing, dehumidifying and deinsectizing of the air inlet channel 10 cannot be interfered.
Example 2
According to actual conditions, when the secret position insect corpse of fortune dimension equipment of transformer substation, debris such as pebble are when more, in order to avoid the continuation accumulation of debris, select the inlet air duct 10 of the handheld pole 8 of first hose 19 connection with collecting box 6, start suction fan 5, suction fan 5 passes through trachea 24 and is connected with collecting box 6, form the negative pressure in collecting box 6 department, thereby can realize the insect corpse, the pebble is under the negative pressure, inhale to collecting box 6 in, can realize the clearance to the secret position debris of fortune dimension equipment, 6 tops of collecting box are equipped with sealed lid, can regularly clear up debris, 6 left sides of collecting box are equipped with filter screen 7, prevent that debris from entering into suction fan 5 through trachea 24, cause the machine to damage. The handheld rod comprises the air inlet channel area and the lifting area, the steps of dehumidification, deinsectization and electric leakage detection can be realized by adopting the handheld rod, and the detection efficiency is greatly improved.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the foregoing embodiments or equivalent substitutions for some technical features, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (10)
1. A transformer substation operation and maintenance detection device comprises a support and is characterized in that a support frame is arranged on the support, a fan and a storage battery are fixedly connected to the support frame, a suction fan and a collection box are fixedly connected to the support frame, the collection box is connected with a first hose, and the fan is connected with an air inlet channel of a handheld rod through a second hose;
the inside inlet air duct district and the lift district of dividing into of handheld pole, the lift district is equipped with elevating gear, and the elevating gear top is equipped with the voiced warning test pencil, the inside lift district of handheld pole still is equipped with the baffle, and handheld pole top is equipped with the blower housing.
2. The substation operation and maintenance detection device of claim 1, wherein the lifting device comprises a rotary motor fixedly connected to the bottom of the handheld rod, an output shaft of the rotary motor is connected with a screw shaft, the output shaft drives the screw shaft to rotate, a fixed seat is arranged below the partition plate, and the screw shaft is connected with the fixed seat.
3. The substation operation and maintenance detection device of claim 2, wherein the lifting device further comprises two ejector rods, a sleeve ring and a base, the sleeve ring is in threaded connection with the screw shaft, the two ejector rods are fixedly connected with the sleeve ring, the other ends of the two ejector rods penetrate through the partition plate and are fixedly connected with the base, and rotation of the screw shaft can realize that the sleeve ring drives the base to realize lifting movement through the ejector rods.
4. The substation operation and maintenance detection device of claim 1, wherein the storage battery on the bracket is connected with the suction fan through a lead and the fan, and supplies power to the fan and the suction fan.
5. The substation operation and maintenance detection device of claim 1, wherein the suction fan is connected with the collection box through an air pipe for forming a negative pressure region inside the collection box, and the collection box is also connected with the air inlet channel of the handheld rod through a first hose.
6. The substation operation and maintenance detection device of claim 1, wherein the blowing cover is provided with a lighting lamp and is controlled by a control switch on the handheld rod.
7. The substation operation and maintenance detection device of claim 1, wherein the support further comprises universal wheels arranged below a bottom plate of the support, the universal wheels are arranged at four corners of the bottom plate, and the number of the universal wheels is four.
8. The substation operation and maintenance detection device of claim 1, wherein a push handle is arranged above the support, and an insulation sleeve is wrapped on the push handle.
9. The substation operation and maintenance detection device of claim 1, wherein a filter screen is arranged inside the collection box, and a sealing cover is arranged at the top of the collection box.
10. The substation operation and maintenance detection device of claim 2, wherein the screw shaft is rotatably connected with the fixed seat, and the top rod and the lantern ring are of an integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110864800.8A CN113702865A (en) | 2021-07-29 | 2021-07-29 | Transformer substation operation and maintenance detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110864800.8A CN113702865A (en) | 2021-07-29 | 2021-07-29 | Transformer substation operation and maintenance detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113702865A true CN113702865A (en) | 2021-11-26 |
Family
ID=78650936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110864800.8A Pending CN113702865A (en) | 2021-07-29 | 2021-07-29 | Transformer substation operation and maintenance detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113702865A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872764A (en) * | 2017-03-21 | 2017-06-20 | 成都振中电气有限公司 | A kind of method to test pencil rain cover |
| CN108535663A (en) * | 2018-06-27 | 2018-09-14 | 芜湖衡西微量计量科技有限公司 | A kind of battery processing electricity consumption force checking device |
| CN208172142U (en) * | 2018-05-21 | 2018-11-30 | 山东国华电力技术有限公司 | A kind of portable power equipment generaI investigation device |
| CN208270651U (en) * | 2018-05-15 | 2018-12-21 | 保定贝西电力科技有限公司 | A kind of resistance meter that electric operating uses |
| CN208944746U (en) * | 2018-09-22 | 2019-06-07 | 四川宇点电子科技有限责任公司 | A kind of dedusting electroprobe |
| CN209375012U (en) * | 2018-11-20 | 2019-09-10 | 孟金国 | A kind of power supply bureau's livewire work operating stick |
| CN210071928U (en) * | 2019-05-06 | 2020-02-14 | 宏和机电工程有限公司 | Multifunctional power grid power distribution test pencil |
| CN212011886U (en) * | 2020-06-02 | 2020-11-24 | 钱明 | Secret position inspection device of fortune dimension equipment of transformer substation |
| CN112415305A (en) * | 2020-11-03 | 2021-02-26 | 商丘工学院 | Special tool for weak current debugging |
| CN213122100U (en) * | 2020-09-30 | 2021-05-04 | 钟兴 | Transformer substation patrols and maintains auxiliary device |
| CN213633593U (en) * | 2020-12-10 | 2021-07-06 | 赵锐凯 | Portable test pencil for overhauling wind driven generator |
-
2021
- 2021-07-29 CN CN202110864800.8A patent/CN113702865A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872764A (en) * | 2017-03-21 | 2017-06-20 | 成都振中电气有限公司 | A kind of method to test pencil rain cover |
| CN208270651U (en) * | 2018-05-15 | 2018-12-21 | 保定贝西电力科技有限公司 | A kind of resistance meter that electric operating uses |
| CN208172142U (en) * | 2018-05-21 | 2018-11-30 | 山东国华电力技术有限公司 | A kind of portable power equipment generaI investigation device |
| CN108535663A (en) * | 2018-06-27 | 2018-09-14 | 芜湖衡西微量计量科技有限公司 | A kind of battery processing electricity consumption force checking device |
| CN208944746U (en) * | 2018-09-22 | 2019-06-07 | 四川宇点电子科技有限责任公司 | A kind of dedusting electroprobe |
| CN209375012U (en) * | 2018-11-20 | 2019-09-10 | 孟金国 | A kind of power supply bureau's livewire work operating stick |
| CN210071928U (en) * | 2019-05-06 | 2020-02-14 | 宏和机电工程有限公司 | Multifunctional power grid power distribution test pencil |
| CN212011886U (en) * | 2020-06-02 | 2020-11-24 | 钱明 | Secret position inspection device of fortune dimension equipment of transformer substation |
| CN213122100U (en) * | 2020-09-30 | 2021-05-04 | 钟兴 | Transformer substation patrols and maintains auxiliary device |
| CN112415305A (en) * | 2020-11-03 | 2021-02-26 | 商丘工学院 | Special tool for weak current debugging |
| CN213633593U (en) * | 2020-12-10 | 2021-07-06 | 赵锐凯 | Portable test pencil for overhauling wind driven generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105703273A (en) | Robot for coating insulation layer on power distribution aerial bare conducting wire in electrified manner | |
| KR100928743B1 (en) | Cross arm | |
| CN108837165A (en) | A kind of stable type ultraviolet disinfection lamp with dust reduction capability | |
| CN107226398A (en) | A kind of electricity earthing cable loads mobile device | |
| CN109915779A (en) | A kind of solar street light that the mosquito proof for smart city is blocked | |
| CN113702865A (en) | Transformer substation operation and maintenance detection device | |
| CN107975879A (en) | A kind of outdoor air controlling device | |
| CN113375103A (en) | Municipal lighting intelligent street lamp convenient to maintain and method | |
| CN109499761A (en) | A kind of charged device for reducing dust | |
| CN214744731U (en) | Outdoor image acquisition equipment | |
| CN209423849U (en) | A kind of charged device for reducing dust | |
| CN206608875U (en) | A kind of light pole for being easy to change bulb | |
| CN218810202U (en) | Communication engineering pipe well constructor goes up auxiliary device from top to bottom | |
| CN218781239U (en) | Street lamp with deinsectization device | |
| CN206494589U (en) | A kind of substation field detection take-up and pay-off device | |
| CN214172465U (en) | Portable safety protection device | |
| CN220040565U (en) | Electric energy metering box with high safety performance | |
| CN205330271U (en) | Extendible security fence of transformer substation device | |
| CN113644791B (en) | Winding equipment for motor stator core | |
| CN213686312U (en) | Multifunctional building energy-saving lamp | |
| CN111726739B (en) | Self-generating communication broadcasting station convenient to install | |
| CN219320470U (en) | Transformer substation operation and maintenance detection device | |
| CN211046039U (en) | Intelligent high-frequency direct-current power supply cabinet | |
| CN215468681U (en) | Flame cutting device for rear axle housing body | |
| CN219606984U (en) | Construction lighting equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |