CN111082351A - Installation process and equipment of high-voltage switch cabinet - Google Patents
Installation process and equipment of high-voltage switch cabinet Download PDFInfo
- Publication number
- CN111082351A CN111082351A CN201911207603.8A CN201911207603A CN111082351A CN 111082351 A CN111082351 A CN 111082351A CN 201911207603 A CN201911207603 A CN 201911207603A CN 111082351 A CN111082351 A CN 111082351A
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- voltage switch
- switch cabinet
- worm
- phase change
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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 discloses a mounting process and equipment of a high-voltage switch cabinet, which comprises the steps of unpacking inspection, checking the specification and the model of an equipment body, accessories and spare parts according to an equipment packing list; checking the qualified certificate, technical data and specification of the product; hoisting the equipment onto the transportation equipment, and moving the high-voltage switch cabinet to a specified position by the transportation equipment; placing the solid phase change block below a high-voltage switch cabinet, and moving the transportation equipment out of the high-voltage switch cabinet; the phase change block is changed from a solid state to a liquid state, and the height of the high-voltage switch cabinet is gradually reduced until the phase change block is contacted with the basic section steel; and (4) installing the switch cabinets, namely placing the high-voltage switch cabinets in sequence according to the arrangement of the construction drawing. The invention has the effect of enabling the high-voltage switch cabinet to be in stable contact with the basic section steel.
Description
Technical Field
The invention relates to the field of high-voltage switch cabinet installation methods, in particular to a high-voltage switch cabinet installation process and high-voltage switch cabinet installation equipment.
Background
The high-voltage switch cabinet is equipment which is used for power generation, power transmission, power distribution, electric energy conversion and consumption of an electric power system and plays roles of on-off, control or protection and the like.
At present, the method for installing the high-voltage switch cabinet in place generally comprises the steps of placing the high-voltage switch cabinet on a rolling rod, utilizing manpower to push the high-voltage switch cabinet, prying the high-voltage switch cabinet in place by using a crowbar, possibly causing personal injury and equipment damage in the process of placing in place, failing to meet the construction requirements of lean transformer substations, and simultaneously having low construction efficiency and wasting a large amount of manpower and material resources.
The Chinese patent with the granted publication number of CN105870824B discloses a high-voltage switch cabinet in-place device, which comprises a support frame, wherein the rear end of the support frame is provided with a jacking support, the jacking support is provided with a hydraulic jacking device and an operating handle, a jacking plate is arranged above the hydraulic jacking device, and the bottoms of the front end and the rear end of the jacking plate are respectively provided with a transmission rack; an adjusting shaft is rotatably arranged in the supporting frame, an adjusting shaft transmission gear is arranged on the adjusting shaft, and the front end of the adjusting shaft is detachably connected with an adjusting handle; a transmission shaft parallel to the adjusting shaft is rotatably arranged below the jacking plate in the supporting frame, a transmission shaft transmission gear is arranged in the middle of the transmission shaft, and the transmission shaft transmission gear is in transmission connection with the adjusting shaft transmission gear through a chain; the rack transmission gears are respectively installed at the two ends of the transmission shaft, and the high-voltage switch cabinet can be conveniently and quickly moved by the scheme.
The above prior art solutions have the following drawbacks: when the surface of the existing in-place device contacting with the high-voltage switch cabinet is too high, and the high-voltage switch cabinet is placed on the basic profile steel, the high-voltage switch cabinet is easy to collide with the basic profile steel in the falling process, and the high-voltage switch cabinet is damaged.
Disclosure of Invention
The invention aims to provide a mounting process and equipment of a high-voltage switch cabinet, which have the effect of enabling the high-voltage switch cabinet to be in stable contact with basic profile steel.
The technical purpose of the invention is realized by the following technical scheme:
the installation process of the high-voltage switch cabinet comprises the steps of unpacking inspection, checking the specification and the model of an equipment body and spare parts according to an equipment packing list; checking the qualified certificate, technical data and specification of the product; hoisting the equipment onto the transportation equipment, and moving the high-voltage switch cabinet to a specified position by the transportation equipment; placing the solid phase change block below a high-voltage switch cabinet, and moving the transportation equipment out of the high-voltage switch cabinet; the phase change block is changed from a solid state to a liquid state, and the height of the high-voltage switch cabinet is gradually reduced until the phase change block is contacted with the basic section steel; and (4) installing the switch cabinets, namely placing the high-voltage switch cabinets in sequence according to the arrangement of the construction drawing.
By adopting the technical scheme, whether the high-voltage switch cabinet meets the standard specified by a drawing is checked, after the high-voltage switch cabinet is checked to be correct, the high-voltage switch cabinet is moved to a specified position by using transportation equipment, the high-voltage switch cabinet is supported by using the phase change block, the transportation equipment is moved out of the high-voltage switch cabinet to enable the phase change block to generate phase change, the phase change block is changed from a solid state to a liquid state, under the pressure action of the high-voltage switch cabinet on the phase change block, the phase change speed of the part of the phase change block in contact with the high-voltage switch cabinet is the fastest, so that the height of the phase change block is reduced, the height of the high-voltage switch cabinet is gradually reduced, at the moment, the friction force between the high-voltage switch cabinet and the phase change block is smaller, the solid phase change block is changed into the liquid state, the position of the high-, and then the switch cabinet is installed and fixed.
The invention is further configured to: the phase change block is of a prismatic table structure, and the surface of the phase change block, which is back to the back along the width direction of the cabinet body, is a plane along the vertical direction.
Through adopting above-mentioned technical scheme, the phase change piece of terrace with edge structure can further ensure that the partial melting speed of phase change piece and high tension switchgear contact is faster than the melting speed of other high parts.
The invention is further configured to: the phase change block is an icicle.
Through adopting above-mentioned technical scheme, the phase transition piece is icicle, and is with low costs, becomes water after the liquefaction and is less to high tension switchgear influence.
The invention is further configured to: and heating the area of the high-voltage switch cabinet close to the phase change block.
By adopting the technical scheme, the phase change of the contact part of the phase change block and the cabinet body can be accelerated by heating the high-voltage switch cabinet, so that the height of the high-voltage switch cabinet is stably reduced.
The invention is further configured to: the angle adjusting device comprises a conveying plate, wherein four supporting legs are rotatably connected to the conveying plate, rollers are connected to the supporting legs, and an angle adjusting mechanism is arranged on the conveying plate and used for adjusting included angles between the supporting legs and the conveying plate;
the angle adjusting mechanism comprises a worm rotatably connected with the conveying plate, a worm wheel is meshed on the worm, a rotating shaft is fixedly arranged on the worm wheel and fixedly connected with the supporting legs, and the axis of the rotating shaft is along the width direction of the conveying plate;
one end of the conveying plate in the length direction is connected with a push rod which drives the conveying plate to move.
Through adopting above-mentioned technical scheme, place high-pressure switch cabinet behind the transport plate, through applying the effort to the push rod, the push rod drives the transport plate and removes, the transport plate removes through the gyro wheel of being connected with the landing leg, the transport plate transportation of being convenient for of setting up of landing leg removes, after the transport plate drives high tension switchgear and removes the assigned position, rotate the worm, the worm drives the worm wheel and rotates, the worm wheel drives the axis of rotation and rotates, the axis of rotation drives the landing leg and rotates, make the gyro wheel at length direction both ends remove mutually on the landing leg, thereby reduce the height of transport plate.
The invention is further configured to: the conveying plate is characterized in that a transverse transmission mechanism is arranged between the adjusting mechanisms on the same side in the width direction of the conveying plate, the transverse transmission mechanism comprises a front rod which is connected with and coaxial with a worm on one of the adjusting mechanisms, a driving gear is fixedly arranged on the front rod, a driven gear is meshed with the driving gear, and a rear rod which is fixed with the worm on the other adjusting mechanism is fixedly arranged on the driven gear.
Through adopting above-mentioned technical scheme, the worm drives the front rod and rotates around self axis when rotating, and the front rod rotates and drives the driving gear and rotate, and the driving gear rotates and drives driven gear and rotates, and driven gear rotates and drives the back pole and rotates around self axis and rotation direction and driving gear rotation opposite direction, and the back pole rotates and drives the worm antiport on another adjustment mechanism who is connected with the back pole to two adjustment mechanisms that realize transport plate length direction both ends drive the gyro wheel on the landing leg and move in opposite directions or back on the back.
The invention is further configured to: and a longitudinal transmission mechanism is arranged between the two adjusting mechanisms at one end of the conveying plate close to the push rod in the length direction, the longitudinal transmission mechanism comprises a driving wheel and a driven wheel which are respectively fixed on the two worms, and conveying belts in a tensioning state are sleeved outside the driving wheel and the driven wheel.
By adopting the technical scheme, when one of the worms is rotated, the worm drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the conveying belt, and the driven wheel drives the other worm to rotate, so that synchronous rotation of the two worms is realized, and synchronous driving between the two adjusting mechanisms in the width direction of the conveying plate is realized.
The invention is further configured to: and the worm is fixedly provided with a driving mechanism for driving the worm to rotate around the axis of the worm, and the driving mechanism comprises a transmission sleeve fixed on the worm.
By adopting the technical scheme, the transmission sleeve is fixed with the worm, and the transmission sleeve rotates around the axis of the worm by applying acting force on the transmission sleeve, so that the worm is driven to rotate around the axis of the worm, and the driving of the driving mechanism on the worm is realized.
The invention is further configured to: the transmission sleeve is provided with an actuating hole, and the transmission sleeve is detachably connected with a transmission rod inserted into the actuating hole.
Through adopting above-mentioned technical scheme, insert the transfer line and actuate the hole after, through exerting the effort along the transmission sleeve axis to the transfer line, can drive the transmission sleeve and rotate, the transfer line can reduce the effort of staff to the transmission sleeve, and is convenient for change and use.
In conclusion, the beneficial effects of the invention are as follows:
1. checking whether the high-voltage switch cabinet meets the standard specified in the drawing, after checking that the high-voltage switch cabinet is correct, moving the high-voltage switch cabinet to a specified position by using transportation equipment, supporting the high-voltage switch cabinet by using a phase change block, moving the transportation equipment out of the high-voltage switch cabinet from bottom to enable the phase change block to generate phase change, wherein the phase change block is changed from a solid state to a liquid state, under the pressure action of the high-voltage switch cabinet on the phase change block, the phase change speed of the contact part of the phase change block and the high-voltage switch cabinet is the fastest, therefore, the height of the phase change block is reduced, the height of the high-voltage switch cabinet is gradually reduced, the friction force between the high-voltage switch cabinet and the phase change block is small, the solid phase change block is changed into liquid, the high-voltage switch cabinet can be pushed by hands to accurately adjust the position of the solid phase change block until the high-voltage switch cabinet is in contact with the basic profile steel fixed on the ground, the high-voltage switch cabinet is stably placed at an appointed position, and then the switch cabinet is installed and fixed;
2. the high-voltage switch cabinet is placed behind a conveying plate, acting force is applied to a push rod, the push rod drives the conveying plate to move, the conveying plate moves through a roller connected with a support leg, the support leg is convenient for the conveying plate to transport and move, when the conveying plate drives the high-voltage switch cabinet to move to a specified position, a worm is rotated, the worm drives a worm wheel to rotate, the worm wheel drives a rotating shaft to rotate, the rotating shaft drives the support leg to rotate, and the rollers at two ends of the support leg in the length direction move back to back, so that the height of the conveying plate is reduced;
3. the phase change block is icicle, so that the cost is low, and the liquefied icicle becomes water and has small influence on the high-voltage switch cabinet.
Drawings
FIG. 1 is a schematic view of the overall use state of the embodiment;
FIG. 2 is a schematic structural diagram of a reclining mechanism in an embodiment;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is a schematic diagram of an arrangement structure of the phase change block below the high-voltage switch cabinet in the embodiment.
In the figure, 1, a transport plate; 11. a push rod; 12. a fixing plate; 13. a side plate; 131. a hole of abdication; 2. a support leg; 21. a roller; 3. an angle adjusting mechanism; 31. a worm; 32. a worm gear; 33. a drive mechanism; 331. a transmission sleeve; 332. a transmission rod; 4. a transverse transmission mechanism; 41. a front bar; 42. a driving gear; 43. a driven gear; 44. a rear bar; 5. a longitudinal transmission mechanism; 51. a driving wheel; 52. a driven wheel; 53. a conveyor belt; 6. a phase change block; 7. high tension switchgear.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples
Referring to fig. 1, the invention discloses a mounting process of a high-voltage switch cabinet, wherein the opening inspection is carried out, and the specification and the model of an equipment body, accessories and spare parts are checked according to an equipment packing list; checking the qualified certificate, technical data and specification of the product. The high voltage switch cabinet 7 should provide national authority detection, identification and type test reports and CCC certification. The inner side of the box door should have a main circuit diagram, a control circuit diagram and complete accessories, the box body is intact and has no corrosion on the surface of each connecting piece.
The equipment is hoisted to the transportation equipment, and the transportation equipment moves the high-voltage switch cabinet 7 to a designated position. The high-voltage switchgear cabinet 7 should be hoisted using a sling. The high-voltage switch cabinet 7 is moved by using the transportation equipment.
And (3) placing the solid phase change block 6 below the high-voltage switch cabinet 7, and removing the transportation equipment from the high-voltage switch cabinet 7.
The phase change block 6 is changed from solid state to liquid state, and the height of the high-voltage switch cabinet 7 is gradually reduced until the phase change block is contacted with the basic section steel fixed on the ground.
And (4) installing the switch cabinets, namely placing the high-voltage switch cabinets 7 in sequence according to the arrangement of the construction drawing. The verticality of the panel and the side surface is aligned when the cabinet is independent. The row of cabinets are positioned in sequence, then the two ends of the cabinet are aligned, then the small wires are hung, and the alignment is carried out one by taking the cabinet surface as the standard. And the alignment is adjusted by adopting 0.5mm iron sheets, and each gasket cannot exceed three sheets at most. The wardrobe body is fixed with the basic section steel. The cabinet body is connected with the cabinet body by galvanized screws, and the cabinet body is connected with the side baffle plates by galvanized screws. Every cabinet is connected with basic shaped steel alone.
Referring to fig. 1 and 2, the equipment for installing the high-voltage switch cabinet comprises a conveying plate 1, wherein the conveying plate 1 is a rectangular plate, four side surfaces of the conveying plate 1 are integrally formed with side plates 13, and the side plates 13 are perpendicular to the conveying plate 1 and are bent downwards. The conveying plate 1 is rotatably connected with four supporting legs 2, the four supporting legs 2 are respectively located at four end corners of the conveying plate 1 and located between the side plates 13 at the connecting positions with the conveying plate 1, the supporting legs 2 are all connected with rollers 21, and the rollers 21 are universal wheels with brakes. The angle adjusting mechanism 3 is arranged on the conveying plate 1, and the angle adjusting mechanism 3 is used for adjusting the included angle between each supporting leg 2 and the conveying plate 1.
Referring to fig. 2 and 3, angle modulation mechanism 3 includes the worm 31 of being connected with transport plate 1 rotation, all set up on two curb plates 13 of transport plate 1 length direction and pass the hole 131 of stepping down of curb plate 13 with two holding worms 31, the cover is equipped with the bearing that outer lane and transport plate 1 are fixed on the worm 31, the meshing has the worm wheel 32 that is located worm 31 below on the worm 31, the worm wheel 32 least significant end is located the curb plate 13 top of transport plate 1 one end dorsad, wear to be equipped with rather than coaxial fixed axis of rotation on the worm wheel 32, the axis of rotation is connected with transport plate 1 rotation, axis of rotation and landing leg 2 fixed connection, the axis of rotation is along transport plate 1 width direction.
The worm 31 is fixedly provided with a driving mechanism 33 for driving the worm 31 to rotate around the axis of the driving mechanism 33, the driving mechanism 33 comprises a transmission sleeve 331 fixed on the worm 31, the side surface of the transmission sleeve 331 is provided with a transmission hole with the axis along the radial direction of the transmission sleeve 331, the transmission sleeve 331 is detachably connected with a transmission rod 332, and the transmission rod 332 can be inserted into the transmission hole to realize the detachable connection with the transmission sleeve 331.
One end of the transport plate 1 in the length direction is hinged with a push rod 11 which can drive the transport plate 1 to move.
A transverse transmission mechanism 4 is arranged between the adjusting mechanisms on the same side of the conveying plate 1 in the width direction, the transverse transmission mechanism 4 comprises a front rod 41 which is connected with and coaxial with the worm 31 on one of the adjusting mechanisms, a driving gear 42 is fixedly arranged on the front rod 41, a driven gear 43 is meshed with the driving gear 42, and a rear rod 44 fixed with the worm 31 on the other adjusting mechanism is fixedly arranged on the driven gear 43.
A longitudinal transmission mechanism 5 is arranged between the two adjusting mechanisms at one end of the transport plate 1 close to the push rod 11 in the length direction, the longitudinal transmission mechanism 5 comprises a driving wheel 51 and a driven wheel 52 which are respectively fixed on the two worms 31, and a conveyor belt 53 in a tensioning state is sleeved outside the driving wheel 51 and the driven wheel 52.
Referring to fig. 4, phase change block 6 is the icicle of terrace with edge structure, and phase change block 6 is provided with two respectively in cabinet body width direction's both sides, and phase change block 6 is along the plane of cabinet body width direction surface that carries on the back mutually for following vertical direction, heats the region that high tension switchgear 7 is close to phase change block 6, can further accelerate phase change block 6 and high tension switchgear 7 contact segment's phase transition speed.
The implementation principle of the above embodiment is as follows:
checking whether the high-voltage switch cabinet 7 meets the standard specified by the drawing, and checking if the high-voltage switch cabinet is correct;
the high-voltage switch cabinet 7 is moved to a designated position by using transportation equipment, the high-voltage switch cabinet is placed on the transportation plate 1, the transportation plate 1 is driven to move by the push rod 11 by applying acting force to the push rod 11, the transportation plate 1 moves through the roller 21 connected with the support legs 2, and the support legs 2 are arranged to facilitate the transportation and movement of the transportation plate 1;
after the transport plate 1 drives the high-voltage switch cabinet 7 to move to a designated position, the four phase change blocks 6 are placed under the high-voltage switch cabinet 7, the worm 31 is rotated, the worm 31 drives the worm wheel 32 to rotate, the worm wheel 32 drives the rotating shaft to rotate, and the rotating shaft drives the supporting legs 2 to rotate, so that the rollers 21 at the two ends of the supporting legs 2 in the length direction move back and forth, the height of the transport plate 1 is reduced, and the phase change blocks 6 are used for supporting the high-voltage switch cabinet 7;
the transportation equipment is moved out of the high-voltage switch cabinet 7 from the bottom, the phase change block 6 is changed into a liquid state, the phase change speed of the phase change block 6 in contact with the high-voltage switch cabinet 7 is the fastest, so that the height of the phase change block 6 is reduced, the height of the high-voltage switch cabinet 7 is gradually reduced, the friction force between the high-voltage switch cabinet 7 and the phase change block 6 is small, the high-voltage switch cabinet 7 can be pushed by a hand to accurately adjust the position of the high-voltage switch cabinet 7 at the moment until the high-voltage switch cabinet 7 is in contact with the basic profile steel fixed on the ground, the high-voltage switch cabinet 7 is stably placed at a specified position, and then the switch cabinet.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. The mounting process of the high-voltage switch cabinet is characterized by comprising the following steps: the method comprises the steps of unpacking inspection, checking the specification and the model of an equipment body and spare parts according to an equipment packing list; checking the qualified certificate, technical data and specification of the product;
the equipment is hoisted to the transportation equipment, and the transportation equipment moves the high-voltage switch cabinet (7) to a specified position;
placing the solid phase change block (6) below the high-voltage switch cabinet (7), and moving the transportation equipment out of the high-voltage switch cabinet (7);
the phase change block (6) is changed from a solid state to a liquid state, and the height of the high-voltage switch cabinet (7) is gradually reduced until the phase change block is contacted with the basic section steel;
and (4) installing the switch cabinets, namely placing the high-voltage switch cabinets (7) in sequence according to the arrangement of the construction drawing.
2. The process for installing a high-voltage switch cabinet according to claim 1, wherein: the phase change block (6) is of a prismatic table structure, and the surface of the phase change block (6) back to back along the width direction of the cabinet body is a plane along the vertical direction.
3. The process for installing a high-voltage switch cabinet according to claim 1, wherein: the phase change block (6) is an icicle.
4. The process for installing a high-voltage switch cabinet according to claim 1, wherein: and heating the area of the high-voltage switch cabinet (7) close to the phase change block (6).
5. The utility model provides a rigging equipment of high tension switchgear which characterized in that: the angle adjusting device comprises a conveying plate (1), wherein four supporting legs (2) are rotatably connected to the conveying plate (1), idler wheels (21) are connected to the supporting legs (2), an angle adjusting mechanism (3) is arranged on the conveying plate (1), and the angle adjusting mechanism (3) is used for adjusting the included angle between each supporting leg (2) and the conveying plate (1);
the angle adjusting mechanism (3) comprises a worm (31) rotatably connected with the conveying plate (1), a worm wheel (32) is meshed on the worm (31), a rotating shaft is fixedly arranged on the worm wheel (32), the rotating shaft is fixedly connected with the supporting legs (2), and the axis of the rotating shaft is along the width direction of the conveying plate (1);
one end of the conveying plate (1) in the length direction is connected with a push rod (11) which drives the conveying plate (1) to move.
6. Installation equipment of a high-voltage switchgear cabinet, according to claim 5, characterized in that: the conveying plate is characterized in that a transverse transmission mechanism (4) is arranged between the adjusting mechanisms on the same side of the width direction of the conveying plate (1), the transverse transmission mechanism (4) comprises a front rod (41) which is connected with a worm (31) on one of the adjusting mechanisms and is coaxial with the worm, a driving gear (42) is fixedly arranged on the front rod (41), a driven gear (43) is meshed on the driving gear (42), and a rear rod (44) fixed with the worm (31) on the other adjusting mechanism is fixedly arranged on the driven gear (43).
7. Installation equipment of a high-voltage switchgear cabinet, according to claim 5, characterized in that: the conveying plate is characterized in that a longitudinal transmission mechanism (5) is arranged between two adjusting mechanisms at one end, close to the push rod (11), of the conveying plate (1) in the length direction, the longitudinal transmission mechanism (5) comprises a driving wheel (51) and a driven wheel (52) which are fixed on the two worms (31) respectively, and conveying belts (53) in a tensioning state are sleeved outside the driving wheel (51) and the driven wheel (52).
8. Installation equipment of a high-voltage switchgear cabinet, according to claim 5, characterized in that: the worm (31) is fixedly provided with a driving mechanism (33) for driving the worm (31) to rotate around the axis of the worm (31), and the driving mechanism (33) comprises a transmission sleeve (331) fixed on the worm (31).
9. Installation equipment for a high-voltage switchgear cabinet, according to claim 8, characterized in that: the transmission sleeve (331) is provided with an actuating hole, and the transmission sleeve (331) is detachably connected with a transmission rod (332) inserted into the actuating hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911207603.8A CN111082351B (en) | 2019-11-29 | 2019-11-29 | Installation process and equipment of high-voltage switch cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911207603.8A CN111082351B (en) | 2019-11-29 | 2019-11-29 | Installation process and equipment of high-voltage switch cabinet |
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| CN111082351A true CN111082351A (en) | 2020-04-28 |
| CN111082351B CN111082351B (en) | 2021-12-28 |
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| CN201911207603.8A Active CN111082351B (en) | 2019-11-29 | 2019-11-29 | Installation process and equipment of high-voltage switch cabinet |
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| CN111864564A (en) * | 2020-07-29 | 2020-10-30 | 陈金清 | Electric power distribution cabinet convenient to installation |
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|---|---|---|---|---|
| CN111864564A (en) * | 2020-07-29 | 2020-10-30 | 陈金清 | Electric power distribution cabinet convenient to installation |
| CN111864564B (en) * | 2020-07-29 | 2022-04-12 | 国网山东省电力公司庆云县供电公司 | Electric power distribution cabinet convenient to installation |
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| Publication number | Publication date |
|---|---|
| CN111082351B (en) | 2021-12-28 |
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