CN114122998A - High-voltage switch cabinet handcart maintenance auxiliary device and using method thereof - Google Patents
High-voltage switch cabinet handcart maintenance auxiliary device and using method thereof Download PDFInfo
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- CN114122998A CN114122998A CN202111426846.8A CN202111426846A CN114122998A CN 114122998 A CN114122998 A CN 114122998A CN 202111426846 A CN202111426846 A CN 202111426846A CN 114122998 A CN114122998 A CN 114122998A
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- handcart
- fixedly connected
- air bag
- switch cabinet
- voltage switch
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
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Abstract
The invention relates to the technical field of high-voltage switch cabinet overhaul, and discloses a high-voltage switch cabinet handcart overhaul auxiliary device and a using method thereof, wherein the high-voltage switch cabinet handcart overhaul auxiliary device comprises a vehicle body assembly and a supporting assembly, the top of the vehicle body assembly is provided with the supporting assembly, the vehicle body assembly comprises a vehicle plate, and the top of the vehicle plate is fixedly connected with symmetrically distributed dumping switches; the top of the vehicle plate is fixedly connected with a storage battery for supplying power; air bag protection components are symmetrically arranged on two sides of the top of the vehicle plate and comprise ejection cylinders, and electromagnets are fixedly connected inside the ejection cylinders; the switch is emptyd in the utilization monitors the tilt state of automobile body, through setting up gasbag protective assembly, when the automobile body is in the tilt state, emptys the work of on-off control gasbag protective assembly, makes the gasbag in the gasbag protective assembly pop out, makes the gasbag protect one side of handcart, and when the handcart emptys, the gasbag cushions the handcart, avoids the handcart to appear damaging.
Description
Technical Field
The invention relates to the technical field of high-voltage switch cabinet overhauling, in particular to a high-voltage switch cabinet handcart overhauling auxiliary device and a using method thereof.
Background
The switch cabinet is an electric device, the external line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, and each branch circuit is arranged according to the requirement. Such as meters, automatic controls, magnetic switches of motors, various alternating current contactors, and the like, some of which are also provided with high-voltage chambers and low-voltage chamber switch cabinets, and high-voltage buses, such as power plants, and some of which are also provided with low-frequency load shedding for keeping main equipment. The main function of the switch gear is to open, close, control and protect the electric equipment in the process of generating, transmitting, distributing and converting electric energy of the power system. The components in the switch cabinet mainly comprise a circuit breaker, a disconnecting switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like. The classification methods of the switch cabinets are various, for example, the switch cabinets can be divided into movable switch cabinets and fixed switch cabinets by the installation mode of the circuit breaker; or according to different cabinet body structures, the cabinet body can be divided into an open type switch cabinet, a metal closed switch cabinet and a metal closed armored switch cabinet; the high-voltage switch cabinet, the medium-voltage switch cabinet, the low-voltage switch cabinet and the like can be divided according to different voltage grades. The method is mainly suitable for various occasions such as power plants, transformer substations, petrochemical industry, metallurgical steel rolling, light industrial textile, industrial and mining enterprises, residential districts, high-rise buildings and the like.
The handcart is a main component in the withdrawable switch cabinet, and generally comprises a PT handcart and a switch (circuit breaker) handcart. The handcart is called a trolley, and the handcart is taken as a switch handcart, and can be pulled out from a switch cabinet by hands after being paved with a guide rail under the condition of switch disconnection so as to be convenient for overhauling or replacing. May be manually pulled out and shaped like a handcart, so called a handcart. The main elements on the handcart are primary electrical equipment such as a circuit breaker, a mutual inductor and the like. It has three positions in the switchgear: work/test/disconnect. The handcart comprises a circuit breaker handcart, a PT handcart, an isolation handcart, a fusing handcart, a metering handcart and the like.
The handcart of high tension switchgear needs regularly to overhaul and maintain, makes the handcart be in stable state, because the handcart is whole heavier, consequently, needs the supplementary handcart that removes the handcart of dedicated automobile body, makes the handcart can remove to overhauing the platform, and among the prior art, the supplementary automobile body of handcart is under the unstable condition of focus, and the automobile body is very easily taken place to empty, leads to the handcart to damage, causes the loss of property.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the auxiliary device for overhauling the handcart of the high-voltage switch cabinet and the using method thereof, which have the advantage of dumping protection and solve the problem that the handcart is damaged and property loss is caused because the handcart body is easily dumped under the condition that the center of gravity of an auxiliary handcart body of the handcart is unstable.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a handcart maintenance auxiliary device for a high-voltage switch cabinet comprises a vehicle body assembly and a supporting assembly, wherein the supporting assembly is mounted at the top of the vehicle body assembly, the vehicle body assembly comprises a vehicle plate, and the top of the vehicle plate is fixedly connected with symmetrically distributed dumping switches;
the top of the vehicle plate is fixedly connected with a storage battery for supplying power;
the top bilateral symmetry of sweep is equipped with the gasbag protection subassembly, the gasbag protection subassembly includes a bullet section of thick bamboo, the inside fixedly connected with electro-magnet of a bullet section of thick bamboo, the top of electro-magnet is equipped with the permanent magnet, the permanent magnet with a bullet section of thick bamboo sliding connection, the electro-magnet with the magnetic pole of permanent magnet opposite side is the same, the last fixed surface of permanent magnet is connected with launches the post, the top fixedly connected with gasbag that launches the post is popped out.
Preferably, the bottom fixedly connected with walking wheel of sweep, the top fixedly connected with lifting base of sweep, lifting base's top fixedly connected with backup pad, all be equipped with a screw thread section of thick bamboo on four angles of backup pad, the inside wall threaded connection of a screw thread section of thick bamboo has adjusting bolt, adjusting bolt's bottom fixedly connected with hand wheel.
By adopting the above scheme, the automobile body is constituteed with the sweep to the walking wheel, and the adjustable supporting component's of lifting pedestal overall height makes the hand wheel drive adjusting bolt rotate on the rotatable adjusting bolt, makes adjusting bolt drive the lifter plate and rises or descend, finely tunes the height of lifter plate, makes its height that adapts to the cabinet door.
Preferably, the supporting component comprises a lifting plate, the bottom of the lifting plate is connected with the top end of the adjusting bolt, a supporting table is fixedly connected to the top of the lifting plate, guide rails are arranged on two sides of the supporting table, and the guide rails are connected with the lifting plate in a sliding mode.
Through adopting above-mentioned scheme, the guide rail is spacing to the base of handcart, and the brace table supports the handcart.
Preferably, the tilt switch is composed of a tilt sensor and a circuit board, the tilt sensor is horizontally mounted on the circuit board, and a working trigger angle of the tilt switch is thirty degrees with reference to a vertical line of the vehicle board.
Through adopting above-mentioned scheme, two topple over the switch and can monitor the tilt state of sweep both sides simultaneously, make to topple over the switch and in time react.
Preferably, the gasbag pop-up piece includes a gasbag section of thick bamboo, the inside fixedly connected with high-pressure gas bomb of a gasbag section of thick bamboo, the inside of high-pressure gas bomb has highly-compressed air, the exit of high-pressure gas bomb is equipped with the solenoid valve, the electrical property input of solenoid valve with the electrical property output electricity of empting the switch is connected, the end of giving vent to anger of solenoid valve is equipped with the gasbag, the gasbag be the rugosity set up in the inside of a gasbag section of thick bamboo, the bullet export has been seted up at the top of a gasbag section of thick bamboo.
Through adopting above-mentioned scheme, when the automobile body takes place to empty, empty the switch and send the signal of telecommunication control solenoid valve and open, make high-pressure air in the high-pressure gas bomb can make the gasbag launch in the twinkling of an eye in getting into the gasbag to pop out a gasbag section of thick bamboo through the ejection opening, make the gasbag when empting, can be in the side of empting of handcart in the twinkling of an eye, make the gasbag protect the handcart.
Preferably, the top symmetry of lifter plate is equipped with the centre gripping subassembly, the centre gripping subassembly includes the curb plate, the lateral wall fixedly connected with grip slipper of curb plate, the inside wall sliding connection of grip slipper has the slider, one side fixedly connected with clamping head of slider, the opposite side fixedly connected with centre gripping spring and the articulated frame of slider.
Through adopting above-mentioned scheme, the clamping head is spacing to the handcart, when empting, cushions the overhead effort in the twinkling of an eye that produces of clamp through the effect of centre gripping spring and articulated frame, and under the further effect of gasbag, the effort that receives on making the handcart can reduce by a wide margin, further realizes the purpose of protection simultaneously.
Preferably, the outer side wall of the clamping head is fixedly connected with a rubber pad.
By adopting the scheme, the rubber pad is in contact with the handcart, so that the friction force between the handcart and the clamping head is improved, and the handcart is not easy to shake.
A use method of an auxiliary device for handcart overhaul of a high-voltage switch cabinet comprises the following steps:
s1: pushing the vehicle body assembly to the bottom of the high-voltage switch cabinet;
s2: adjusting the height of the supporting component to enable the height of the supporting component to be flush with the bottom surface of the cabinet door of the high-voltage switch cabinet;
s3: pulling out the handcart to fix the handcart above the support assembly;
s4: clamping and limiting two sides of the handcart by using the clamping assembly;
s5: meanwhile, the two tilt switches monitor the tilt angles of the left side and the right side of the vehicle body assembly;
s6: when the inclination angle of one side exceeds thirty degrees, the toppling switch of one side controls the air bag protection component on one side to work, so that the air bag protection component on one side is popped to one side of the supporting component, and the air bag protects the handcart.
(III) advantageous effects
Compared with the prior art, the invention provides the high-voltage switch cabinet handcart overhaul auxiliary device and the using method thereof, and the handcart overhaul auxiliary device has the following beneficial effects:
through setting up the switch of empting, utilize to empty the switch and monitor the tilt state of automobile body, through setting up gasbag protective assembly, when the automobile body is in the tilt state, empty the work of on-off control gasbag protective assembly, make the gasbag in the gasbag protective assembly pop out, make the gasbag protect one side of handcart, when the handcart is emptyd, the gasbag cushions the handcart, avoids the handcart to appear damaging.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the body assembly and support assembly of the present invention;
FIG. 3 is a schematic view of the triggering angle of the tilt switch of the present invention;
FIG. 4 is a schematic view of the structure of an airbag protection assembly according to the present invention;
FIG. 5 is a schematic view of the construction of the air bag ejector of the present invention;
FIG. 6 is a schematic view of a clamping assembly according to the present invention.
In the figure: 10. a body component; 11. turning a plate; 12. a traveling wheel; 13. a lifting base; 14. a support plate; 15. a threaded barrel; 16. adjusting the bolt; 17. a hand wheel;
20. a support assembly; 21. a lifting plate; 22. a support table; 23. a guide rail;
30. a tilt switch;
40. a storage battery;
50. an airbag protection assembly; 51. a shooting barrel; 52. an electromagnet; 53. a permanent magnet; 54. ejecting the column; 55. an airbag ejection member; 551. an air bag cylinder; 552. a high pressure gas cylinder; 553. an electromagnetic valve; 554. an air bag; 555. a projectile port;
60. a clamping assembly; 61. a side plate; 62. a clamping seat; 63. a slider; 64. a clamping head; 641. a rubber pad; 65. a clamping spring; 66. and a hinged frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
Example one
A high-voltage switch cabinet handcart maintenance auxiliary device comprises a vehicle body assembly 10 and a supporting assembly 20, wherein the supporting assembly 20 is installed at the top of the vehicle body assembly 10, walking wheels 12 are fixedly connected to the bottom of a vehicle plate 11, a lifting base 13 is fixedly connected to the top of the vehicle plate 11, a supporting plate 14 is fixedly connected to the top of the lifting base 13, threaded cylinders 15 are arranged at four corners of the supporting plate 14, adjusting bolts 16 are connected to inner side wall threads of the threaded cylinders 15, hand wheels 17 are fixedly connected to the bottom ends of the adjusting bolts 16, the supporting assembly 20 comprises a lifting plate 21, the bottom of the lifting plate 21 is connected with the top ends of the adjusting bolts 16, a supporting table 22 is fixedly connected to the top of the lifting plate 21, guide rails 23 are arranged on two sides of the supporting table 22, the guide rails 23 are connected with the lifting plate 21 in a sliding manner, the vehicle body assembly 10 comprises the vehicle plate 11, and tilt switches 30 which are symmetrically distributed are fixedly connected to the top of the vehicle plate 11, the tilt switch 30 is composed of a tilt sensor and a circuit board, the tilt sensor and the circuit board are horizontally installed, and the work trigger angle of the tilt switch 30 is thirty degrees with reference to the vertical line of the vehicle board 11;
a storage battery 40 for supplying power is fixedly connected to the top of the vehicle plate 11;
the airbag protection assemblies 50 are symmetrically arranged on two sides of the top of the vehicle board 11, each airbag protection assembly 50 comprises an ejection cylinder 51, an electromagnet 52 is fixedly connected inside the ejection cylinder 51, a permanent magnet 53 is arranged above the electromagnet 52, the permanent magnet 53 is slidably connected with the ejection cylinder 51, the magnetic poles of the electromagnet 52 and the permanent magnet 53 are the same, the upper surface of the permanent magnet 53 is fixedly connected with an ejection column 54, the top end of the ejection column 54 is fixedly connected with an airbag ejection piece 55, the airbag ejection piece 55 comprises an airbag cylinder 551, a high-pressure gas cylinder 552 is fixedly connected inside the airbag cylinder 551, high-pressure air is arranged inside the high-pressure gas cylinder 552, an electromagnetic valve 553 is arranged at the outlet of the high-pressure gas cylinder 552, the electrical input end of the electromagnetic valve 553 is electrically connected with the electrical output end of the dumping switch 30, an airbag 554 is arranged at the air outlet end of the electromagnetic valve 553, and the airbag 554 is arranged inside the airbag cylinder 551 in a folded manner, the top of the air bag cylinder 551 is provided with an ejection port 555.
Referring to fig. 1-6, the height of the lifting base 13 is adjusted according to the height of the high-voltage switch cabinet, the vehicle body assembly 10 is pushed to the cabinet door of the high-voltage switch cabinet, the hand wheel 17 is rotated after the door is pushed to the cabinet door, the hand wheel 17 drives the adjusting bolt 16 to rotate, the adjusting bolt 16 drives the lifting plate 21 to ascend or descend, the height of the lifting plate 21 is finely adjusted to adapt to the height of the cabinet door, then the lifting plate 21 is locked to the opening of the cabinet door, the vehicle body cannot move, the handcart is pulled above the supporting table 22, the guide rail 23 is moved, the guide rail 23 supports the base of the handcart, and after the handcart is placed, the vehicle body is moved, and the vehicle body is moved to the maintenance platform for maintenance;
when the vehicle body is toppled, the toppling switch 30 sends an electric signal to control the electromagnet 52 to be electrified, so that the electromagnet 52 starts to work, the permanent magnet 53 above the electromagnet 52 instantaneously drives the ejection column 54 to eject due to the principle that like poles repel each other, and the ejection column 54 drives the air bag ejection piece 55 to ascend to the two sides of the handcart;
meanwhile, the dumping switch 30 sends an electric signal to control the solenoid valve 553 to open, so that high-pressure air in the high-pressure air storage bottle 552 can instantly enter the air bag 554 to instantly expand the air bag 554, and the air bag is popped out of the air bag barrel 551 through the ejection opening 555, so that the air bag 554 can be instantly positioned at the dumping side of the handcart when being dumped, and the air bag 554 can protect the handcart.
In this embodiment, the dump switch 30 is of type TS-IR03 and the solenoid valve 553 is of type FA 0520B.
Example two
The function of clamping protection is added on the basis of the first embodiment.
The top symmetry of lifter plate 21 is equipped with clamping assembly 60, and clamping assembly 60 includes curb plate 61, and the lateral wall fixedly connected with grip slipper 62 of curb plate 61, the inside wall sliding connection of grip slipper 62 has slider 63, and one side fixedly connected with clamping head 64 of slider 63, the lateral wall fixedly connected with rubber pad 641 of clamping head 64, the opposite side fixedly connected with clamping spring 65 and the articulated frame 66 of slider 63.
Referring to fig. 1-6, the clamping head 64 limits the handcart, when the handcart is toppled, the instantaneous acting force generated on the clamping head 64 is buffered through the action of the clamping spring 65 and the hinge frame 66, and meanwhile, under the further action of the air bag 554, the acting force on the handcart can be greatly reduced, so that the purpose of protection is further realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a high tension switchgear handcart overhauls auxiliary device, includes automobile body subassembly (10) and supporting component (20), its characterized in that are installed to the top of automobile body subassembly (10): the vehicle body assembly (10) comprises a vehicle plate (11), and the top of the vehicle plate (11) is fixedly connected with symmetrically distributed dumping switches (30);
the top of the vehicle plate (11) is fixedly connected with a storage battery (40) for supplying power;
the top bilateral symmetry of sweep (11) is equipped with air bag protection subassembly (50), air bag protection subassembly (50) are including a bullet section of thick bamboo (51), the inside fixedly connected with electro-magnet (52) of a bullet section of thick bamboo (51), the top of electro-magnet (52) is equipped with permanent magnet (53), permanent magnet (53) with bullet section of thick bamboo (51) sliding connection, electro-magnet (52) with the magnetic pole of permanent magnet (53) opposite side is the same, the last fixed surface of permanent magnet (53) is connected with and launches post (54), the top fixedly connected with air bag of launching post (54) pops out piece (55).
2. The high-voltage switch cabinet handcart overhauling auxiliary device according to claim 1, characterized in that: the bottom fixedly connected with walking wheel (12) of sweep (11), the top fixedly connected with lifting pedestal (13) of sweep (11), the top fixedly connected with backup pad (14) of lifting pedestal (13), all be equipped with screw thread section of thick bamboo (15) on four angles of backup pad (14), the inside wall threaded connection of screw thread section of thick bamboo (15) has adjusting bolt (16), the bottom fixedly connected with hand wheel (17) of adjusting bolt (16).
3. The high-voltage switch cabinet handcart overhauling auxiliary device according to claim 2, characterized in that: the supporting component (20) comprises a lifting plate (21), the bottom of the lifting plate (21) is connected with the top end of the adjusting bolt (16), a supporting table (22) is fixedly connected to the top of the lifting plate (21), guide rails (23) are arranged on two sides of the supporting table (22), and the guide rails (23) are connected with the lifting plate (21) in a sliding mode.
4. The high-voltage switch cabinet handcart overhauling auxiliary device according to claim 1, characterized in that: toppling switch (30) comprises toppling over sensor and circuit board, toppling over the sensor with circuit board horizontal installation, the work trigger angle who topples over switch (30) is for referring to the vertical line thirty degrees of sweep (11).
5. The high-voltage switch cabinet handcart overhauling auxiliary device according to claim 1, characterized in that: the air bag ejection piece (55) comprises an air bag cylinder (551), a high-pressure air storage bottle (552) is fixedly connected to the interior of the air bag cylinder (551), high-pressure air is arranged inside the high-pressure air storage bottle (552), an electromagnetic valve (553) is arranged at an outlet of the high-pressure air storage bottle (552), an electrical input end of the electromagnetic valve (553) is electrically connected with an electrical output end of the dumping switch (30), an air outlet end of the electromagnetic valve (553) is provided with an air bag (554), the air bag (554) is arranged in the air bag cylinder (551) in a folded mode, and an ejection outlet (555) is formed in the top of the air bag cylinder (551).
6. The high-voltage switch cabinet handcart overhauling auxiliary device according to claim 3, wherein: the top symmetry of lifter plate (21) is equipped with clamping component (60), clamping component (60) include curb plate (61), lateral wall fixedly connected with grip slipper (62) of curb plate (61), the inside wall sliding connection of grip slipper (62) has slider (63), one side fixedly connected with clamping head (64) of slider (63), the opposite side fixedly connected with centre gripping spring (65) and articulated frame (66) of slider (63).
7. The high-voltage switch cabinet handcart overhauling auxiliary device according to claim 6, wherein: the outer side wall of the clamping head (64) is fixedly connected with a rubber pad (641).
8. The use method of the high-voltage switch cabinet handcart overhaul auxiliary device is characterized by comprising the following steps of:
s1: pushing the car body assembly (10) to the bottom of the high-voltage switch cabinet;
s2: the height of the supporting component (20) is adjusted to enable the height of the supporting component (20) to be flush with the bottom surface of the cabinet door of the high-voltage switch cabinet;
s3: pulling out the handcart to fix the handcart above the support assembly (20);
s4: clamping and limiting two sides of the handcart by using a clamping assembly (60);
s5: meanwhile, the two tilt switches (30) monitor the tilt angles of the left side and the right side of the vehicle body assembly (10);
s6: when the inclination angle of one side exceeds thirty degrees, the toppling switch (30) of one side controls the air bag protection component (50) of one side to work, so that the air bag protection component (50) of one side is popped to one side of the support component (20), and the air bag protects the handcart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111426846.8A CN114122998A (en) | 2021-11-27 | 2021-11-27 | High-voltage switch cabinet handcart maintenance auxiliary device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111426846.8A CN114122998A (en) | 2021-11-27 | 2021-11-27 | High-voltage switch cabinet handcart maintenance auxiliary device and using method thereof |
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| Publication Number | Publication Date |
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| CN114122998A true CN114122998A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111426846.8A Pending CN114122998A (en) | 2021-11-27 | 2021-11-27 | High-voltage switch cabinet handcart maintenance auxiliary device and using method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115663667A (en) * | 2022-11-01 | 2023-01-31 | 国网安徽省电力有限公司阜阳供电公司 | Anti-toppling device for 35kV switch handcart and using method |
| CN117848739A (en) * | 2024-03-07 | 2024-04-09 | 滨州市检验检测中心(滨州市纺织纤维检验所、滨州市厨具产品质量检验中心) | Vehicle rollover test detection platform |
| CN117848739B (en) * | 2024-03-07 | 2024-05-28 | 滨州市检验检测中心(滨州市纺织纤维检验所、滨州市厨具产品质量检验中心) | Vehicle rollover test detection platform |
-
2021
- 2021-11-27 CN CN202111426846.8A patent/CN114122998A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115663667A (en) * | 2022-11-01 | 2023-01-31 | 国网安徽省电力有限公司阜阳供电公司 | Anti-toppling device for 35kV switch handcart and using method |
| CN117848739A (en) * | 2024-03-07 | 2024-04-09 | 滨州市检验检测中心(滨州市纺织纤维检验所、滨州市厨具产品质量检验中心) | Vehicle rollover test detection platform |
| CN117848739B (en) * | 2024-03-07 | 2024-05-28 | 滨州市检验检测中心(滨州市纺织纤维检验所、滨州市厨具产品质量检验中心) | Vehicle rollover test detection platform |
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