CN210490035U - Track linking transition system and transition docking mechanism thereof - Google Patents
Track linking transition system and transition docking mechanism thereof Download PDFInfo
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- CN210490035U CN210490035U CN201921975310.XU CN201921975310U CN210490035U CN 210490035 U CN210490035 U CN 210490035U CN 201921975310 U CN201921975310 U CN 201921975310U CN 210490035 U CN210490035 U CN 210490035U
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Abstract
The utility model discloses a transition docking mechanism, include: the insulating connecting piece is provided with a track mounting structure matched with the transportation track and conducting bar mounting structures matched with the two sections of butted conducting bars respectively; install in insulating connecting piece's transition and use electrically conductive shell fragment, the transition includes with electrically conductive shell fragment: a power supply part for contacting the transport carrier, and a power take-out part for contacting the conductive strip. The scheme realizes the transition connection of the two sections of conductive strips in the structure, so that the transport carrier realizes the coherent passing at the butt joint, effectively solves the problem of section difference at the butt joint, reduces the problem of noise generated by the transport carrier passing through the butt joint, and avoids the blockage of the transport carrier and even the blockage of a mechanism; meanwhile, the problem of electric power butt joint of the two conductive strips is solved. The utility model also discloses a track of using above-mentioned transition docking mechanism links up transition system.
Description
Technical Field
The utility model relates to a remove power supply technical field, in particular to track links up transition system and transition docking mechanism thereof.
Background
With the rapid development of the transportation industry, the transportation mode of taking electricity from the track bus bars for the carrier is rapidly developed, and the track bus bar is widely applied to the construction industry, the manufacturing industry and the like. The mode makes the transport carrier contact the electrified conducting bar in the track and directly acquire power supply in the transportation process, and the power supply system of the transport carrier is avoided.
However, in the conventional conductive bar track mode, the transportation distance is too large in some occasions, so that the conductive bars need to be butted in a sectional mode to meet the requirement of long-distance transportation.
The bus bars will have inevitable gaps and section differences at the butt joints, which will inevitably cause some jamming and noise when the transportation carrier passes through. In addition, the connection of the electric power at the butt joint of the conductive strips is also a difficult problem.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a transitional docking mechanism, which can eliminate the step difference defect of the bus bar at the docking position, so that the transportation carrier can more smoothly pass through the docking position, thereby reducing the noise problem generated when the transportation carrier passes through the docking position; meanwhile, the problem of electric connection of the two conductive strips at the butt joint position is solved.
In order to achieve the above object, the utility model provides a following technical scheme:
a transitional docking mechanism comprising:
the insulating connecting piece is provided with a track mounting structure used for being matched with the transportation track and a conductive strip mounting structure used for being matched with two sections of butted conductive strips, and the insulating connecting piece can isolate the transportation track from the conductive strips;
install in insulating connecting piece's transition is with electrically conductive shell fragment, transition is with electrically conductive shell fragment includes: the power supply part is used for contacting the transportation carrier, and the electricity taking part is used for contacting the conductive strips, and the power supply part is electrically connected with the electricity taking part.
Preferably, the conductive strip mounting structure includes: the first conductive strip mounting structure and the second conductive strip mounting structure are respectively used for matching with the two sections of butted conductive strips;
the two power taking parts are respectively positioned on the parts, corresponding to the first conductive strip mounting structure and the second conductive strip mounting structure, of the insulating connecting piece;
the power supply portion is electrically connected between the two power take-off portions.
Preferably, the power supply part is an elastic arch bridge structure which is away from the insulating connecting piece, and the elastic arch bridge structure can enable the highest point of the power supply part to be not lower than the conductive surface of the conductive strip before and after being extruded by the transportation carrier.
Preferably, the power supply part and the power taking part are connected into a whole.
Preferably, the distance between the two power supply portions in the assembled state is smaller than the length of the power supply portion.
Preferably, the insulating connecting piece is provided with a clamping groove for mounting the power taking part.
Preferably, the power take-off part has an elastic arch bridge structure facing away from the insulating connecting piece for press-contact fitting with the conductive strip.
Preferably, the conductive strip mounting structure includes:
the conducting bar mounting groove is formed in the insulating connecting piece;
and the conductive strip clamping claw is arranged in the conductive strip mounting groove and is used for being in snap fit with the conductive strip.
Preferably, the bus bar mounting groove is formed in the top of the insulating connector, and the bus bar clamping jaw is arranged upwards;
the rail mounting structure includes: the track clamping jaws are arranged at the bottom of the insulating connecting piece and are used for being matched with the transportation track in a buckling mode, and the track clamping jaws are arranged downwards; and the track jack catch and the conductive strip jack catch are staggered in the transverse direction.
Preferably, the number of the transition conductive elastic pieces is multiple, and at least two of the transition conductive elastic pieces are respectively located at two lateral sides of the track mounting structure.
Preferably, the insulating connection member includes: the two conductive bar mounting structures are respectively used for being correspondingly matched with the two parallel conductive bars one by one;
the number of the conductive elastic pieces for transition is multiple, and at least two conductive elastic pieces for transition are respectively used for contacting two conductive strips in a one-to-one correspondence mode.
A track engaging transition system, comprising: the transportation track still includes: a transitional docking mechanism as described above.
According to the technical scheme, the transition butt joint mechanism provided by the utility model realizes the transition connection of the two conductive strips in structure, and also realizes the transition connection of the two conductive strips in electric power through the connection of the power taking part and the power supply part; and moreover, the transportation carrier is matched with the elastic contact of the power supply part of the conductive elastic sheet for transition, so that the transportation carrier can realize continuous passing at the joint of the two conductive strips, and the problem of section difference of the joint is effectively solved, thereby efficiently reducing the impact noise caused by the transportation carrier passing through the joint and avoiding the transportation jamming of the transportation carrier and even the mechanism jamming.
The utility model also provides a track links up transition system, owing to adopted foretell the foretell linking transition docking mechanism of using, consequently it also has corresponding beneficial effect, specifically can refer to the preceding explanation, no longer gives unnecessary details here.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a transition docking mechanism provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an insulating connecting member according to an embodiment of the present invention;
fig. 3 is a structural side view of a transition docking mechanism provided in an embodiment of the present invention;
fig. 4 is an installation schematic view of a transition conductive elastic piece according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a transition conductive elastic sheet according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a demolding of the insulating connecting member according to an embodiment of the present invention.
Wherein 10 is a transportation rail;
20 is a conductive strip, 21 is a first section of conductive strip, and 22 is a second section of conductive strip;
30 is an insulating connecting piece, 31 is a track jaw, and 32 is a conductive strip jaw;
40 is a conductive elastic sheet for transition, 41 is a power supply part, and 42 is a power taking part;
50 is a gap;
and 60 is a mold.
Detailed Description
Not enough to current busbar butt joint mode design, the utility model designs a linking transition mechanism that is used for busbar and busbar butt joint. The mechanism effectively avoids the problem of section difference generated at the butt joint of the bus bars, greatly reduces the problem of noise generated by a transportation carrier through the butt joint, and solves the problem of electric connection of the butt joint of the two bus bars.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model provides a transition docking mechanism, as shown in FIG. 1, include:
an insulating connector 30, the insulating connector 30 having a rail mounting structure for cooperating with the transportation rail 10 and a bus bar mounting structure for cooperating with the bus bar 20 of the two sections of butt joint, and the insulating connector 30 being capable of isolating the transportation rail 10 from the bus bar 20; it will be understood that the mounting of the insulated connecting members 30 on the transportation rail 10 can be achieved by a rail mounting structure; correspondingly, the butt joint of the two conductive strips 20 on the insulating connecting piece 30 can be realized through the conductive strip mounting structure;
install in insulating connecting piece 30's electrically conductive shell fragment 40 is used in transition, this electrically conductive shell fragment 40 is used in transition includes: a power supply part 41 for contacting the transport carrier, and a power take-out part 42 for contacting the conductive strip 20, the power supply part 41 and the power take-out part 42 being electrically connected.
According to the technical solution, the transition butt-joint mechanism provided by the embodiment of the present invention can make the transportation carrier realize coherent passing at the butt-joint position of the two conductive strips 20 based on the transition effect of the transition conductive elastic sheet 40 between the two conductive strips 20, thereby effectively solving the problem of section difference at the butt-joint position, and the transition conductive elastic sheet 40 can deform when receiving the pressure of the transportation carrier, so as to reduce the pressure brought by the carrier, thereby playing the role of damping and reducing noise, and avoiding jamming during transportation and even mechanism jamming; through the connection action of the power taking part 41 and the power supply part 42, the transitional connection of the two conductive strips 20 on the power is also realized, and the reliability of the power connection can be enhanced.
Specifically, the conductive strip mounting structure includes: a first conductive strip mounting structure and a second conductive strip mounting structure respectively used for matching with the two sections of butted conductive strips 20 so as to achieve the effect of transitionally connecting the two sections of conductive strips 20;
the two power taking parts 42 are respectively located on the insulating connector 30 corresponding to the first conductive strip mounting structure and the second conductive strip mounting structure, such as the left half part and the right half part shown in fig. 4, so that the two power taking parts 42 can be in one-to-one contact fit with the two conductive strips 20;
as shown in fig. 5, the power supply portion 41 is electrically connected between the two power taking portions 42 to electrically connect the two conductive strips 20 at the butt joint. In the present embodiment, the first conductive strip mounting structure and the second conductive strip mounting structure of the insulating connector 30 are used to realize the transition connection between the two conductive strips 20; and the transition connection of the two conductive strips 20 on the power can be realized by the respective alignment contact of the two power taking parts 42 and the connection of the power supply part 41. Moreover, the elastic contact matching of the transportation carrier and the power supply part 41 of the conductive elastic sheet 40 for transition can lead the transportation carrier to realize continuous passing at the butt joint of the two conductive strips 20, thereby effectively solving the problem of section difference at the butt joint, efficiently reducing the impact noise caused by the transportation carrier passing through the butt joint, and avoiding the transportation jamming of the transportation carrier and even the mechanism jamming.
Further, as shown in fig. 4, the power supply portion 41 is an elastic arch bridge structure facing away from the insulating connector 30, and the elastic arch bridge structure enables the highest point of the power supply portion 41 to be not lower than the conductive surface of the conductive strip 20 before and after being pressed by the transportation carrier, so that the transportation carrier keeps contact with the power supply portion 41 when passing through the butt joint, which is helpful to improve the reliability of the electric power connection between two sections of conductive strips 20. In this scheme, as shown in fig. 5, power supply portion 41 and power taking portion 42 are connected as an organic whole, help strengthening transition with electrically conductive shell fragment 40's overall structure intensity, do benefit to moreover and promote the reliability that power supply portion 41 and power taking portion 42 are electrically connected.
Preferably, the distance between the two power supply portions 42 in the assembled state is smaller than the length of the power supply portion 41, so that the power supply portion 41 forms an elastic arch bridge structure away from the insulating connector 30 to ensure that the transportation carrier is in elastic contact with the power supply portion 41. Namely, the elastic deformation of the power supply part 41 is utilized to slow down the moving pressure of the transportation carrier so as to achieve the effects of shock absorption and noise reduction; moreover, the elastic contact between the power supply part 41 and the transport carrier can prevent the transport carrier from passing through the butt joint gap of the two conductive strips 20, thereby effectively eliminating the section difference problem of the two conductive strips 20 at the butt joint position, and further ensuring the smooth operation of the transport carrier.
In order to further optimize the above technical solution, as shown in fig. 4, the insulating connector 30 is provided with a slot for mounting the power taking part 42, so as to realize the fixed assembly of the transition conductive elastic sheet 40. In the scheme, the transition conductive elastic sheet 40 adopts a clamping assembly mode, which is beneficial for the power supply part 41 to form an elastic arch bridge structure, so that the power supply part 41 and the transportation carrier can form elastic contact matching; and based on this mode of assembly, can also make the structure of this mechanism compacter.
In this embodiment, as shown in fig. 4, the electricity-taking portion 42 has an arch bridge elastic structure deviating from the insulating connecting member 30 for being in press-contact fit with the conductive strip 20, and is designed so as to increase the tightness between the conductive strip 20 and the electricity-taking portion 42, thereby further enhancing the reliability of the electrical connection between the two conductive strips 20 at the butt joint.
Preferably, as shown in fig. 4, the conductive strip mounting structure includes:
the bus bar mounting groove is arranged on the insulating connecting piece 30 so as to realize the limit mounting of the bus bar 20; accordingly, the electricity taking part 42 is located on the side wall of the bus bar installation groove, so as to be convenient for contacting and matching with the side part of the bus bar 20;
and a conductive strip claw 32 disposed in the conductive strip mounting groove for snap-fitting with the conductive strip 20 to realize the snap-fitting of the conductive strip 20. In this scheme, choose for use conducting strip jack catch 32 as the connection structure of conducting strip 20 and insulating connector 30, can adapt to the structural feature of conducting strip 20 bottom die cavity to realize the quick installation of conducting strip 20. I.e. the conductor strip 20 can be snapped onto the insulating connector 30 by means of the conductor strip snap 32.
Specifically, the bus bar mounting groove is opened at the top of the insulating connector 30, and the bus bar claw 32 is arranged upward, so that the bus bar 20 is fastened to the insulating connector 30 from top to bottom;
the rail mounting structure includes: set up in insulating connecting piece 30 bottom for with transportation track 10 snap-fit's track jack catch 31, track jack catch 31 sets up downwards, in order to realize the lock installation of insulating connecting piece 30 on transportation track 10, regard as the mounting base of busbar 20 with this, and then played the effect of keeping apart busbar 20 and transportation track 10. In the scheme, the rail clamping jaws 31 are selected as the connecting structure of the insulating connecting piece 30 and the transportation rail 10, and can also be adapted to the structural characteristics of the upper cavity of the transportation rail 10, so that the insulating connecting piece 30 can be rapidly installed on the transportation rail 10; the track claws 31 and the conductive strip claws 32 are staggered in the transverse direction; as shown in fig. 6, since the mold of the jaws needs to be pulled away in the vertical direction of the arrow, only two jaws are staggered to facilitate taking the mold away on both sides, and if the two jaws are on a straight line in the vertical direction, the mold 60 is blocked by the hook portion to be not beneficial to demolding when being taken away, so that the insulating connecting member 30 is convenient to demold up and down when being molded, and the demolding operability is ensured;
further, as shown in fig. 2, the rail jaws 31 and the conductive strip jaws 32 are laterally arranged in a staggered manner, so that the rail jaws 31 are staggered from the back of the conductive strip slot, and thus, a heavy design mode that both the conductive strip jaws 32 and the back of the conductive strip slot are arranged in the conductive strip slot and the rail jaws 31 are arranged on the back of the conductive strip slot is avoided, so as to prevent the structural strength of the insulated connector 30 at the conductive strip slot from being weakened. In addition, the bus bar mounting structure and the rail mounting structure of the insulating connecting member 30 are arranged in an up-and-down manner so as to separate the bus bar 20 from the transportation rail 10.
In the scheme, as shown in fig. 4, the number of the conductive elastic pieces 40 for transition is multiple, and at least two conductive elastic pieces 40 for transition are respectively located at two lateral sides of the track mounting structure, that is, at least two conductive elastic pieces 40 for transition are respectively symmetrically distributed at the left side and the right side of the conductive strip 20, so as to increase the elastic contact area between the conductive elastic pieces 40 for transition and the transportation carrier, and to facilitate enhancing the reliability of the electrical contact between the transportation carrier and the conductive strip 20; moreover, the conductive elastic pieces 40 for transition are distributed on two sides of the conductive strip 20, which is helpful for improving the smoothness of the transportation carrier passing through the butt joint. Of course, in this scheme, a mode of distributing the transition conductive elastic pieces 40 on one side may also be adopted, and details are not described here. Further, the conductive strips 20 in this embodiment may also be multiple groups. For example, two sets of conductive strips 20 (as shown in fig. 1) arranged in parallel are used to construct positive and negative electrodes for electrical conduction of the transport carrier. In general, the number of sets of conductive strips 20 depends on the configuration of the conductive brushes of the transport carrier. Of course, the multiple sets are selected so that the conductive brushes are fully contacted when passing therethrough.
The embodiment of the utility model provides a still provide a track links up transition system, include: the transportation track 10 and the conductive strip 20, further comprising: as described above, the transition butt-joint mechanism is disposed at the butt-joint position of each two adjacent conductive strips 20. Due to the adoption of the technical scheme, the method has corresponding beneficial effects, and specific reference can be made to the foregoing description, so that the detailed description is omitted.
The present solution is further described below with reference to specific embodiments:
as shown in fig. 1, the joining transition mechanism for the conductive strip to the conductive strip is mainly implemented by the following parts: the transport track 10, the conductive strip 20, the insulating connector 30 and the transition conductive spring piece 40.
As shown in fig. 2, the insulating connector 30 is fastened to the metal rail by the rail latch 31, and the conductive strip 20 is fastened to the insulating connector 30 by the conductive strip latch 32, thereby connecting the conductive strip 20 and the metal rail and performing an insulating function.
As shown in fig. 3, the transport carrier transitions from a first conductive strip segment 21 to a second conductive strip segment 22.
When the transport carrier slides from the first conductive strip 21 to the second conductive strip 22, the transport carrier first passes through the conductive elastic piece 40 for transition, and the conductive elastic piece 40 for transition is a bridge-type transition connection structure, so that the difference of the conductive strip butt joint section brought by the butt joint gap 50 can be avoided when the transport carrier passes through. In addition, the transition conductive elastic sheet 40 is deformed when being pressed by the transportation carrier, so that the pressure brought by the transportation carrier is reduced, and the vibration absorption and noise reduction effects are achieved. The deformation of the elastic sheet can be designed according to the pressure brought by the actual carrier and the corresponding change of the elastic quantity, thereby achieving the optimal state of shock absorption and noise reduction.
As shown in fig. 4, the electricity-taking portion 42 of the transition conductive elastic piece 40 has an elastic structure (refer to fig. 5), so that after the conductive strip 20 is mounted, each section will be attached to the electricity-taking portion 42 of the transition conductive elastic piece 40, thereby achieving the electric connection function of two sections of conductive strips.
Compare the current design situation of current track busbar butt joint, the poor problem of section of butt joint department has been solved effectively to the linking transition structure of above busbar butt joint usefulness to reduced the impact noise that the butt joint department brought is crossed to the transportation carrier high-efficiently, the card when avoiding transporting is dun and is died even the mechanism card, and solved the electric power connection problem of two sections busbar butt joints.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. A transitional docking mechanism, comprising:
an insulating connector (30), said insulating connector (30) having a track mounting structure for mating with a transport track (10) and a conductive strip mounting structure for mating with two lengths of docked conductive strips (20), and said insulating connector (30) being capable of isolating said transport track (10) from said conductive strips (20);
install in the electrically conductive shell fragment (40) is used in transition of insulating connecting piece (30), electrically conductive shell fragment (40) is used in transition includes: a power supply portion (41) for contacting a transport carrier, and a power take-off portion (42) for contacting the conductive strip (20), the power supply portion (41) and the power take-off portion (42) being electrically connected.
2. The transition docking mechanism as recited in claim 1, wherein the conductive strip mounting structure comprises: a first conductive strip mounting structure and a second conductive strip mounting structure for mating with the conductive strips (20) of the two sections of butt joint respectively;
the two power taking parts (42) are respectively positioned on the insulating connecting piece (30) corresponding to the parts of the first conductive strip mounting structure and the second conductive strip mounting structure;
the power supply unit (41) is electrically connected between the two power take-off units (42).
3. The transition docking mechanism according to claim 2, characterized in that the power supply part (41) is an elastic arch bridge structure facing away from the insulating connector (30) and enabling the highest point of the power supply part (41) to be no lower than the conductive surface of the conductive strip (20) before and after being pressed by the transport carrier.
4. The transition docking mechanism according to claim 3, wherein the power supply portion (41) and the power take-off portion (42) are connected as a single body.
5. The transition docking mechanism according to claim 3, wherein the assembled state interval of the two power take-off parts (42) is smaller than the length of the power supply part (41).
6. The transition docking mechanism as claimed in claim 1, wherein the insulating connector (30) defines a slot for mounting the power take-off (42).
7. The transition docking mechanism as recited in claim 1, characterized in that the electricity-taking section (42) has a resilient arch bridge structure facing away from the insulating connector (30) for press-contact engagement with the conductive strip (20).
8. The transition docking mechanism as recited in claim 1, wherein the conductive strip mounting structure comprises:
the conducting bar mounting groove is formed in the insulating connecting piece (30);
and the conductive strip clamping jaws (32) are arranged in the conductive strip mounting grooves and are used for being in snap fit with the conductive strips (20).
9. The transition docking mechanism as claimed in claim 8, wherein the conductive strip mounting slot is opened at the top of the insulation connector (30), and the conductive strip latch (32) is disposed upward;
the rail mounting structure includes: the track clamping jaws (31) are arranged at the bottoms of the insulating connecting pieces (30) and are used for being in snap fit with the transportation tracks (10), and the track clamping jaws (31) are arranged downwards; and the track jaw (31) and the conductive strip jaw (32) are staggered in the transverse direction.
10. The transition docking mechanism according to claim 1, wherein the number of the transition conductive clips (40) is plural, and at least two of the transition conductive clips (40) are respectively located at two lateral sides of the rail mounting structure.
11. The transition docking mechanism according to claim 1, wherein the insulating connector (30) comprises: the two conductive bar mounting structures are respectively used for correspondingly matching with the two parallel conductive bars (20) one by one;
the number of the conductive elastic pieces (40) for transition is multiple, and at least two conductive elastic pieces (40) for transition are respectively used for contacting two conductive strips (20) in a one-to-one correspondence mode.
12. A track engaging transition system, comprising: transport rail (10), characterized in that it further comprises: the transitional docking mechanism of any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921975310.XU CN210490035U (en) | 2019-11-15 | 2019-11-15 | Track linking transition system and transition docking mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921975310.XU CN210490035U (en) | 2019-11-15 | 2019-11-15 | Track linking transition system and transition docking mechanism thereof |
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| Publication Number | Publication Date |
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| CN210490035U true CN210490035U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921975310.XU Active CN210490035U (en) | 2019-11-15 | 2019-11-15 | Track linking transition system and transition docking mechanism thereof |
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| CN (1) | CN210490035U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103736A (en) * | 2020-11-12 | 2020-12-18 | 南昌冠东科技有限公司 | Sliding type power socket with power-off protection function |
| CN115377820A (en) * | 2021-05-18 | 2022-11-22 | 常州博瑞电力自动化设备有限公司 | Power cabinet of direct-current transformer |
-
2019
- 2019-11-15 CN CN201921975310.XU patent/CN210490035U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103736A (en) * | 2020-11-12 | 2020-12-18 | 南昌冠东科技有限公司 | Sliding type power socket with power-off protection function |
| CN115377820A (en) * | 2021-05-18 | 2022-11-22 | 常州博瑞电力自动化设备有限公司 | Power cabinet of direct-current transformer |
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