CN216188934U - Transfer mechanism - Google Patents
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- CN216188934U CN216188934U CN202121490520.7U CN202121490520U CN216188934U CN 216188934 U CN216188934 U CN 216188934U CN 202121490520 U CN202121490520 U CN 202121490520U CN 216188934 U CN216188934 U CN 216188934U
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Abstract
The utility model provides a transfer mechanism, which comprises a base; the first shifting jig is assembled on the base through a first linear module arranged along the X direction; the first transfer tool comprises: a frame body; two second linear modules arranged along the Z direction and positioned on the frame body; the first supporting plate is positioned between the two second linear modules and used for supporting a product; two ends of the first support plate are respectively combined and fixed with the moving parts of the two second linear modules; the first transfer jig also comprises a driving mechanism positioned between the two second linear modules; the drive mechanism includes: the driving part is horizontally arranged in the axial direction of the driving shaft; the first transmission shaft is in transmission connection with the driving piece through a first steering gear; the axis of the first transmission shaft is vertical to the axis of the driving shaft of the driving part in the horizontal plane; the first transmission shaft is configured to drive the moving part of the second linear module to drive the first supporting plate to reciprocate in the Z direction.
Description
Technical Field
The utility model relates to the technical field of screen detection. And more particularly, to a transfer mechanism.
Background
The liquid crystal display is an active matrix liquid crystal display driven by thin film crystal, and is mainly characterized by that it uses current to stimulate liquid crystal molecule to produce point, line and surface matched with back lamp tube to form picture. IPS, TFT, SLCD all belong to LCD's subclass, LCD's theory of operation is: under the action of electric field, the change of the arrangement direction of liquid crystal molecules is utilized to change (modulate) the light transmittance of an external light source, so that electro-optical conversion is completed, and color reproduction of time domain and space domain is completed through different excitations of R, G, B tricolor signals and through red, green and blue tricolor filter films.
The liquid crystal display needs to detect whether various traces caused by uneven brightness exist through mura detection, wherein the simplest judgment method is to switch to a black picture and other gray-scale pictures in a dark room and then detect from various angles, and the liquid crystal display has various mura due to various process defects. But current mura check out test set area is big, and highly too high can't satisfy the high requirement in place, and goes up and down unstably.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides a transfer mechanism which solves the problems that the existing equipment is large in floor area, too high in assembly height, incapable of meeting the requirement of site height and unstable in lifting.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a transfer mechanism, comprising:
a base; and
a first transfer tool assembled on the base through a first linear module arranged along the X direction;
the first transfer tool comprises:
a frame body;
two second linear modules arranged along the Z direction and positioned on the frame body; and
the first supporting plate is positioned between the two second linear modules and used for supporting a product;
two ends of the first support plate are respectively combined and fixed with the moving parts of the two second linear modules;
the first transfer jig also comprises a driving mechanism positioned between the two second linear modules;
the drive mechanism includes:
the driving part is horizontally arranged in the axial direction of the driving shaft; and
the first transmission shaft is in transmission connection with the driving piece through a first steering gear;
the axis of the first transmission shaft is vertical to the axis of the driving shaft of the driving part in the horizontal plane;
the first transmission shaft is configured to drive the moving part of the second linear module to drive the first support plate to reciprocate in the Z direction.
In addition, preferably, the driving mechanism comprises two second transmission shafts, and the two second transmission shafts are respectively in transmission connection with two ends of the first transmission shaft through a second steering gear;
the axes of the two second transmission shafts are perpendicular to the axis of the first transmission shaft in a plane;
the second transmission shaft is configured to drive the moving part of the second linear module to drive the first supporting plate to reciprocate in the Z direction.
Further, it is preferable that an axis of the second transmission shaft is perpendicular to an axis of the first transmission shaft in a horizontal plane.
Furthermore, it is preferable that an axis of the second transmission shaft is perpendicular to an axis of the first transmission shaft in a vertical plane.
In addition, preferably, the rack body comprises a bottom wall and two side walls formed at two opposite ends of the bottom wall;
the two second linear modules are respectively arranged on the inner side wall surfaces of the two side walls in an opposite mode;
the driving piece is fixedly combined on the bottom wall.
In addition, preferably, the second linear module is fixedly combined with the side wall of the frame body through a mounting plate, and an adjusting assembly is arranged between the mounting plate and the side wall of the frame body;
the adjusting assembly comprises a first fixing block fixedly combined with the assembling plate; the second fixing block is fixedly combined with the side wall of the frame body; and the adjusting bolt is used for connecting the first fixing block and the second fixing block.
In addition, preferably, two groups of adjusting assemblies arranged in a Z direction are arranged between the assembling plate and the side wall of the frame body; two sets of adjusting parts are located the same avris of mounting plate.
In addition, preferably, the base comprises a frame; move and carry mechanism still including:
the third linear module is positioned on the frame and arranged along the X direction; and
the second support plate is combined and fixed on the moving part of the third linear module;
the second support plate is positioned above the first transfer jig.
In addition, preferably, the third linear module is located at one side edge of the top of the frame, and the other side edge of the top of the frame comprises a guide rail; one end of the second supporting plate is fixedly combined with the moving part of the third linear module, and the other end of the second supporting plate is positioned on the guide rail.
In addition, preferably, within the stroke range of the first linear module, the first supporting plate can be exposed from the top of the frame;
and in the stroke range of the third linear module, the second support plate comprises an avoidance position which can enable the first support plate to be exposed from the top of the frame.
The utility model has the beneficial effects that:
according to the utility model, the driving part which is horizontally arranged in the axial direction of the driving shaft drives the first driving shaft which is vertical to the driving shaft in the horizontal plane to rotate, and the first driving shaft drives the moving part of the second linear module to reciprocate along the Z direction, so that the first supporting plate reciprocates in the Z direction relative to the frame body, the lifting of the first supporting plate is realized, and the first supporting plate is matched with the first linear module to complete the transfer of a product; through the transmission matching mode, the height of the whole structure in the vertical direction can be effectively reduced, the space occupied by the transfer mechanism is saved, and the whole structure is more stable and reasonable. In order to ensure the synchronous lifting of the moving parts of the two second linear modules, the driving mechanism is matched with the two second linear modules, the driving piece is used for driving the first transmission shaft to rotate by using the first steering gear, and the first transmission shaft drives the moving parts of the two second linear modules to synchronously lift, so that the first supporting plate can horizontally lift between the two second linear modules, and the stability of the first supporting plate is kept. The problem of current equipment area big, the assembly height is too high, can't satisfy the high requirement in place, and go up and down unstably is solved.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the first transfer jig of the present invention.
Fig. 3 is an assembly view of the driving mechanism of the present invention and the frame body.
Fig. 4 is a schematic structural view of the rack body of the present invention.
Fig. 5 is a schematic structural diagram of the adjusting assembly of the present invention.
FIG. 6 is a schematic view of the driving mechanism of the present invention engaged with a second linear module.
Fig. 7 is an assembly view of the drive mechanism of the present invention and a second linear module.
Fig. 8 is a schematic view of a second carrier plate according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In order to solve the problems that the existing equipment occupies a large area, has too high assembly height, can not meet the requirement of site height and is unstable in lifting. The present invention provides a transfer mechanism, as shown in fig. 1 to 8, the transfer mechanism including: a base 10; and a first transfer jig 30 assembled on the base 10 through a first linear module 20 arranged along the X direction; the first transfer jig 30 includes: a frame body 31; two second linear modules 32 located on the frame 31 and arranged along the Z direction; a first carrier plate 33 located between the two second linear modules 32 for carrying the product; two ends of the first supporting plate 33 are respectively combined and fixed with the moving parts of the two second linear modules 32; the first transfer jig 30 further includes a driving mechanism located between the two second linear modules 32; the drive mechanism includes: a driving member 341 arranged horizontally in the axial direction of the driving shaft; a first transmission shaft 343 in transmission connection with the driving member 341 through a first steering gear 342; the axis of the first transmission shaft 343 is perpendicular to the axis of the driving shaft of the driving member 341 in the horizontal plane; the first transmission shaft 343 is configured to drive the moving portion of the second linear module 32 to drive the first supporting plate 33 to reciprocate in the Z direction. The driving member 341, which is horizontally arranged in the axial direction of the driving shaft, drives the first driving shaft 343, which is perpendicular to the driving shaft in the horizontal plane, to rotate, and the first driving shaft 343 drives the moving part of the second linear module 32 to reciprocate along the Z direction, so that the first supporting plate 33 reciprocates in the Z direction relative to the frame body 31, and the first supporting plate 33 is lifted and lowered, and then is matched with the first linear module 20 to complete the transfer of the product; through the transmission matching mode, the height of the whole structure in the vertical direction can be effectively reduced, the space occupied by the transfer mechanism is saved, and the whole structure is more stable and reasonable.
In order to ensure the synchronous lifting of the moving parts of the two second linear modules 32, the motors cannot be respectively arranged on the two second linear modules 32, but the driving mechanism is matched with the two second linear modules 32, the first steering gear 342 is utilized to drive the driving member 341 to drive the first transmission shaft 343 to rotate, the first transmission shaft 343 drives the moving parts of the two second linear modules 32 to synchronously lift, so that the first supporting plate 33 can horizontally lift between the two second linear modules 32, and the stability of the first supporting plate 33 is maintained. It can be understood that the first transmission shaft 343 extends from the first steering gear 342 to two sides, and two ends of the first transmission shaft 343 are respectively engaged with the two second linear modules 32.
The driving member 341 may be a driving motor, and the driving motor includes a rotating shaft, and the rotating shaft is in transmission connection with a first transmission shaft 343 through a first steering gear 342; as will be understood by those skilled in the art, the steering gear includes, but is not limited to, a driving bevel gear and a driven bevel gear which are mutually matched, and specifically, a driving bevel gear is disposed on a rotating shaft of the driving motor, and a driven bevel gear is disposed at an end of the first transmission shaft 343, and the driving motor drives the first transmission shaft 343 to rotate by meshing the driving bevel gear with the driven bevel gear.
Referring to fig. 2, specifically, the first linear module 20 includes a fixed portion arranged along the X direction and a movable portion located on the fixed portion; the frame body 31 of the first transfer jig 30 is coupled and fixed to the moving part of the first linear module 20.
In an alternative embodiment, the driving mechanism includes two second transmission shafts 344, and the two second transmission shafts 344 are respectively in transmission connection with two ends of the first transmission shaft 343 through a second steering gear 345; the axes of the two second transmission shafts 344 are perpendicular to the axis of the first transmission shaft 343 in a plane; the second transmission shaft 344 is configured to drive the moving portion of the second linear module 32 to drive the first supporting plate 33 to reciprocate in the Z direction. The driving member 341 drives the first transmission shaft 343 perpendicular to the driving shaft in the horizontal plane to rotate, and the first transmission shaft 343 drives the two second transmission shafts 344 perpendicular to the first transmission shaft 343 in the horizontal plane to move; the two second transmission shafts 344 drive the moving parts of the two second linear modules 32 to reciprocate along the Z direction, so that the first supporting plate 33 reciprocates in the Z direction relative to the frame body 31, and the lifting of the first supporting plate 33 is realized.
In a specific embodiment, the axis of the second transmission shaft 344 is perpendicular to the axis of the first transmission shaft 343 in a horizontal plane. When the second linear module 32 is a linear module of a synchronous belt structure, the second transmission shaft 344 and the rotating shaft in the fixing portion of the second linear module 32 are both arranged along the X direction, and the second transmission shaft 344 is located at a position parallel to the rotating shaft in the fixing portion of the second linear module 32, in this case, the second transmission shaft 344 and the rotating shaft in the fixing portion of the second linear module 32 can be matched through at least two gears engaged with each other, the second transmission shaft 344 drives the main synchronizing wheel through the rotating shaft to drive the moving portion on the synchronous belt to move, and transmits the driving force of the driving member 341 to the moving portion of the second linear module 32, so as to realize the reciprocating motion of the first supporting plate 33 in the Z direction in the specified stroke of the second linear module 32. In this embodiment, it can be understood that the main synchronizing wheel and the rotating shaft are of an integrated structure; that is, the main synchronizing wheel and the rotating shaft are integrated, and the main synchronizing wheel and the rotating shaft are not separable structures.
In another specific embodiment, referring to fig. 6 and 7, the axis of the second transmission shaft 344 is perpendicular to the axis of the first transmission shaft 343 in a vertical plane. Specifically, when the second linear module 32 is a linear module with a screw structure, the second transmission shaft 344 and the screw in the fixed portion of the second linear module 32 are both arranged along the Z direction, and the second transmission shaft 344 is located at a position parallel to the screw in the fixed portion of the second linear module 32, in this case, the second transmission shaft 344 and the screw in the fixed portion of the second linear module 32 can be matched through at least two gears engaged with each other to transmit the driving force of the driving member 341 to the moving portion of the second linear module 32, so as to realize the reciprocating motion of the first supporting plate 33 in the Z direction within the specified stroke of the second linear module 32.
In a specific embodiment, referring to fig. 3 and 4, the frame 31 includes a bottom wall and two side walls formed at two opposite ends of the bottom wall; the two second linear modules 32 are respectively arranged on the inner side wall surfaces of the two side walls in an opposite mode; the driving member 341 is fixed on the bottom wall. When the first supporting plate 33 is driven by the driving mechanism to reciprocate in the Z direction, the two second linear modules 32 symmetrically disposed on the frame body 31 can make the first supporting plate 33 horizontally and stably lift, so as to avoid the first supporting plate 33 from shifting during the movement process, for example, the first supporting plate 33 can be lifted stably during mura detection, thereby improving the detection accuracy. And the whole structure of the transfer mechanism is more compact and the occupied area is small through the assembly mode.
In this embodiment, referring to fig. 5, the second linear module 32 is fixed to a sidewall of the frame body 31 by a mounting plate 35, and an adjusting assembly 36 is disposed between the mounting plate 35 and the sidewall of the frame body 31; the adjusting assembly 36 includes a first fixing block 361 fixed in combination with the mounting plate 35; a second fixing block 362 fixedly combined with the sidewall of the frame body 31; and an adjusting bolt 363 connecting the first fixing block 361 and the second fixing block 362. Can adjust the straightness that hangs down of second straight line module 32 through above-mentioned setting, specifically, through revolving adjusting bolt 363 soon, can drive first fixed block 361 and realize finely tuning the position of assembly plate 35 in the X side, thereby adjust the position of second straight line module 32 in the X side, guarantee that second straight line module 32 is in vertical state perpendicular to horizontal plane promptly, thereby guarantee that first support plate 33 can carry out the level lift steadily, improve the precision of going up and down, and the operation is convenient for in the aforesaid setting, need not to carry out the dismouting to second straight line module 32, and the time is saved.
Furthermore, two groups of adjusting assemblies 36 arranged in a Z-direction are included between the assembling plate 35 and the side wall of the frame body 31; two sets of adjusting components 36 are located at the upper and lower ends of the same side of the mounting plate 35. By screwing the adjusting bolts 363 of the two sets of adjusting assemblies 36 at the same time, the assembling plate 35 can be displaced integrally, and fine adjustment of the position of the assembling plate 35 in the X direction is realized. Or the positions of the two ends of the assembling plate 35 in the X direction can be finely adjusted by screwing the adjusting bolts 363 of the two sets of adjusting components 36, respectively, so as to adjust the perpendicularity of the second linear module 32.
In a specific embodiment, as shown in fig. 1, the base 10 includes a frame 40 thereon; move and carry mechanism still including: a third linear module 41 arranged in the X direction on the frame 40; and a second supporting plate 42 combined and fixed on the moving part of the third linear module 41; the second supporting plate 42 is located above the first transferring jig 30.
In this embodiment, referring to fig. 8, the third linear module 41 is located at one side edge of the top of the frame 40, and the other side edge of the top of the frame 40 includes a guide rail 43; one end of the second supporting plate 42 is coupled to and fixed to the moving part of the third linear module 41, and the other end is located on the guide rail 43. Specifically, as shown in fig. 1, the second carrier plate 42 is located above the first carrier plate 33. In order to ensure that the third linear module 41 can stably drive the second supporting plate 42 to reciprocate along the X direction, in one embodiment, the other side edge of the top of the frame 40, corresponding to the third linear module 41, includes a guide rail 43, one end of the two ends of the second supporting plate 42 is fixed to the moving portion of the third linear module 41, and the other end of the two ends is fixed to the guide rail 43, the guide rail 43 provides a guiding function for the second supporting plate 42 to reciprocate along the X direction, the guide rail 43 may be in a form of a matching structure of a rail and a slider, and the other end of the second supporting plate 42 is fixed to the slider, which is not limited in the present invention.
In order to lift the first supporting board 33 to the same height as the second supporting board 42. In the present embodiment, within the stroke range of the first linear module 20, the first supporting plate 33 may be exposed from the top of the frame 40; within the range of the third linear module 41, the second supporting board 42 includes an escape position that can expose the first supporting board 33 from the top of the frame 40. By using the staggered transferring manner of the first supporting plate 33 and the second supporting plate 42, when the second supporting plate 42 moves out of the detection position, the first supporting plate 33 moves to the detection position, and the detection efficiency can be remarkably improved by matching the first supporting plate 33 and the second supporting plate 42. Further, in order to enable the first carrier plate 33 to pass through below the second carrier plate 42, the width of the first carrier plate 33 is smaller than that of the second carrier plate 42.
In addition, in a specific implementation process, firstly, the product to be detected is placed on the second supporting plate 42 of the transferring mechanism, the third linear module 41 drives the second supporting plate 42 to move to the detection position along the X direction, then the product to be detected is placed on the first supporting plate 33 of the transferring mechanism, the first linear module 20 drives the first supporting plate 33 to move to the position below the detection position along the X direction, at this time, the second supporting plate 42 leaves the detection position, the driving mechanism drives the second linear module 32, so that the first supporting plate 33 on the moving part of the second linear module 32 moves upwards along the Z direction, the first supporting plate 33 is lifted to the detection position, and the detection of the product is completed. As shown in fig. 1, when the second carrier plate 42 is located at the right side of the transfer mechanism, the position of the second carrier plate 42 is the detection position, and the first carrier plate 33 is located at the lower left of the second carrier plate 42; when the second supporting board 42 moves to the left, the first supporting board 33 moves to the right side to the lower side of the detection position and is lifted to the same height as the second supporting board 42.
In summary, the driving member disposed horizontally in the axial direction of the driving shaft drives the first driving shaft perpendicular to the driving shaft to rotate in the horizontal plane, and the first driving shaft drives the moving portion of the second linear module to reciprocate along the Z direction, so that the first supporting plate reciprocates in the Z direction relative to the frame body, and the first supporting plate is lifted and lowered, and then cooperates with the first linear module to complete the transfer of the product; through the transmission matching mode, the height of the whole structure in the vertical direction can be effectively reduced, the space occupied by the transfer mechanism is saved, and the whole structure is more stable and reasonable. In order to ensure the synchronous lifting of the moving parts of the two second linear modules, the driving mechanism is matched with the two second linear modules, the driving piece is used for driving the first transmission shaft to rotate by using the first steering gear, and the first transmission shaft drives the moving parts of the two second linear modules to synchronously lift, so that the first supporting plate can horizontally lift between the two second linear modules, and the stability of the first supporting plate is kept. The problem of current equipment area big, the assembly height is too high, can't satisfy the high requirement in place, and go up and down unstably is solved.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. A transfer mechanism, comprising:
a base; and
a first transfer tool assembled on the base through a first linear module arranged along the X direction;
the first transfer tool comprises:
a frame body;
two second linear modules arranged along the Z direction and positioned on the frame body; and
the first supporting plate is positioned between the two second linear modules and used for supporting a product;
two ends of the first support plate are respectively combined and fixed with the moving parts of the two second linear modules;
the first transfer jig also comprises a driving mechanism positioned between the two second linear modules;
the drive mechanism includes:
the driving part is horizontally arranged in the axial direction of the driving shaft; and
the first transmission shaft is in transmission connection with the driving piece through a first steering gear;
the axis of the first transmission shaft is vertical to the axis of the driving shaft of the driving part in the horizontal plane;
the first transmission shaft is configured to drive the moving part of the second linear module to drive the first support plate to reciprocate in the Z direction.
2. The transfer mechanism according to claim 1, wherein the driving mechanism comprises two second transmission shafts, and the two second transmission shafts are respectively connected with two ends of the first transmission shaft in a transmission manner through a second steering gear;
the axes of the two second transmission shafts are perpendicular to the axis of the first transmission shaft in a plane;
the second transmission shaft is configured to drive the moving part of the second linear module to drive the first supporting plate to reciprocate in the Z direction.
3. The transfer mechanism according to claim 2, wherein an axis of the second transmission shaft is perpendicular to an axis of the first transmission shaft in a horizontal plane.
4. The transfer mechanism of claim 2 wherein the axis of the second drive shaft is perpendicular to the axis of the first drive shaft in a vertical plane.
5. The transfer mechanism according to claim 1, wherein the frame body comprises a bottom wall and two side walls formed at two opposite ends of the bottom wall;
the two second linear modules are respectively arranged on the inner side wall surfaces of the two side walls in an opposite mode;
the driving piece is fixedly combined on the bottom wall.
6. The transfer mechanism as claimed in claim 5, wherein the second linear module is fixed to the side wall of the frame by a mounting plate, and an adjusting assembly is disposed between the mounting plate and the side wall of the frame;
the adjusting assembly comprises a first fixing block fixedly combined with the assembling plate; the second fixing block is fixedly combined with the side wall of the frame body; and the adjusting bolt is used for connecting the first fixing block and the second fixing block.
7. The transfer mechanism as claimed in claim 6, wherein two sets of adjustment members are disposed between the mounting plate and the side wall of the frame body in a Z-direction; two sets of adjusting parts are located the same avris of mounting plate.
8. The transfer mechanism of claim 1 wherein said base includes a frame thereon; move and carry mechanism still including:
the third linear module is positioned on the frame and arranged along the X direction; and
the second support plate is combined and fixed on the moving part of the third linear module;
the second support plate is positioned above the first transfer jig.
9. The transfer mechanism of claim 8 wherein said third linear module is located at one side edge of said frame top, and said other side edge of said frame top includes a guide rail; one end of the second supporting plate is fixedly combined with the moving part of the third linear module, and the other end of the second supporting plate is positioned on the guide rail.
10. The transfer mechanism of claim 8, wherein the first carrier plate is exposed from the top of the frame within a range of travel of the first linear module;
and in the stroke range of the third linear module, the second support plate comprises an avoidance position which can enable the first support plate to be exposed from the top of the frame.
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CN202121490520.7U CN216188934U (en) | 2021-07-01 | 2021-07-01 | Transfer mechanism |
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CN202121490520.7U CN216188934U (en) | 2021-07-01 | 2021-07-01 | Transfer mechanism |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114770433A (en) * | 2022-05-30 | 2022-07-22 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Capacitor replacing device |
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2021
- 2021-07-01 CN CN202121490520.7U patent/CN216188934U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114770433A (en) * | 2022-05-30 | 2022-07-22 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Capacitor replacing device |
CN114770433B (en) * | 2022-05-30 | 2023-08-29 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Capacitor replacement device |
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