CN113894717A - Cable and joint test operation platform - Google Patents
Cable and joint test operation platform Download PDFInfo
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- CN113894717A CN113894717A CN202111055471.9A CN202111055471A CN113894717A CN 113894717 A CN113894717 A CN 113894717A CN 202111055471 A CN202111055471 A CN 202111055471A CN 113894717 A CN113894717 A CN 113894717A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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Abstract
本发明公开了一种电缆及接头试验操作平台，涉及电力电缆领域，包括支撑机构、卡盘；卡盘安装在支撑机构上；卡盘包括第一转动盘、第二转动盘、夹持孔、卡轴；第一转动盘与支撑机构转动配合；第二转动盘与第一转动盘转动配合；第一转动盘的中心孔与第二转动盘的中心孔相互连通形成夹持孔；卡轴设有多个，各卡轴沿第二转动盘的周向间隔排列，第二转动盘相对于第一转动盘的转动能够带动卡轴沿第二转动盘的径向移动。本发明的优点在于：能够调整电缆或接头的角度，方便夹紧不同尺寸的电缆或接头。
The invention discloses a cable and joint test operation platform, which relates to the field of power cables, and comprises a support mechanism and a chuck; the chuck is mounted on the support mechanism; the chuck comprises a first rotating disk, a second rotating disk, a clamping hole, a clamping shaft; a first rotating disk is rotatably matched with the support mechanism; a second rotating disk is rotatably matched with the first rotating disk; the center hole of the first rotating disk and the center hole of the second rotating disk are communicated with each other to form a clamping hole; There are a plurality of clamping shafts arranged at intervals along the circumferential direction of the second rotating disk. The rotation of the second rotating disk relative to the first rotating disk can drive the clamping shafts to move along the radial direction of the second rotating disk. The advantages of the present invention lie in that the angle of the cable or the joint can be adjusted, and the cables or joints of different sizes can be easily clamped.
Description
Technical Field
The invention relates to the field of power cables, in particular to a cable and joint test operation platform.
Background
With the rapid advance of the power grid construction, the application of the power system is more and more extensive and is distributed in each link of transmission, transformation and distribution. The rapid development of the cable brings about more frequent operations such as the related detection and test of the cable and the joint thereof, such as the disassembly of the cable and the joint, the hidden danger detection, the performance test and the like. The diameters of the power cable and the connector are often large, the power cable and the connector are heavy and easy to slide and are not easy to fix, and due to the fact that the sizes and the lengths of the cable and the connector are not consistent, operation difficulty is often large when relevant tests are conducted, the positions of the cable and the connector are often required to be adjusted in the operation process, and operation is complicated.
Patent document No. CN109839310A discloses a positioning fixture for detecting cable tension, which includes a vertical frame plate, a cable positioning assembly, an auxiliary cable positioning assembly, and a cable positioning assembly and an auxiliary cable positioning assembly structure that are used in cooperation, and can complete the fixing action of the cable to be detected.
Disclosure of Invention
The invention aims to provide a cable and connector test operating platform which can adjust the angle of a cable or a connector and conveniently clamp cables or connectors with different sizes.
The invention solves the technical problems through the following technical means: the cable and joint test operation platform comprises a supporting mechanism (1) and a chuck (4); the chuck (4) is arranged on the supporting mechanism (1); the chuck (4) comprises a first rotating disc (41), a second rotating disc (42), a clamping hole (43) and a clamping shaft (45); the first rotating disc (41) is in rotating fit with the supporting mechanism (1); the second rotary disc (42) is in rotary engagement with the first rotary disc (41); the central hole of the first rotating disc (41) and the central hole of the second rotating disc (42) are communicated with each other to form a clamping hole (43); the clamping shafts (45) are arranged in a plurality of numbers, the clamping shafts (45) are arranged along the circumferential direction of the second rotating disc (42) at intervals, and the second rotating disc (42) can drive the clamping shafts (45) to move along the radial direction of the second rotating disc (42) relative to the rotation of the first rotating disc (41). The first rotating disc rotates relative to the supporting mechanism, so that the whole rotation of the chuck can be realized, and the angle of the cable or the joint can be adjusted; through the rotation of the second rotating disc relative to the first rotating disc, the clamping shafts can be synchronously stretched along the radial direction of the second rotating disc, so that cables or joints with different sizes can be clamped, and the operation is convenient; the cable and joint test operation platform is suitable for occasions where intercepting cables and joints need to be fixed, and provides a portable platform for operations such as dissection, detection and the like of the cables and the joints.
As an optimized technical scheme, a thread structure (421) is arranged on the second rotating disc (42), and the thread structure (421) surrounds the outer ring of the clamping hole (43); each clamping shaft (45) is provided with a sawtooth structure (451), and the sawtooth structures (451) are connected with the thread structures (421) in a matching manner; the cable and connector test operation platform further comprises a limiting mechanism (46), and the limiting mechanism (46) can limit the moving direction of the clamping shaft (45) along the radial direction of the second rotating disc (42). When the second rotating disc rotates relative to the first rotating disc, the sawtooth structures and the thread structures move relatively, the principle is similar to that of relative movement of bolts and nuts, and the clamping shafts stretch out and draw back synchronously along the radial direction of the second rotating disc.
As an optimized technical solution, the thread structure (421) is located on the side of the second rotating disk (42) opposite to the first rotating disk (41); the limiting mechanisms (46) are arranged in a plurality, the limiting mechanisms (46) are arranged along the circumferential direction of the first rotating disc (41) at intervals and are fixedly connected with the first rotating disc (41) respectively, and each limiting mechanism (46) is sleeved outside one clamping shaft (45) and is in sliding fit with the clamping shaft (45).
As an optimized technical scheme, a first clamping groove (411) is formed in one side, back to the second rotating disc (42), of the first rotating disc (41), and the first clamping groove (411) surrounds the outer ring of the clamping hole (43); the supporting mechanism (1) comprises a first protruding block (14) and a fixing knob (15), the first protruding block (14) is embedded in the first clamping groove (411) and is in running fit with the first clamping groove (411), and the fixing knob (15) penetrates through the first protruding block (14) and locks the first protruding block (14) in the first clamping groove (411).
As an optimized technical scheme, a second clamping groove (422) is formed in one side, facing the first rotating disc (41), of the second rotating disc (42), and the second clamping groove (422) surrounds the outer ring of the clamping hole (43); a second protruding block (412) is arranged on one side, facing the second rotating disc (42), of the first rotating disc (41), and the second protruding block (412) is embedded in the second clamping groove (422) and is in rotating fit with the second clamping groove (422).
As an optimized technical scheme, the chuck (4) further comprises a rotating knob (44) and a transmission gear, the rotating knob (44) is rotatably connected to the first rotating disc (41), the transmission gear is fixedly connected to the second rotating disc (42) and faces one side of the first rotating disc (41) and surrounds the outer ring of the clamping hole (43), and teeth of the outer ring of the rotating knob (44) are meshed with the transmission gear.
As an optimized technical scheme, two supporting mechanisms (1) and two chucks (4) are arranged respectively, each chuck (4) is installed on one supporting mechanism (1), and second rotating discs (42) of the two chucks (4) are opposite. Two chucks may grip the two sides of the cable or splice, respectively.
As an optimized technical scheme, the cable and joint test operation platform further comprises a horizontal adjusting mechanism (2), two ends of the horizontal adjusting mechanism (2) are fixedly connected with one supporting mechanism (1) respectively, and the horizontal adjusting mechanism (2) can stretch out and draw back along the horizontal direction. The distance between the two chucks can be adjusted through the horizontal adjusting mechanism, and the cables or the joints with different lengths can be erected and fixed.
As the optimized technical scheme, the horizontal adjusting mechanism (2) comprises a horizontal telescopic rod (21), a horizontal adjusting knob (22) and horizontal transmission teeth, two ends of the horizontal telescopic rod (21) are respectively fixedly connected with the two supporting mechanisms (1), the horizontal adjusting knob (22) is rotatably connected to the moving section of the horizontal telescopic rod (21), the horizontal transmission teeth are fixedly connected to the fixed section of the horizontal telescopic rod (21), and the teeth on the outer ring of the horizontal adjusting knob (22) are meshed with the horizontal transmission teeth.
As an optimized technical scheme, the cable and connector test operation platform further comprises a sliding rail (3), wherein the length direction of the sliding rail (3) is along the horizontal direction; one of the supporting mechanisms (1) is fixedly connected with one end of the sliding rail (3), and the other supporting mechanism (1) is in sliding fit with the sliding rail (3).
The invention has the advantages that:
1. the angle of the cable or the joint can be adjusted, the cable or the joint with different sizes can be conveniently clamped, and a portable platform is provided for operations such as dissection, detection and the like of the cable and the joint.
2. The erection of cables or connectors with different lengths can be realized.
Drawings
Fig. 1 is a schematic structural diagram of a cable and connector test operating platform according to an embodiment of the invention.
FIG. 2 is a schematic view of the height adjustment knob and vertical drive teeth of an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a chuck according to an embodiment of the present invention.
FIG. 4 is a schematic front view of the connection between the first rotating disk, the second rotating disk, the limiting mechanism and the shaft according to the embodiment of the present invention.
FIG. 5 is a schematic front view of a connection relationship between the support mechanism, the first rotary disk and the second rotary disk according to the embodiment of the present invention.
FIG. 6 is a schematic sectional view taken along line A-A showing the connection relationship between the support mechanism, the first rotary disk and the second rotary disk according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all 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.
As shown in fig. 1, the cable and connector test operation platform includes a support mechanism 1, a horizontal adjustment mechanism 2, a slide rail 3, and a chuck 4.
Two supporting mechanisms 1 are arranged, and each supporting mechanism 1 can stretch out and draw back along the vertical direction; two ends of the horizontal adjusting mechanism 2 are respectively fixedly connected with one supporting mechanism 1, and the horizontal adjusting mechanism 2 can stretch out and draw back along the horizontal direction; the length direction of the slide rail 3 is along the horizontal direction, one of the supporting mechanisms 1 is fixedly connected with one end of the slide rail 3, and the other supporting mechanism 1 is in sliding fit with the slide rail 3; the number of the chucks 4 is two, and each chuck 4 is mounted on one support mechanism 1.
The supporting mechanisms 1 comprise vertical telescopic rods 11 and height adjusting knobs 12, each supporting mechanism 1 comprises two vertical telescopic rods 11, and each vertical telescopic rod 11 is provided with one height adjusting knob 12; referring to fig. 2, the supporting mechanism 1 further includes vertical transmission teeth 13, the height adjusting knob 12 is rotatably connected to the moving section of the vertical telescopic rod 11, the vertical transmission teeth 13 are fixedly connected to the fixed section of the vertical telescopic rod 11, and teeth on the outer ring of the height adjusting knob 12 are engaged with the vertical transmission teeth 13; the height adjusting knob 12 is rotated, and the moving section of the vertical telescopic rod 11 can be lifted or lowered through the matching transmission of the height adjusting knob and the vertical transmission gear 13, so that the height of the supporting mechanism 1 is adjusted.
The horizontal adjusting mechanism 2 comprises a horizontal telescopic rod 21, a horizontal adjusting knob 22 and horizontal transmission teeth (not shown); two ends of the horizontal telescopic rod 21 are respectively and fixedly connected with the two supporting mechanisms 1 through connecting rods; the horizontal adjusting knob 22 is rotatably connected to the moving section of the horizontal telescopic rod 21, the horizontal transmission gear is fixedly connected to the fixed section of the horizontal telescopic rod 21, and the gear on the outer ring of the horizontal adjusting knob 22 is meshed with the horizontal transmission gear; the horizontal adjusting knob 22 is rotated, and the moving section of the horizontal telescopic rod 21 can move along the horizontal direction through the matching transmission of the horizontal adjusting knob and the horizontal transmission gear, so that the distance between the two supporting mechanisms 1 is adjusted.
The slide rail 3 comprises two parallel rails, the fixing sections of the two vertical telescopic rods 11 of one supporting mechanism 1 are fixedly connected with the two rails respectively, and the fixing sections of the two vertical telescopic rods 11 of the other supporting mechanism 1 are in sliding fit with the two rails through sliding blocks and sliding grooves respectively.
As shown in fig. 3, the chuck 4 includes a first rotary disk 41, a second rotary disk 42, a holding hole 43, a rotary knob 44, a transmission gear (not shown), a chucking shaft 45, and a limit mechanism 46; the first rotating disk 41 and the second rotating disk 42 are both circular cylinders and are coaxially arranged; the first rotating disc 41 is in running fit with the support mechanism 1; the second rotary disk 42 is in rotary engagement with the first rotary disk 41; referring to fig. 1, each chuck 4 is mounted on a support mechanism 1, and the second rotating discs 42 of the two chucks 4 are opposite; the center hole of the first rotating disk 41 and the center hole of the second rotating disk 42 communicate with each other to form a clamping hole 43; the rotating knob 44 is rotatably connected to the first rotating disk 41, the transmission gear is fixedly connected to one side of the second rotating disk 42 facing the first rotating disk 41 and surrounds the outer ring of the clamping hole 43, and teeth on the outer ring of the rotating knob 44 are meshed with the transmission gear; a rotary knob 44 which is driven by the transmission gear to rotate the second rotary disk 42 relative to the first rotary disk 41; the number of the clamping shafts 45 is three, the clamping shafts 45 are columns with the length direction along the radial direction of the second rotating disc 42, and the clamping shafts 45 are arranged at intervals along the circumferential direction of the second rotating disc 42; the rotation of the second rotating disk 42 relative to the first rotating disk 41 can drive the clamping shaft 45 to move along the radial direction of the second rotating disk 42.
Referring to fig. 4, a thread structure 421 is disposed on a side of the second rotary disc 42 opposite to the first rotary disc 41, the thread structure 421 surrounds the outer ring of the clamping hole 43, a saw tooth structure 451 is disposed on each of the clamping shafts 45, and the saw tooth structures 451 are connected with the thread structure 421 in a matching manner; the number of the limiting mechanisms 46 is three, the limiting mechanisms 46 are arranged at intervals along the circumferential direction of the first rotating disk 41 and are fixedly connected with the first rotating disk 41, and each limiting mechanism 46 is sleeved outside the clamping shaft 45 and is in sliding fit with the clamping shaft 45.
As shown in fig. 5 and 6, a first locking groove 411 is formed on a side of the first rotary disk 41 opposite to the second rotary disk 42, and the first locking groove 411 surrounds the outer ring of the clamping hole 43; the supporting mechanism 1 further comprises a first protruding block 14 and a fixing knob 15, the upper portion of each vertical telescopic rod 11 is fixedly connected with one first protruding block 14, the first protruding blocks 14 are embedded in the first clamping grooves 411 and are in running fit with the first clamping grooves 411, and the fixing knob 15 penetrates through the first protruding blocks 14 and locks the first protruding blocks 14 in the first clamping grooves 411.
A second clamping groove 422 is formed in one side, facing the first rotating disc 41, of the second rotating disc 42, and the second clamping groove 422 surrounds the outer ring of the clamping hole 43; a second protrusion 412 is disposed on a side of the first rotating disk 41 facing the second rotating disk 42, and the second protrusion 412 is embedded in the second engaging groove 422 and rotatably engaged with the second engaging groove 422.
The working principle of the cable and joint test operation platform provided by the invention is as follows: the heights of the two chucks 4 can be adjusted through the two supporting mechanisms 1, so that the height of a cable or a connector can be adjusted according to requirements; the distance between the two chucks 4 can be adjusted through the horizontal adjusting mechanism 2, so that cables or joints with different lengths can be erected and fixed; the integral rotation of the chuck 4 can be realized by the rotation of the first rotating disc 41 relative to the supporting mechanism 1, so as to adjust the angle of the cable or the joint; through the rotation of the second rotating disc 42 relative to the first rotating disc 41, the sawtooth structures 451 and the thread structures 421 can move relatively, the principle is similar to the relative movement of bolts and nuts, and the three clamping shafts 45 can extend and retract synchronously along the radial direction of the second rotating disc 42, so that cables or joints with different sizes can be clamped, and the operation is convenient; the cable and joint test operation platform is suitable for occasions where intercepted cables and joints need to be fixed, and provides a portable platform for operations such as dissection, detection and the like of the cables and the joints.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a cable and experimental operation platform of joint which characterized in that: comprises a supporting mechanism (1) and a chuck (4); the chuck (4) is arranged on the supporting mechanism (1); the chuck (4) comprises a first rotating disc (41), a second rotating disc (42), a clamping hole (43) and a clamping shaft (45); the first rotating disc (41) is in rotating fit with the supporting mechanism (1); the second rotary disc (42) is in rotary engagement with the first rotary disc (41); the central hole of the first rotating disc (41) and the central hole of the second rotating disc (42) are communicated with each other to form a clamping hole (43); the clamping shafts (45) are arranged in a plurality of numbers, the clamping shafts (45) are arranged along the circumferential direction of the second rotating disc (42) at intervals, and the second rotating disc (42) can drive the clamping shafts (45) to move along the radial direction of the second rotating disc (42) relative to the rotation of the first rotating disc (41).
2. The cable and splice test operator platform of claim 1, wherein: a thread structure (421) is arranged on the second rotating disc (42), and the thread structure (421) surrounds the outer ring of the clamping hole (43); each clamping shaft (45) is provided with a sawtooth structure (451), and the sawtooth structures (451) are connected with the thread structures (421) in a matching manner; the cable and connector test operation platform further comprises a limiting mechanism (46), and the limiting mechanism (46) can limit the moving direction of the clamping shaft (45) along the radial direction of the second rotating disc (42).
3. The cable and splice test operator platform of claim 2, wherein: the thread structure (421) is positioned on the second rotating disk (42) on the side opposite to the first rotating disk (41); the limiting mechanisms (46) are arranged in a plurality, the limiting mechanisms (46) are arranged along the circumferential direction of the first rotating disc (41) at intervals and are fixedly connected with the first rotating disc (41) respectively, and each limiting mechanism (46) is sleeved outside one clamping shaft (45) and is in sliding fit with the clamping shaft (45).
4. The cable and splice test operator platform of claim 1, wherein: a first clamping groove (411) is formed in one side, back to the second rotating disc (42), of the first rotating disc (41), and the first clamping groove (411) surrounds the outer ring of the clamping hole (43); the supporting mechanism (1) comprises a first protruding block (14) and a fixing knob (15), the first protruding block (14) is embedded in the first clamping groove (411) and is in running fit with the first clamping groove (411), and the fixing knob (15) penetrates through the first protruding block (14) and locks the first protruding block (14) in the first clamping groove (411).
5. The cable and splice test operator platform of claim 1, wherein: a second clamping groove (422) is formed in one side, facing the first rotating disc (41), of the second rotating disc (42), and the second clamping groove (422) surrounds the outer ring of the clamping hole (43); a second protruding block (412) is arranged on one side, facing the second rotating disc (42), of the first rotating disc (41), and the second protruding block (412) is embedded in the second clamping groove (422) and is in rotating fit with the second clamping groove (422).
6. The cable and splice test operator platform of claim 5, wherein: the chuck (4) further comprises a rotating knob (44) and a transmission gear, the rotating knob (44) is rotatably connected to the first rotating disc (41), the transmission gear is fixedly connected to the second rotating disc (42) and faces one side of the first rotating disc (41) and surrounds the outer ring of the clamping hole (43), and teeth on the outer ring of the rotating knob (44) are meshed with the transmission gear.
7. The cable and splice test operator platform of claim 1, wherein: the support mechanism (1) and the chucks (4) are respectively provided with two chucks, each chuck (4) is installed on one support mechanism (1), and the second rotating discs (42) of the two chucks (4) are opposite.
8. The cable and splice test operator platform of claim 7, wherein: the cable and joint test operation platform further comprises a horizontal adjusting mechanism (2), two ends of the horizontal adjusting mechanism (2) are fixedly connected with one supporting mechanism (1), and the horizontal adjusting mechanism (2) can stretch out and draw back along the horizontal direction.
9. The cable and splice test operator platform of claim 8, wherein: horizontal adjustment mechanism (2) include horizontal telescopic rod (21), horizontal adjust knob (22), horizontal drive tooth, the both ends of horizontal telescopic rod (21) respectively with two supporting mechanism (1) fixed connection, horizontal adjust knob (22) rotate to be connected on the removal section of horizontal telescopic rod (21), horizontal drive tooth fixed connection be in on the fixed section of horizontal telescopic rod (21), the tooth of horizontal adjust knob (22) outer lane with the meshing of horizontal drive tooth.
10. The cable and splice test operator platform of claim 8, wherein: the cable and connector test operating platform further comprises a sliding rail (3), and the length direction of the sliding rail (3) is along the horizontal direction; one of the supporting mechanisms (1) is fixedly connected with one end of the sliding rail (3), and the other supporting mechanism (1) is in sliding fit with the sliding rail (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111055471.9A CN113894717A (en) | 2021-09-09 | 2021-09-09 | Cable and joint test operation platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111055471.9A CN113894717A (en) | 2021-09-09 | 2021-09-09 | Cable and joint test operation platform |
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| Publication Number | Publication Date |
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| CN113894717A true CN113894717A (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111055471.9A Pending CN113894717A (en) | 2021-09-09 | 2021-09-09 | Cable and joint test operation platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104625527A (en) * | 2013-11-11 | 2015-05-20 | 青岛三利中德美水设备有限公司 | Flange welding tool |
| KR101835841B1 (en) * | 2017-10-31 | 2018-03-07 | 주식회사 광원 | Short augmentation device for electric power supply cable |
| CN207150058U (en) * | 2017-09-01 | 2018-03-27 | 国网天津市电力公司电力科学研究院 | A kind of Portable movable multi-angle cable intermediate joint clamps workbench |
| CN207372324U (en) * | 2017-09-15 | 2018-05-18 | 常州昊锐工具有限公司 | A fixed base for a three-jaw chuck |
| CN212766681U (en) * | 2020-07-21 | 2021-03-23 | 大连鑫宏利船舶工程有限公司 | Straight pipe welding rotating device for ship machining |
| CN213484391U (en) * | 2020-08-07 | 2021-06-18 | 徐振萍 | Cable connection auxiliary device for electric power construction |
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2021
- 2021-09-09 CN CN202111055471.9A patent/CN113894717A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625527A (en) * | 2013-11-11 | 2015-05-20 | 青岛三利中德美水设备有限公司 | Flange welding tool |
| CN207150058U (en) * | 2017-09-01 | 2018-03-27 | 国网天津市电力公司电力科学研究院 | A kind of Portable movable multi-angle cable intermediate joint clamps workbench |
| CN207372324U (en) * | 2017-09-15 | 2018-05-18 | 常州昊锐工具有限公司 | A fixed base for a three-jaw chuck |
| KR101835841B1 (en) * | 2017-10-31 | 2018-03-07 | 주식회사 광원 | Short augmentation device for electric power supply cable |
| CN212766681U (en) * | 2020-07-21 | 2021-03-23 | 大连鑫宏利船舶工程有限公司 | Straight pipe welding rotating device for ship machining |
| CN213484391U (en) * | 2020-08-07 | 2021-06-18 | 徐振萍 | Cable connection auxiliary device for electric power construction |
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Application publication date: 20220107 |
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