CN114421358A - Wire clamp dismounting device for distribution line insulator - Google Patents
Wire clamp dismounting device for distribution line insulator Download PDFInfo
- Publication number
- CN114421358A CN114421358A CN202210089356.1A CN202210089356A CN114421358A CN 114421358 A CN114421358 A CN 114421358A CN 202210089356 A CN202210089356 A CN 202210089356A CN 114421358 A CN114421358 A CN 114421358A
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- wire clamp
- insulator
- plate
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- distribution line
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- 239000012212 insulator Substances 0.000 title claims abstract description 61
- 238000009826 distribution Methods 0.000 title claims abstract description 17
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000012634 fragment Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 241001503987 Clematis vitalba Species 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
Abstract
The invention discloses a wire clamp dismounting device for a distribution line insulator, which comprises a supporting mechanism, a wire clamp clamping mechanism and an automatic dismounting mechanism, wherein the wire clamp clamping mechanism and the automatic dismounting mechanism are both connected to the supporting mechanism; the automatic dismounting device is used for dismounting the clamped wire clamp. The invention solves the problems that the existing insulating bucket arm vehicle can not enter the operation position, and the maintenance efficiency is influenced because the operation personnel need to operate at the top end of the telegraph pole.
Description
Technical Field
The invention belongs to the technical field of electric power appliances, and particularly relates to a wire clamp dismounting device for a distribution line insulator.
Background
The insulator comprises a pin insulator and a line column insulator, and is an insulator for supporting a wire, the lower end of the insulator is fixed on a cross arm on a wire rod through a stud and a nut, a wire holder at the upper end of the insulator is connected with a wire clamp through a screw, an arc-shaped groove is formed in the wire holder, the wire is fixed in an arc-shaped channel through the downward pressing of the wire clamp, the support and the fixation of the wire are realized through the insulator, sufficient insulation among the wire, the cross arm and a wire pole is ensured, the current is prevented from flowing back to the ground, and the insulator is widely applied to an overhead power transmission system.
The wire clamp that has now is dismantled and the installation often need adopt insulating bucket arm car or operation personnel to climb the wire pole top through direct climbers and carry out the operation. However, both of these two methods have disadvantages, such as the situation that many poles are located on hillsides, pits, or street and farmland areas, and the insulating boom car cannot enter the operation position, so that the column insulator replacement operation cannot be performed in a live-line manner, and the maintenance efficiency is affected.
When the operating personnel climbs the top end of the telegraph pole through the direct climbers to operate, the labor intensity is high, and due to the fact that no good fixing measures exist, the operation of the operating personnel is very limited, and therefore the maintenance efficiency is low.
Disclosure of Invention
The invention aims to provide a wire clamp dismounting device for a distribution line insulator, which is characterized in that a motor drives a sleeve to dismount a wire clamp fixing screw, a spring plate buckle is used for clamping and fixing a wire clamp, and an insulating grab arm vehicle is integrally lifted by an order gram rod, so that the problems that the existing insulating grab arm vehicle cannot enter an operation position, and an operator needs to operate at the top end of a telegraph pole to influence the maintenance efficiency are solved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a wire clamp dismounting device for a distribution line insulator, which comprises a supporting mechanism, a wire clamp clamping mechanism and an automatic dismounting mechanism, wherein the wire clamp clamping mechanism and the automatic dismounting mechanism are both connected to the supporting mechanism,
the wire clamp clamping mechanism is used for clamping and fixing a wire clamp;
the automatic dismounting device is used for dismounting the clamped wire clamp.
Further, the supporting mechanism comprises a side plate and a brake pull rod, wherein,
the insulating layer is fixedly connected with the insulating layer.
Further, the wire clamp clamping mechanism comprises a flat plate and three spring plate buckles, wherein,
the flat plate is fixedly connected to the other side of the side plate, one of the elastic sheet buckles is fixedly connected to the upper surface of the flat plate, and the other two elastic sheet buckles are fixedly connected to the lower surface of the flat plate.
Further, the automatic dismounting device comprises a mounting plate, an electric telescopic rod and two motors, wherein,
the mounting plate is connected to the other side of the side plate in a sliding mode, the mounting plate is located above the flat plate, the flat plate is connected with an electric telescopic rod, and the output end of the electric telescopic rod is connected to the mounting plate;
the two motors are fixedly connected to the upper surface of the mounting plate; the output shafts of the two motors are vertically arranged downwards and penetrate through the mounting plate, each output shaft of the motor is fixedly connected with a sleeve, and the sleeves are used for rotating and disassembling fixing screws on the wire clamp.
Furthermore, the dismounting device also comprises an insulator fixing mechanism, the insulator fixing mechanism comprises a fixing plate, an electric push rod and two clamping jaws, wherein,
the fixed plate is fixedly connected to the other side of the side plate; the two clamping jaws are rotatably connected to the upper surface of the fixing plate;
the electric push rod is fixedly connected to the fixing plate, and a triangular block is fixedly connected to the telescopic end of the electric push rod; the triangular block is positioned between the two clamping jaws; the two clamping jaws are extruded by the triangular block, so that the clamping jaws rotate.
Furthermore, the flat plate is provided with a positioning notch, and the inner side wall of the positioning notch abuts against the side face of the wire clamp.
Furthermore, the output shafts of the two motors are respectively sleeved with a synchronous belt wheel, the two synchronous belt wheels are connected through a synchronous belt, a connecting block is arranged between the output shafts of the two motors, and the output shaft of each motor is rotatably connected with the connecting block.
Further, dull and stereotyped lower surface is two L shape baffles of fixedly connected with side by side, two L shape baffle is used for leaning on with the upper end of insulator.
Furthermore, one of the L-shaped baffle is provided with an arc-shaped notch which is used for being attached to the outer wall of the upper end of the insulator, the other L-shaped baffle is provided with a stop dog which is fixedly connected to the lower surface of the L-shaped baffle and is attached to the outer wall of the upper end of the insulator, and the lower surface of the L-shaped baffle is abutted to the end face of the upper end of the insulator.
Furthermore, the spring plate buckle is bent through the spring plate to form a rectangular structure; the elastic sheet buckle is provided with an avoiding notch in clearance fit with the fixing screw on the wire clamp.
The invention has the following beneficial effects:
according to the invention, the motor drives the sleeve to disassemble and assemble the cable clamp fixing screw, the cable clamp is clamped and fixed through the elastic sheet buckle, and the integral lifting of the disassembling and assembling device is realized through the insulating bucket arm vehicle, so that the disassembling and assembling of the cable clamp are realized, the situation that an insulating bucket arm vehicle cannot enter an operation position to cause the incapability of carrying out electrified column type insulator replacement operation and an operator needs to climb to the top end of a telegraph pole through a foot fastener to carry out operation is avoided, the operator can complete the disassembling and replacing of the cable clamp on the ground, the convenience and flexibility of cable clamp replacement are effectively improved, and the replacement efficiency is greatly improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a wire clamp mounting and dismounting device for a distribution line insulator according to the present invention;
FIG. 2 is a schematic bottom view of the structure of FIG. 1;
FIG. 3 is a schematic view of the structure of the wire clamp attaching and detaching device, the insulator and the wire in the present application;
FIG. 4 is a schematic view of the rear view of FIG. 3;
FIG. 5 is a side view of FIG. 3;
FIG. 6 is a schematic structural view of the spring clip;
FIG. 7 is a schematic structural view of a wire clamp mounting and dismounting device, an insulator and a wire according to a second embodiment;
in the drawings, the components represented by the respective reference numerals are listed below:
1-side plate, 2-elastic sheet buckle, 3-motor, 4-clamping jaw, 5-L-shaped baffle, 6-insulator, 601-wire clamp, 7-lead, 101-insulation rod, 102-flat plate, 103-mounting plate, 104-electric telescopic rod, 105-fixing plate, 106-positioning notch, 201-avoidance notch, 301-sleeve, 302-synchronous pulley, 303-connecting block, 401-electric push rod, 402-triangular block, 501-arc notch and 502-stop block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Example one
Referring to fig. 1 and 2, the invention relates to a wire clamp dismounting device for a distribution line insulator, which comprises a supporting mechanism, a wire clamp clamping mechanism and an automatic dismounting mechanism, wherein the wire clamp clamping mechanism and the automatic dismounting mechanism are both connected to the supporting mechanism, the wire clamp clamping mechanism is used for clamping and fixing a wire clamp, and the automatic dismounting device is used for dismounting a clamped wire clamp 601.
The supporting mechanism comprises a side plate 1 and a link rod 101, the link rod 101 is fixedly connected to one side of the side plate 1, and the side plate 1 is vertically arranged.
The wire clamp clamping mechanism comprises a flat plate 102 and three elastic sheet buckles 2, wherein the flat plate 102 is fixedly connected to the other side of the side plate 1, one elastic sheet buckle 2 is fixedly connected to the upper surface of the flat plate 102 (through screw fixing), and the other two elastic sheet buckles 2 are fixedly connected to the lower surface of the flat plate 102 (through screw fixing). Two shell fragment buckles 2 below dull and stereotyped 102 are symmetrical setting relatively above shell fragment buckle 2, can carry out the centre gripping fixedly to fastener 601 through shell fragment buckle 2.
Automatic dismouting device includes mounting panel 103, electric telescopic handle 104 and two motors 3, wherein, mounting panel 103 sliding connection is at the opposite side of curb plate 1, and mounting panel 103 is located dull and stereotyped 102 top, be connected with electric telescopic handle 104 on dull and stereotyped 102, electric telescopic handle 104's output is connected on mounting panel 103, and flexible end through electric telescopic handle 104 can drive mounting panel 103 and reciprocate.
The two motors 3 are fixedly connected to the upper surface of the mounting plate 103; two the output shaft of motor 3 sets up and passes mounting panel 103 vertically downwards, every the equal fixedly connected with sleeve 301 of output shaft of motor 3, sleeve 301 is used for rotating the dismouting to the set screw on fastener 601.
Further, in this embodiment, the flat plate 102 may be fixedly connected to a guide rod (not shown in the figure), the mounting plate 103 is connected to a guide sleeve matched with the guide rod, and the guide rod is sleeved with a spring, so that the mounting plate 103 is buffered by the spring when moving up and down, and the connection gap is eliminated by the spring, thereby improving the accuracy of the position movement of the mounting plate 103.
As shown in fig. 3 to 5 and 7, the insulator 6 is mounted on a cross arm of a utility pole, and the insulator 6 fixes the conductor 7 to the upper end of the insulator 6 by a clip 601. When the fastener 601 needs to be dismantled, the dismounting device is lifted up through the insulation rod 101, then the insulation rod 101 is transversely moved, so that the two elastic sheet buckles 2 on the lower surface of the flat plate 102 move into the gap between the insulator 6 and the fastener 601, and the elastic sheet buckles 2 on the upper surface of the flat plate 102 are clamped on the upper surface of the fastener 601, therefore, the fastener 601 can be clamped and fixed through the three elastic sheet buckles 2, and the sleeve 301 corresponds to the position of the fastener 601.
Further, in this embodiment, a positioning notch 106 is formed in the flat plate 102, an inner side wall of the positioning notch 106 abuts against a side surface of the wire clamp, so that position positioning (positioning of the sleeve 301) is achieved, and a right-angled portion of the inner side wall of the positioning notch 106 is attached to a corner portion of the wire clamp 601, so that the sleeve 301 and a position of a fixing screw on the wire clamp 601 are quickly positioned.
As shown in fig. 6, the spring plate buckle 2 is bent by the spring plate to form a rectangular structure; the elastic sheet buckle 2 is provided with an avoidance notch 201 in clearance fit with the wire clamp fixing screw, so that the positions of the two elastic sheet buckles 2 below the flat plate 102 correspond to the positions of the fixing screws of the wire clamp 601, and the fixing screws can be clamped into the corresponding avoidance notches 201 to realize position correspondence. In this embodiment, the two elastic sheet fasteners 2 on the lower surface of the flat plate 102 are fastened to the lower surfaces of the two ends of the wire clamp 601, and the elastic sheet fasteners 2 on the upper surface of the flat plate 102 are fastened to the upper surface of the wire clamp 601, so that the wire clamp 601 is clamped and fixed.
Further, in this embodiment, the output shafts of the two motors 3 are all sleeved with the synchronous pulley 302, and the two synchronous pulleys 302 are connected through the synchronous belt, and the output shafts of the two motors 3 are connected through the synchronous belt, so that the two sleeves 301 can be better ensured to rotate synchronously, and the synchronism of screwing the two fixed screws is ensured. And, be equipped with connecting block 303 between two the output shaft of motor 3, every the output shaft of motor 3 all is connected with rotatable ground between connecting block 303 (set up two perforation on the connecting block 303, all be equipped with the bearing in two perforations, two bearings are worn to establish respectively by the output shaft of two motors 3) for the rotational stability of the output shaft of two motors 3 obtains improving.
When installing fastener 601, it is fixed with fastener 601 through 2 centre clampings of shell fragment buckle to insert set screw, lift up the dismouting device at order gram stick 101 to correspond the screw hole position on set screw and 6 tops of insulator, rethread sleeve 301 drives set screw and rotates, twists the threaded hole with set screw in, then realize the installation to fastener 601.
Example two
On the basis of the first embodiment, the dismounting device further comprises an insulator fixing mechanism, the insulator fixing mechanism comprises a fixing plate 105, an electric push rod 401 and two clamping jaws 4, as shown in fig. 4 and 7, the fixing plate 105 is fixedly connected to the other side of the side plate 1, the fixing plate 105 is horizontally arranged, and the fixing plate 105 is located below the flat plate 102; both clamping jaws 4 are rotatably connected to the upper surface of the fixed plate 105.
Two clamping jaw 4 cooperation electric putter 401, press from both sides tight insulator outer wall through two clamping jaw 4 of electric putter 401 drive, it is concrete, electric putter 401 fixed connection is on fixed plate 105, electric putter 401's flexible fixed connection has three hornblocks 402, three hornblocks 402 are isosceles triangle, three hornblocks 402 are located between two clamping jaw 4, drive the tip that three hornblocks 402 rise and extrude two clamping jaw 4 through electric putter 401, make clamping jaw 4 produce and rotate, utilize two other ends that press from both sides tight jaw 4 to be close to each other, thereby the centre gripping is at insulator 6 outer wall, it is fixed to realize the centre gripping to insulator 6, thereby make whole dismouting device obtain further rigidity, thereby improve the stability when dismantling and installing fastener 601.
Meanwhile, the inner side surface of the clamping end of each clamping jaw 4 can be uniformly provided with anti-skidding grooves or arc-shaped notches, so that the fixing effect of the clamping jaws 4 and the insulator 6 after clamping is improved.
A torsion spring (not shown in the figure) can be installed between the fixing plate 105 and the clamping jaws 4, or the clamping ends of the two clamping jaws 4 are kept away by connecting springs between the two clamping jaws 4, so that the clamping jaws 4 can be opened automatically after the electric push rod 401 drives the triangular block 402 to descend, and the insulator 6 loses the clamping and is convenient for adjusting the position of the dismounting device.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, as shown in fig. 2 and 5, two L-shaped baffles 5 are welded or screwed on the lower surface of the flat plate 102 side by side; two L-shaped baffles 5 are respectively positioned at two sides of the upper end of the insulator 6 and are used for abutting against the upper end of the insulator to realize position location.
Specifically, an arc-shaped notch 501 attached to the outer wall of the insulator 6 is formed in one of the L-shaped baffles 5, and the arc-shaped notch 501 is attached to the outer wall of the insulator 6, so that the positioning accuracy of the position of the whole dismounting device is further improved.
And, the lower surface of another L-shaped baffle 5 offsets with the upper end terminal surface of insulator 6, realizes the accurate location of cutting to the dismouting device vertical position, and L-shaped baffle 5 lower surface welding has the dog 502 with the laminating of insulator upper end outer wall, further fixes a position dismouting device horizontal position through dog 502 to realize the accurate positioning to dismouting device horizontal position through dog 502 and arc notch 501, improve convenience and the accuracy nature of fastener 601 dismouting in-process position location.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A wire clamp dismounting device for a distribution line insulator is characterized by comprising a supporting mechanism, a wire clamp clamping mechanism and an automatic dismounting mechanism, wherein the wire clamp clamping mechanism and the automatic dismounting mechanism are both connected to the supporting mechanism,
the wire clamp clamping mechanism is used for clamping and fixing a wire clamp;
the automatic dismounting device is used for dismounting the clamped wire clamp.
2. The device for removing and installing a wire clamp for an insulator of a distribution line of claim 1, wherein the supporting mechanism comprises a side plate (1) and a brake lining rod (101), wherein,
the insulating pull rod (101) is fixedly connected to one side of the side plate (1).
3. The device of claim 2, wherein the clamp holding mechanism comprises a plate (102) and three spring clips (2), wherein,
the flat plate (102) is fixedly connected to the other side of the side plate (1), one of the elastic sheet buckles (2) is fixedly connected to the upper surface of the flat plate (102), and the other two elastic sheet buckles (2) are fixedly connected to the lower surface of the flat plate (102).
4. The clamp dismounting device for distribution line insulator according to claim 3, wherein the automatic dismounting device comprises a mounting plate (103), an electric telescopic rod (104) and two motors (3), wherein,
the mounting plate (103) is connected to the other side of the side plate (1) in a sliding mode, the mounting plate (103) is located above the flat plate (102), the flat plate (102) is connected with an electric telescopic rod (104), and the output end of the electric telescopic rod (104) is connected to the mounting plate (103);
the two motors (3) are fixedly connected to the upper surface of the mounting plate (103); two the output shaft of motor (3) sets up and passes mounting panel (103) vertically downwards, every the equal fixedly connected with sleeve (301) of output shaft of motor (3), sleeve (301) are used for rotating the dismouting to the set screw on the fastener.
5. A device for dismounting and mounting a clamp for an insulator of a distribution line according to any one of claims 1-4, characterized in that the dismounting and mounting device further comprises an insulator fixing mechanism, the insulator fixing mechanism comprises a fixing plate (105), an electric push rod (401) and two clamping jaws (4), wherein,
the fixing plate (105) is fixedly connected to the other side of the side plate (1); the two clamping jaws (4) are rotatably connected to the upper surface of the fixing plate (105);
the electric push rod (401) is fixedly connected to the fixing plate (105), and a triangular block (402) is fixedly connected to the telescopic end of the electric push rod (401); the triangular block (402) is positioned between the two clamping jaws (4); the two clamping jaws (4) are pressed by the triangular block (402) so that the clamping jaws (4) rotate.
6. The device for removing and installing the wire clamp for the distribution line insulator is characterized in that the flat plate (102) is provided with a positioning notch (106), and the inner side wall of the positioning notch (106) is abutted against the side surface of the wire clamp.
7. The wire clamp dismounting device for the distribution line insulator is characterized in that the output shafts of the two motors (3) are sleeved with synchronous pulleys (302), the two synchronous pulleys (302) are connected through a synchronous belt, a connecting block (303) is arranged between the output shafts of the two motors (3), and the output shaft of each motor (3) is rotatably connected with the connecting block (303).
8. The clamp dismounting device for the distribution line insulator is characterized in that two L-shaped baffle plates (5) are fixedly connected to the lower surface of the flat plate (102) side by side, and the two L-shaped baffle plates (5) are used for abutting against the upper end of the insulator.
9. The wire clamp dismounting device for the distribution line insulator is characterized in that one of the L-shaped baffles (5) is provided with an arc-shaped notch (501) for being attached to the outer wall of the upper end of the insulator, the other L-shaped baffle (5) is abutted to the end face of the upper end of the insulator, and the other L-shaped baffle (5) is fixedly connected with a stop block (502) attached to the outer wall of the upper end of the insulator.
10. The wire clamp dismounting device for the distribution line insulator is characterized in that the spring piece buckle (2) is bent through a spring piece to form a rectangular structure; an avoiding notch (201) in clearance fit with a fixing screw on the wire clamp is formed in the elastic sheet buckle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210089356.1A CN114421358A (en) | 2022-01-25 | 2022-01-25 | Wire clamp dismounting device for distribution line insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210089356.1A CN114421358A (en) | 2022-01-25 | 2022-01-25 | Wire clamp dismounting device for distribution line insulator |
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| Publication Number | Publication Date |
|---|---|
| CN114421358A true CN114421358A (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210089356.1A Pending CN114421358A (en) | 2022-01-25 | 2022-01-25 | Wire clamp dismounting device for distribution line insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114421358A (en) |
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| CN113580058A (en) * | 2021-07-20 | 2021-11-02 | 合肥工业大学 | A quick replacement device for preventing wind fastener |
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- 2022-01-25 CN CN202210089356.1A patent/CN114421358A/en active Pending
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| CN202134849U (en) * | 2011-07-08 | 2012-02-01 | 山东电力集团公司超高压公司 | Self-propelled tension-resistant live-line entire insulator string replacement work tool |
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| CN113580058A (en) * | 2021-07-20 | 2021-11-02 | 合肥工业大学 | A quick replacement device for preventing wind fastener |
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