Safety operating rod for electric shock prevention signboard and using method

文档序号:793420 发布日期:2021-04-13 浏览:33次 中文

阅读说明:本技术 一种防触电标识牌安全操作杆及使用方法 (Safety operating rod for electric shock prevention signboard and using method ) 是由 杜建国 罗辉 荣龙 李胜 黄庆星 于 2020-12-11 设计创作,主要内容包括:本发明公开了一种防触电标识牌安全操作杆,包括:绝缘杆,所述绝缘杆设有上下端贯通的直孔;第一夹头,所述第一夹头下端固定连接在绝缘杆一端,第一夹头的第一侧面位于直孔的侧部,第一侧面与直孔长度方向平行;第二夹头,所述第二夹头下部通过转轴转动连接在第一夹头侧部,第二夹头位于第一侧面靠近直孔的一侧并位于直孔正上方,第二夹头的第二侧面所在的平面与第一侧面所在的平面共同相交与转轴中轴线,转轴与直孔长度方向平行,转轴与第一侧面平行;推杆,所述推杆直径小于直孔直径,推杆长度大于直孔长度,推杆活动插接在直孔内。以解决现有技术不能在操作端操作第一夹头和第二夹头开合的问题。(The invention discloses a safety operating rod of an electric shock prevention signboard, which comprises: the insulating rod is provided with a straight hole with a through upper end and a through lower end; the lower end of the first chuck is fixedly connected to one end of the insulating rod, a first side surface of the first chuck is positioned on the side part of the straight hole, and the first side surface is parallel to the length direction of the straight hole; the lower part of the second chuck is rotationally connected to the side part of the first chuck through a rotating shaft, the second chuck is positioned on one side, close to the straight hole, of the first side surface and is positioned right above the straight hole, the plane where the second side surface of the second chuck is positioned and the plane where the first side surface is positioned are intersected with the central axis of the rotating shaft together, the rotating shaft is parallel to the length direction of the straight hole, and the rotating shaft is parallel to the first side surface; the diameter of the push rod is smaller than that of the straight hole, the length of the push rod is larger than that of the straight hole, and the push rod is movably inserted into the straight hole. The problem that the first chuck and the second chuck cannot be operated to open and close at an operation end in the prior art is solved.)

1. The utility model provides a protection against electric shock signboard safety bar which characterized in that includes:

the insulation rod (1), the insulation rod (1) is provided with a straight hole (1-1) with the upper end and the lower end communicated with each other;

the lower end of the first chuck (2) is fixedly connected to one end of the insulating rod (1), a first side surface (2-1) of the first chuck (2) is located on the side of the straight hole (1-1), and the first side surface (2-1) is parallel to the length direction of the straight hole (1-1);

the lower part of the second chuck (3) is rotatably connected to the side part of the first chuck (2) through a rotating shaft (8), the second chuck (3) is positioned on one side, close to the straight hole (1-1), of the first side surface (2-1) and is positioned right above the straight hole (1-1), the plane where the second side surface (3-1) of the second chuck (3) is positioned and the plane where the first side surface (2-1) is positioned are intersected with the central axis of the rotating shaft (8) together, the length directions of the rotating shaft (8) and the straight hole (1-1) are parallel, and the rotating shaft (8) and the first side surface (2-1) are parallel;

the diameter of the push rod (4) is smaller than that of the straight hole (1-1), and the push rod (4) is movably inserted into the straight hole (1-1).

2. The safety lever for electric shock preventing signboard of claim 1 further comprises:

the upper end of the connecting plate (5) is fixedly connected to the lower surface of the first chuck (2), the connecting plate (5) is perpendicular to the first side surface (2-1), and the rotating shaft (8) is fixedly connected to the connecting plate (5);

the base (6) is fixedly connected to the lower end of the connecting plate (5) and forms an L shape with the connecting plate (5);

the connecting rod (7) is a polygonal rod body, the upper end of the connecting rod (7) is fixedly connected with the base (6), the connecting rod (7) is perpendicular to the rotating shaft (8), and the connecting rod (7) is parallel to the first side surface (2-1);

the first through hole is positioned on the base (6) on the side part of the connecting plate (5), the first through hole penetrates through the upper surface of the base and the lower end surface of the plug rod, and the first through hole (6-1) is coaxial with the plug rod (7);

the connecting hole (14) is a polygonal hole matched with the inserting rod (7), the connecting hole (14) is fixedly connected to the end of the straight hole (1-1), the connecting hole (14) is coaxial with the straight hole (1-1), and the inserting rod (7) is inserted into the connecting hole (14);

the connecting piece (13), connecting piece (13) fixed connection is in second chuck (3) lower extreme, and connecting piece (13) are located second side (3-1) one side, and L shape is constituteed with second chuck (3) in connecting piece (13), and it has hole (13-1) of changeing parallel with second side (3-1) to open on connecting piece (13), and connecting piece (13) rotate through hole (13-1) and connect in pivot (8), and connecting piece (13) are located first perforation (6-1) directly over.

3. The safety operating rod for the electric shock preventing signboard as claimed in claim 2, wherein the first through hole (6-1) is a screw hole, the outer surface of the push rod (4) is provided with threads, the threads on the push rod (4) are matched with the threads on the first through hole (6-1), and the push rod (4) is connected to the first through hole (6-1) in a threaded manner; an insulating rubber sheet (15) is fixedly connected right above the first through hole (6-1), and the insulating rubber sheet (15) seals the first through hole (6-1).

4. The safety lever for electric shock preventing signboard of claim 3 further comprises:

the polygonal prism (7) is fixedly connected to one end, far away from the first through hole (6-1), of the push rod (4), the central axis of the polygonal prism (7) is coaxial with the push rod (4), and the length of the polygonal prism (7) is larger than the distance from one end, close to the first chuck (2), of the insulating rod (1) to the rotating shaft (8);

the handle (10), polygonal jack (10-1) that is equipped with and polygon prism (7) assorted in handle (10) one end, polygon jack (10-1) degree of depth is greater than polygon prism (7) length, and polygon prism (7) activity is pegged graft in polygon jack (10-1).

5. The safety lever for electric shock proof signboard of claim 4 is characterized in that the handle (10) is rotatably connected to the end of the insulation rod (1) far away from the first perforation (6-1) through a rotary connection mechanism.

6. The safety lever for electric shock preventing signboard of claim 5 wherein the rotation connection mechanism comprises:

the limiting retainer ring (1-2), the limiting retainer ring (1-2) is fixedly connected to one end, far away from the first through hole (6-1), of the inner wall of the straight hole (1-1), and the inner diameter of the limiting retainer ring (1-2) is larger than the outer diameter of the push rod (4);

the connecting cylinder (12) is coaxial with the circumcircle of the polygonal jack (10-1), one end of the connecting cylinder (12) is fixedly connected to one end, close to the polygonal jack (10-1), of the handle (10), the inner hole of the connecting cylinder (12) is matched with the polygonal jack (10-1), the inner hole of the connecting cylinder (12) is aligned with the polygonal jack (10-1), the outer diameter of the connecting cylinder (12) is smaller than the inner diameter of the limiting retainer ring (1-2), and the length of the connecting cylinder (12) is larger than that of the limiting retainer ring (1-2);

the inner hole of the clamping ring (11) is the same as the inner hole of the connecting cylinder (12), the inner hole of the clamping ring (11) is aligned with the polygonal insertion hole (10-1), the outer diameter of the clamping ring (11) is larger than the inner diameter of the limiting retainer ring (1-2) and smaller than the inner diameter of the straight hole (1-1), the clamping ring (11) is coaxial with the connecting cylinder (12), and the inner cavity of the clamping ring (11) is coaxial with the inner cavity of the connecting cylinder (12);

wherein the snap ring (11) is rotatably connected in a straight hole (1-1) at the side part of the limiting retainer ring (1-2).

7. The safety lever for electric shock preventing signboard of claim 1 further comprises:

the first side surface (2-1) and the second side surface (3-1) are covered with rubber layers.

8. The safety lever for electric shock preventing signboard of claim 2 further comprises:

an elastic member arranged between the first chuck (2) and the second chuck (3), the elastic member causing the first chuck (2) and the second chuck (3) to have a tendency to expand.

9. The electric shock preventing signboard safety operation rod as claimed in claim 8, wherein the elastic member comprises:

the first permanent magnet (9-1), the first permanent magnet (9-1) is fixedly connected to the lower surface of the first chuck (2);

the second permanent magnet (13-2), the second permanent magnet (13-2) is fixedly connected to the upper surface of the connecting piece (13) between the rotary hole (13-1) and the second chuck (3), and the magnetic poles of the upper surface of the second permanent magnet (13-2) are the same as those of the lower surface of the first permanent magnet (9-1).

10. The use method of the electric shock prevention signboard safety operation rod as claimed in claim 6 is characterized in that the method comprises the following steps: when the first chuck (2) and the second chuck (3) need to be closed, the handle (10) is rotated to enable the push rod (4) to rotate in the first through hole (6-1) so that the end part of the push rod (4) pushes the connecting piece (13) to move towards the first chuck (2); when the first chuck (2) and the second chuck (3) need to be loosened, the handle (10) is rotated reversely to enable the push rod (4) to rotate in the first through hole (6-1) so that the end part of the push rod (4) is far away from the connecting piece (13), and the first chuck (2) and the second chuck (3) lose constraint and are loosened.

Technical Field

The invention relates to the technical field of safety signboard operating rods, in particular to an electric shock prevention signboard safety operating rod and a using method thereof.

Background

In the daily operation and maintenance work of a power supply station, some signboard is often required to be hung on a high-voltage wire or high-voltage electrical equipment, the existing operating rod is an insulating rod, and an operation and maintenance worker is often fixedly connected with a clamp at the end part of the insulating rod for the convenience of operation, and then the signboard is clamped by using a frame and then hanging operation is carried out, but the prior art has the problems that if the clamping force of the clamp is too large, the clamp is difficult to separate from the signboard, and when the insulating rod is pulled by a person with force, the signboard is easy to be pulled to be damaged; if clip clamping force degree undersize, though part from the clip with the signboard very easily, nevertheless because the clamping force degree undersize, the signboard drops from the clip very easily, pounces fortune dimension personnel to prior art exists and can not control the problem that the clip opened and shut at the operation end.

Disclosure of Invention

In order to solve the defects and shortcomings of the prior art, the invention aims to provide a safety operating rod of an electric shock prevention signboard and a using method.

The technical scheme of the invention is as follows: an electric shock prevention signboard safety operation rod comprises:

the insulating rod is provided with a straight hole with a through upper end and a through lower end;

the lower end of the first chuck is fixedly connected to one end of the insulating rod, a first side surface of the first chuck is positioned on the side part of the straight hole, and the first side surface is parallel to the length direction of the straight hole;

the lower part of the second chuck is rotationally connected to the side part of the first chuck through a rotating shaft, the second chuck is positioned on one side, close to the straight hole, of the first side surface and is positioned right above the straight hole, the plane where the second side surface of the second chuck is positioned and the plane where the first side surface is positioned are intersected with the central axis of the rotating shaft together, the rotating shaft is parallel to the length direction of the straight hole, and the rotating shaft is parallel to the first side surface;

the diameter of the push rod is smaller than that of the straight hole, and the push rod is movably inserted into the straight hole.

Further, still include:

the upper end of the connecting plate is fixedly connected to the lower surface of the first chuck, the connecting plate is perpendicular to the first side face, and the rotating shaft is fixedly connected to the connecting plate;

the base is fixedly connected to the lower end of the connecting plate and forms an L shape with the connecting plate;

the inserting rod is a polygonal rod body, the upper end of the inserting rod is fixedly connected with the base, the inserting rod is perpendicular to the rotating shaft, and the inserting rod is parallel to the first side face;

the first through hole is positioned on the base at the side part of the connecting plate, penetrates through the upper surface of the base and the lower end surface of the plug rod, and is coaxial with the plug rod;

the connecting hole is a polygonal hole matched with the inserting rod, the connecting hole is fixedly connected to the end part of the straight hole, the connecting hole is coaxial with the straight hole, and the inserting rod is inserted in the connecting hole;

the connecting piece, connecting piece fixed connection is in the second chuck lower extreme, and the connecting piece is located second side one side, and the connecting piece constitutes L shape with the second chuck, and it has the commentaries on classics hole parallel with the second side to open on the connecting piece, and the connecting piece rotates through changeing the hole and connects in the pivot, and the connecting piece is located directly over the first perforation.

Furthermore, the first through hole is a screw hole, the outer surface of the push rod is provided with threads, the threads on the push rod are matched with the threads on the first through hole, and the push rod is in threaded connection with the first through hole; and an insulating rubber sheet is fixedly connected right above the first through hole and seals the first through hole.

Further, still include:

the polygonal prism is fixedly connected to one end, far away from the first through hole, of the push rod, the central axis of the polygonal prism is coaxial with the push rod, and the length of the polygonal prism is larger than the distance from one end, close to the first chuck, of the insulating rod to the rotating shaft;

the handle, handle one end is equipped with the polygon jack with polygon prism assorted, and polygon jack degree of depth is greater than polygon prism length, and polygon prism activity is pegged graft in polygon jack.

Further, the handle is rotatably connected to one end, far away from the first through hole, of the insulating rod through a rotating connection mechanism.

Further, the rotation connection mechanism includes:

the limiting retainer ring is fixedly connected to one end, far away from the first through hole, of the inner wall of the straight hole, and the inner diameter of the limiting retainer ring is larger than the outer diameter of the push rod;

the connecting cylinder is coaxial with the circumcircle of the polygonal jack, one end of the connecting cylinder is fixedly connected to one end, close to the polygonal jack, of the handle, an inner hole of the connecting cylinder is matched with the polygonal jack, the inner hole of the connecting cylinder is aligned with the polygonal jack, the outer diameter of the connecting cylinder is smaller than the inner diameter of the limiting retainer ring, and the length of the connecting cylinder is larger than that of the limiting retainer ring;

the inner hole of the clamping ring is the same as the inner hole of the connecting cylinder, the inner hole of the clamping ring is aligned with the polygonal insertion hole, the outer diameter of the clamping ring is larger than the inner diameter of the limiting retainer ring and smaller than the inner diameter of the straight hole, the clamping ring is coaxial with the connecting cylinder, and the inner cavity of the clamping ring is connected with the inner cavity of the connecting cylinder;

wherein, the snap ring is rotatably connected in a straight hole at the side part of the limit retainer ring.

Further, still include:

the first side and the second side are coated with a rubber layer.

Further, still include:

and the elastic piece is arranged between the first chuck and the second chuck, and the elastic piece enables the first chuck and the second chuck to have the tendency of expanding.

Further, the elastic member includes:

the first permanent magnet is fixedly connected to the lower surface of the first chuck;

and the second permanent magnet is fixedly connected to the upper surface of the connecting piece between the rotating hole and the second chuck, and the magnetic poles of the upper surface of the second permanent magnet are the same as those of the lower surface of the first permanent magnet.

A use method of the safety operating rod of the electric shock prevention signboard comprises the following steps: when the first chuck and the second chuck need to be closed, the handle is rotated to enable the push rod to rotate in the first through hole, so that the end part of the push rod pushes the connecting piece to move towards the direction of the first chuck; when the first chuck and the second chuck need to be loosened, the handle is rotated reversely to enable the push rod to rotate in the first through hole so that the end part of the push rod is far away from the connecting piece, and the first chuck and the second chuck lose restraint and are loosened.

The invention has the beneficial effects that: compared with the prior art, the method has the advantages that,

1) the push rod is moved towards the direction of the second chuck at the operation end, so that the end part of the push rod pushes the second chuck to approach the first chuck around the rotating shaft, the signboard arranged between the first side surface and the second side surface is clamped, and when the signboard is required to be loosened, the push rod is only required to be moved towards the direction away from the second chuck at the operation end, so that the second chuck is not restrained and loosened from the first chuck, and the signboard is released;

2) the connecting piece is connected with the rotating shaft, and the connecting piece and the second chuck form an L shape, so that the first chuck and the second chuck cannot generate mutual interference when the first side surface and the second side surface are parallel to each other, and when the first chuck and the second side chuck clamp the signboard, the contact area between the first side surface and the signboard and the contact area between the second side surface and the signboard are larger, and the clamping is firmer;

3) according to the invention, the push rod is in threaded connection with the first through hole, and the distance between the end part of the push rod and the connecting piece can be adjusted by rotating the push rod, so that the push rod has a self-locking function during the movement of the first through hole, and other objects are not needed to fix the push rod after the position of the push rod is adjusted, so that the use is more convenient; the upper end of the straight hole is blocked by the insulating rubber sheet, so that rainwater is prevented from entering the straight hole to damp the inner wall of the straight hole and conduct electricity;

4) according to the invention, the push rod can be rotated by rotating the handle through the matching of the polygonal jack in the handle and the polygonal prism, the diameter of the handle is larger than that of the push rod, the moment of the handle rotating the push rod is larger than that of the push rod directly rotating the push rod, the push rod is rotated by the handle more labor-saving, the handle can also play a role in isolating the straight hole from an operator, the problem that current is conducted to a human body through the straight hole due to moisture in the straight hole is avoided, and the handle is safer;

5) according to the invention, the handle and the insulating rod are connected through the rotary connecting mechanism, so that the handle can be prevented from being separated while rotating;

6) the clamping ring is clamped by the limiting check ring, and the connecting cylinder is connected with the clamping ring, so that the handle is rotatably connected to the end part of the insulating rod;

7) according to the invention, the rubber layers coated on the first side surface and the second side surface increase the friction force between the first chuck and the signboard as well as between the second chuck and the signboard, so that the signboard is prevented from sliding off, and the effect of further increasing the insulation effect can be achieved;

8) according to the invention, the elastic piece has the tendency of opening without the action of external force, so that when the pushing force of the push rod on the connecting piece is removed, the first chuck and the second chuck can automatically open, and the first chuck and the second chuck are more easily removed from the signboard;

9) according to the invention, the first chuck and the second chuck have a tendency of opening through the repulsive force between the first permanent magnet and the second permanent magnet;

10) the invention realizes that the push rod is operated to be far away from and close to the connecting piece at the operation end by using the mode of rotating the handle, realizes the opening and closing of the first chuck and the second chuck, and has the advantage of controlling the opening and closing of the first chuck and the second chuck at the operation end.

Drawings

FIG. 1 is a perspective view showing the structure of example 1 of the present invention;

FIG. 2 is an exploded view of example 1 of the present invention;

FIG. 3 is a partial view at C of FIG. 2;

FIG. 4 is a partial view at E of FIG. 2;

FIG. 5 is a partial view at F of FIG. 2;

FIG. 6 is a perspective view of the second chuck in accordance with embodiment 1 of the present invention;

FIG. 7 is a right side view of a first chuck in accordance with embodiment 1 of the present invention;

FIG. 8 is a cross-sectional view taken along line D-D of FIG. 7;

FIG. 9 is a front view of embodiment 1 of the present invention;

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 9;

FIG. 11 is a partial view taken at H in FIG. 10;

fig. 12 is a partial view at G in fig. 10.

Detailed Description

The invention will be further described with reference to the following drawings and specific embodiments:

example 1: referring to fig. 1 to 12, an electric shock preventing signboard safety operation lever includes: the insulation rod 1 is provided with a straight hole 1-1 with a through upper end and a through lower end; the lower end of the first chuck 2 is connected to one end of the insulating rod 1 through insertion or welding, a first side surface 2-1 of the first chuck 2 is positioned on the side part of the straight hole 1-1, and the first side surface 2-1 is parallel to the length direction of the straight hole 1-1; the lower part of the second chuck 3 is rotationally connected to the side part of the first chuck 2 through a rotating shaft 8, the second chuck 3 is positioned on one side of the first side surface 2-1 close to the straight hole 1-1 and is positioned right above the straight hole 1-1, the plane where the second side surface 3-1 of the second chuck 3 is positioned and the plane where the first side surface 2-1 is positioned share the same phase and are intersected with the central axis of the rotating shaft 8, the rotating shaft 8 is parallel to the length direction of the straight hole 1-1, and the rotating shaft 8 is parallel to the first side surface 2-1; the diameter of the push rod 4 is smaller than that of the straight hole 1-1, and the push rod 4 is movably inserted in the straight hole 1-1.

Further, still include: the upper end of the connecting plate 5 is fixedly connected to the lower surface of the first chuck 2, the connecting plate 5 is perpendicular to the first side surface 2-1, and the rotating shaft 8 is fixedly connected to the connecting plate 5; the base 6 is fixedly connected to the lower end of the connecting plate 5 and forms an L shape with the connecting plate 5; the inserting rod 7 is a polygonal rod body, the upper end of the inserting rod 7 is fixedly connected with the base 6, the inserting rod 7 is perpendicular to the rotating shaft 8, and the inserting rod 7 is parallel to the first side face 2-1; the first through hole is positioned on the base 6 at the side part of the connecting plate 5, the first through hole penetrates through the upper surface of the base and the lower end surface of the plug rod, and the first through hole 6-1 is coaxial with the plug rod 7; the connecting hole 14 is a polygonal hole matched with the inserting rod 7, the connecting hole 14 is fixedly connected to the end part of the straight hole 1-1, the connecting hole 14 is coaxial with the straight hole 1-1, and the inserting rod 7 is inserted into the connecting hole 14; the connecting piece 13 is fixedly connected to the lower end of the second chuck 3, the connecting piece 13 is positioned on one side of the second side surface 3-1, the connecting piece 13 and the second chuck 3 form an L shape, a rotating hole 13-1 parallel to the second side surface 3-1 is formed in the connecting piece 13, the connecting piece 13 is rotatably connected to the rotating shaft 8 through the rotating hole 13-1, and the connecting piece 13 is positioned right above the first through hole 6-1.

Furthermore, the first through hole 6-1 is a screw hole, threads are arranged on the outer surface of the push rod 4, the threads on the push rod 4 are matched with the threads on the first through hole 6-1, and the push rod 4 is connected to the first through hole 6-1 in a threaded manner; an insulating rubber sheet 15 is fixedly connected right above the first through hole 6-1, and the insulating rubber sheet 15 seals the first through hole 6-1.

Further, still include: the polygonal prism 7 is connected to one end, far away from the first through hole 6-1, of the push rod 4 in a welded mode, the central axis of the polygonal prism 7 is coaxial with the push rod 4, and the length of the polygonal prism 7 is larger than the distance from one end, close to the first chuck 2, of the insulating rod 1 to the rotating shaft 8; the handle 10, one end of the handle 10 is provided with a polygonal jack 10-1 matched with the polygonal prism 7, the depth of the polygonal jack 10-1 is larger than the length of the polygonal prism 7, and the polygonal prism 7 is movably inserted in the polygonal jack 10-1.

Further, the handle 10 is rotatably connected to an end of the insulating rod 1 far from the first through hole 6-1 through a rotating connection mechanism.

Further, the rotation connection mechanism includes: the limiting retainer ring 1-2 is welded and connected to one end, far away from the first through hole 6-1, of the inner wall of the straight hole 1-1, and the inner diameter of the limiting retainer ring 1-2 is larger than the outer diameter of the push rod 4; the connecting cylinder 12 is coaxial with the circumcircle of the polygonal jack 10-1, one end of the connecting cylinder 12 is welded and connected to one end, close to the polygonal jack 10-1, of the handle 10, the inner hole of the connecting cylinder 12 is matched with the polygonal jack 10-1, the inner hole of the connecting cylinder 12 is aligned with the polygonal jack 10-1, the outer diameter of the connecting cylinder 12 is smaller than the inner diameter of the limiting retainer ring 1-2, and the length of the connecting cylinder 12 is larger than that of the limiting retainer ring 1-2; the inner hole of the clamping ring 11 is the same as the inner hole of the connecting cylinder 12, the inner hole of the clamping ring 11 is aligned with the polygonal insertion hole 10-1, the outer diameter of the clamping ring 11 is larger than the inner diameter of the limiting retainer ring 1-2 and smaller than the inner diameter of the straight hole 1-1, the clamping ring 11 is coaxial with the connecting cylinder 12, and the inner cavity of the clamping ring 11 is equal to the inner cavity of the connecting cylinder 12; wherein, the snap ring 11 is rotatably connected in a straight hole 1-1 at the side part of the limit retainer ring 1-2.

Further, still include: the first side surface 2-1 and the second side surface 3-1 are covered with rubber layers.

Further, still include: and the elastic piece is arranged between the first chuck 2 and the second chuck 3, and the elastic piece enables the first chuck 2 and the second chuck 3 to have the tendency of expanding.

Further, the elastic member includes: the first permanent magnet 9-1 is bonded or clamped on the lower surface of the first chuck 2, and the first permanent magnet 9-1 is bonded or clamped on the lower surface of the first chuck 2; and the second permanent magnet 13-2 is bonded or clamped on the upper surface of the connecting piece 13 between the rotary hole 13-1 and the second chuck 3, and the magnetic pole of the upper surface of the second permanent magnet 13-2 is the same as that of the lower surface of the first permanent magnet 9-1.

A use method of the safety operating rod of the electric shock prevention signboard comprises the following steps: when the first chuck 2 and the second chuck 3 need to be closed, the handle 10 is rotated to rotate the push rod 4 in the first through hole 6-1, so that the end part of the push rod 4 pushes the connecting piece 13 to move towards the first chuck 2; when it is desired to loosen the first and second jaws 2 and 3, the handle 10 is rotated in the opposite direction to rotate the push rod 4 in the first through hole 6-1 to move the end of the push rod 4 away from the connecting member 13, and the first and second jaws 2 and 3 are released.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

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