CN113839236B

CN113839236B - Double-hook type grounding wire anti-falling hook device with top end opening

Info

Publication number: CN113839236B
Application number: CN202111168986.XA
Authority: CN
Inventors: 王健; 田小壮; 王正武; 付国萍; 郭鹏; 马辉欣; 郭士宁; 吴珂; 牛铭山; 彭敏; 王艳春; 刘家辛; 赵普志; 杨柱石; 郑义
Original assignee: Super High Voltage Branch Of State Grid Xinjiang Electric Power Co ltd; State Grid Corp of China SGCC
Current assignee: Super High Voltage Branch Of State Grid Xinjiang Electric Power Co ltd; State Grid Corp of China SGCC
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2023-05-09
Anticipated expiration: 2041-10-08
Also published as: CN113839236A

Abstract

The invention discloses a double-hook type grounding wire anti-falling hook device with an opening at the top end, which has a reasonable, strict and reliable structure; the ground wire hook can be effectively prevented from falling off, and the problem that the ground wire falls off is directly solved from the root through the double-hook structure. The invention comprises a main ground wire hook, wherein the main ground wire hook comprises a left hook top end, a right hook top end, a left hook side edge, a right hook side edge, an arc-shaped pressing sheet, a torsion spring, a connecting rod and an operating mechanism component; the main hook of the grounding wire is a hook which is opened or closed under the control of a connecting rod; the connecting rod comprises a left connecting rod and a right connecting rod; after the hook is closed, the lead is clamped at the upper part of the hook under the action of the arc-shaped pressing piece; the hook also comprises a trigger element for opening and closing the hook, and the trigger element is a contact cambered surface; the left side and the right side below the contact cambered surface are respectively connected with the connecting rods, and the left connecting rod and the right connecting rod are respectively connected with hooks corresponding to the two sides.

Description

Double-hook type grounding wire anti-falling hook device with top end opening

Technical Field

The invention relates to an anti-falling device for a grounding wire, which is particularly used for hanging the grounding wire to the ground.

Background

After the power failure of the transformer substation or the power transmission and distribution line, the grounding wire should be installed on each possible incoming call side before the maintenance work of the electrical equipment begins, and effective countermeasures are taken to prevent the grounding wire from falling off, so that the hanging of the grounding wire is one of the technical measures which must be taken. If the installation and suspension of the grounding wire are not standard, the suspension structure of the grounding wire is not reasonable or falls off in the working process, the maintainer working on the power-off equipment or the power-off line is likely to be damaged by the sudden incoming call of the power-off maintenance equipment or the line, or is directly exposed to the induction electricity of higher voltage generated by the electrified equipment. If the high-voltage equipment suddenly calls and the grounding wire is not protected, the lives of maintenance personnel can be injured, meanwhile, the voltage induced on the power failure equipment, particularly when a single line of the double-circuit line of the same tower is in power failure, the non-power failure line can induce high voltage of several kilovolts to hundreds of kilovolts on the power failure line, and the non-grounding wire protection can bring irrecoverable injury to the maintenance personnel.

According to investigation, the ground wire hooks used in the national power grid company systems are hooks of the same standard and model, and can be firmly hung on a power failure wire to a certain extent, but under unexpected conditions, external acting force can change the hanging posture of the ground wire hooks and even directly bump the ground wire hooks from the power failure wire, related casualties occur in the system, other cases similar to the ground wire falling-off induction electric shock are more, and the ground wire falling-off cannot be completely and effectively prevented by all the hooks. Measures adopted in the power system for preventing the ground wire from falling off are generally to safely meet the ground before work and to strengthen monitoring on the suspension state of the ground wire in work, or to strengthen and supplement the effect by using a method of winding a ground wire, so that the ground wire falls off in the field due to the existence of leakage or other unexpected conditions, and the problem of falling off of the ground wire is not solved at all.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the double-hook type grounding wire anti-falling hook device with an opening at the top end, which has a reasonable, strict and reliable structure; the ground wire hook can be effectively prevented from falling off, and the problem that the ground wire falls off is directly solved from the root through the double-hook structure.

In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:

the double-hook type grounding wire anti-falling hook device with the open top comprises a grounding wire main hook, wherein the grounding wire main hook comprises a left hook top end (3), a right hook top end (24), a left hook side edge (14), a right hook side edge (29), an arc-shaped pressing sheet, a torsion spring, a connecting rod and an operating mechanism component (17); the main hook of the grounding wire is a hook which is opened or closed under the control of a connecting rod; the connecting rod comprises a left connecting rod (11) and a right connecting rod (31); after the hook is closed, the lead (66) is clamped on the upper part of the hook under the action of the arc-shaped pressing piece;

the hook also comprises a trigger element for opening and closing the hook, and the trigger element is a contact cambered surface (13); the left side and the right side below the contact cambered surface are respectively connected with the connecting rods, and the left connecting rod and the right connecting rod are respectively connected with hooks corresponding to the two sides;

The lower part of the contact cambered surface (13) is simultaneously connected with an operating mechanism component of the hook, and the operating mechanism component comprises a transmission shaft (35), a fixed four-clamping groove (44), a rotary four-clamping groove (45) and an operating rod stress part (38); the upper part of the transmission shaft (35) is connected with the contact cambered surface through a clamping position and a chuck, and the transmission shaft is rotatably arranged at the joint; the middle part of the transmission shaft passes through a spring (48) which provides elastic force for enabling the transmission shaft to return to a original state upwards;

two clamping points with lengthened length are arranged at the lower part of the transmission shaft and move in corresponding clamping grooves of the fixed four clamping grooves (44) and the rotary four clamping grooves (45) at the same time; the fixed four clamping grooves are fixedly connected with the hooks, and each fixed four clamping groove comprises two clamping grooves with higher height, namely a clamping groove II and a clamping groove IV which are used for providing a space for the clamping point of the transmission shaft to move up and down; the two fixing four clamping grooves also comprise two clamping grooves with shorter heights, namely a clamping groove I and a clamping groove III which realize a self-locking function on a driving clamping point;

the lower part of the rotary four clamping groove (45) is fixedly connected with the upper part of the stressed part (38) of the operating rod, the appearance of the rotary four clamping groove is consistent with that of the fixed four clamping groove, and the rotary four clamping groove is nested outside the fixed four clamping groove; the rotary four-clamping groove comprises two clamping grooves VI and VIII with higher heights, and also comprises two clamping grooves V and VII with shorter heights; the upper part of the operating rod stress part is fixedly connected with the rotary four clamping grooves, and the lower clamping point of the operating rod stress part is clamped with the operating rod groove for use;

The hook top is of an arc-shaped structure, the left hook top and the right hook top are a complete hook top which is divided into two parts along a central line, the two parts can be completely spliced together, and the hook comprises a left hook closing end, a right hook closing end, a left hook closing surface and a right hook closing surface;

the left side and the right side of the hook are the same in structure and comprise a left side hook side and a right side hook side; each side is provided with an arc-shaped pressing sheet, an arc-shaped pressing sheet fixing shaft, a torsion spring fixing shaft, a connecting rod fixing shaft and a hook fixing shaft which are symmetrically designed; the corresponding areas of the left side and the right side of the hook are provided with grooves, and the arc-shaped pressing sheet can be retracted into the grooves after being pressed;

the contact cambered surface (13) is a concave cambered surface, the contact cambered surface is a starting element for the opening or closing action of the hook, and the opening and closing functions are triggered by the contact cambered surface; two sides of the lower part of the contact cambered surface are connected with a connecting rod through a connecting rod rotating shaft, and the connecting rod rotates around the rotating shaft; the contact cambered surface can only move up and down but not rotate; the lower part of the contact cambered surface is connected with an operating mechanism of the hook through a clamping position and a chuck;

the upper part of the operating mechanism is movably connected with the contact cambered surface through a clamping position and a chuck, the operating mechanism can move upwards or downwards simultaneously with the contact cambered surface, and the operating mechanism can rotate at the connecting part without rotating the contact cambered surface;

The device also comprises a conductive copper braid, wherein two ends of the conductive copper braid are respectively and fixedly connected with two sides of the arc-shaped pressing sheet and the hook;

the grounding wire is fixed at the middle position of the lower part of the hook.

As a preferred embodiment of the present invention: the thickness of each side of the top end of the hook is one half of the thickness of the whole hook; after the hook is opened, the width of an opening formed at the two ends of the hook is larger than the diameter of the wire (66), and the width of the opening is 1.5 times of the diameter of the wire; after the hook is closed, the left hook closing end is tightly closed with the right hook closing surface, and the right hook closing end is tightly closed with the left hook closing surface; the top end of the left hook and the top end of the right hook are closed to form a complete hook, the curved path of the cambered surface formed by the inward concave shape of the closed hook is consistent with the diameter of the lead, and the cambered surface is attached to the lead; the vertical height from the top end of the hook to the bottom of the left hook closing end and the bottom of the right hook closing end is larger than the radius of the wire.

As a preferred embodiment of the present invention: the sides of the hooks on the two sides are symmetrically designed, and the shapes of the hooks are consistent; the upper part of the side edge of the left hook is fixedly connected with the top end of the left hook, and the lower part of the side edge of the left hook is connected with the bottom of the hook through a left hook fixing shaft and can rotate around the left hook fixing shaft, so that the left hook is closed and opened; the side edge of the left hook is provided with a slot at the inner side of the hook; the left side of the left hook is respectively provided with a left arc pressing piece fixing shaft and a left connecting rod fixing shaft which are connected with the left arc pressing piece and the left connecting rod, so that the left arc pressing piece and the left connecting rod rotate around the left arc pressing piece fixing shaft and the left connecting rod fixing shaft; the parts, structures and connection modes contained on the side edge of the right hook are identical with those of the side edge of the left hook.

As a preferred embodiment of the present invention: the arc-shaped pressing piece comprises a left arc-shaped pressing piece (8) and a right arc-shaped pressing piece (28), and the arc-shaped pressing pieces are symmetrically designed on the hook; each arc-shaped pressing piece is an integrally poured traceless element, two cambered surfaces which are contacted with the lead are arranged, namely an upper cambered surface and a lower cambered surface, the upper cambered surface and the lower cambered surface are completely symmetrical, and the radius of the formed cambered surface is equal to the diameter of the lead; the convex part of the middle part of each arc-shaped pressing sheet is a smooth convex surface; the upper part of the arc-shaped pressing piece is connected with the side edge of the hook through a fixed shaft and can rotate around the hook, and the middle part of the arc-shaped pressing piece is connected with the torsion spring; the arc-shaped pressing piece can be retracted into the slot on the side edge of the hook after being pressed by the lead; when the two arc-shaped pressing sheets are in an original state, the distance between the middle convex surfaces is just half of the width of the inner side of the hook.

As a preferred embodiment of the present invention: the radius of the curved surface of the contact cambered surface is equal to the radius of the lead; the lower part of the contact cambered surface is connected with the connecting rod through a left connecting rod rotating shaft (16) and a right connecting rod rotating shaft (33); the length of the contact cambered surface on the level is two thirds of the diameter of the wire, and the width is equal to the width of the hook; when the hook is retracted and closed, the lowest point of the contact cambered surface is approximately close to the bottom end of the hook, and at the moment, the cambered surface edges of the two upturned ends of the contact cambered surface are not contacted with the connecting rods on two sides, so that the work of the connecting rods is not influenced; the lower part of the contact cambered surface is of a tubular structure with a clamping structure and is used for being connected with a transmission shaft of an operating mechanism.

As a preferred embodiment of the present invention: one side of the connecting rod is connected with the contact cambered surface, and the other side of the connecting rod is connected with the left hook side (14) and the right hook side (29) through a left connecting rod fixing shaft (10) and a right connecting rod fixing shaft (30) respectively; the length of the connecting rod is approximately equal to the length of the contact cambered surface on the level; when the hook is retracted and closed, the acute angle formed by the two connecting rods is about 60 degrees.

As a preferred embodiment of the present invention: the transmission shaft (35) has a chuck-shaped structure, and the upper part of the transmission shaft is connected with a tubular clamping position at the lower part of the contact cambered surface; the transmission shaft can move up and down along with the contact cambered surface through the clamping and chuck connecting structure, and can also rotate left and right under the condition that the contact cambered surface is static; the middle part of the transmission shaft passes through a spring, the upper part of the spring is provided with a spring upper limit structure, and the spring provides elastic force for enabling the transmission shaft to restore to a original state upwards; two clamping points with lengthened length are arranged at the lower part of the transmission shaft, namely a clamping point C (50) and a clamping point D (51), and the lengths of the two clamping points are the sum of the outer walls of the fixed four clamping grooves and the rotary four clamping grooves; two stuck points are positioned at the lower part of the transmission shaft, and the height of the two stuck points meets the following conditions: when the clamping point reaches the bottoms of the fixed four clamping grooves and the rotary four clamping grooves, the clamping point can rotate left and right in the guide rail alpha (53), the guide rail beta (57), the guide rail psi (64) and the guide rail omega (60) of the fixed four clamping grooves and the rotary four clamping grooves; when the fixed four clamping grooves and the rotary four clamping grooves are overlapped, the clamping point C and the clamping point D of the transmission shaft can move up and down in the clamping grooves II and IV and can move up and down in the clamping grooves VI and VIII, or are self-locked in the clamping grooves I and III or are self-locked in the clamping grooves V and VII.

As a preferred embodiment of the present invention: the fixed four clamping grooves are fixedly connected with the hooks, and can not move up and down or rotate left and right; four clamping grooves which are open from the bottom and are mutually 90 degrees in space are respectively a clamping groove I, a clamping groove II, a clamping groove III and a clamping groove IV; the clamping groove III and the clamping groove IV are communicated through a guide rail beta; the clamping groove I and the clamping groove II are communicated through a guide rail alpha; the upper part of the fixed four clamping grooves is provided with a round hole, the aperture of the round hole is matched with the diameter of the transmission shaft, and the transmission shaft can rotate through the round hole.

As a preferred embodiment of the present invention: the rotary four clamping grooves are movable clamping groove elements and rotate along with the stressed part of the operating rod; the shape of the rotary four clamping grooves is basically consistent with that of the fixed four clamping grooves, the diameter of the rotary four clamping grooves is larger than that of the fixed four clamping grooves, and the rotary four clamping grooves are directly nested outside the fixed four clamping grooves through the through holes at the upper parts; the lower parts of the rotating four clamping grooves are fixedly connected with the upper part of the stressed part of the operating rod; four clamping grooves which are open from the bottom and are mutually 90 degrees in space are respectively a clamping groove V, a clamping groove VI, a clamping groove VII and a clamping groove VIII; the appearance and the size of the four clamping grooves of the rotary four clamping grooves are consistent with those of the four clamping grooves of the fixed four clamping grooves; the clamping groove VII and the clamping groove VIII are communicated through a guide rail psi; the clamping groove V and the clamping groove VI are communicated through a guide rail omega; the four clamping grooves of the rotary four clamping grooves have the same functions as the fixed four clamping grooves, and also provide acting force for rotating the clamping points of the transmission shaft; when rotating rightwards, the clamping groove VI and the clamping groove VIII with higher heights rotate through the clamping points of the clamping groove non-guide rail sides; when rotating leftwards, the clamping groove V and the clamping groove VIII with shorter heights rotate through the clamping points of the clamping groove non-guide rail edges.

As a preferred embodiment of the present invention: the upper part of the operating rod stress part is fixedly connected with the rotary four clamping grooves, the diameter of the operating rod stress part is smaller than that of the rotary four clamping grooves, the lower limit movement position of the lower part of the operating rod stress part is limited by the rotary four clamping groove lower limit fixedly connected with the hook, and the rotary four clamping groove lower limit is used as a rotary stress platform of the operating rod stress part; the stressed part of the operating rod is exposed out through the circular through hole in the middle of the lower limit of the rotary four clamping grooves, and the lower clamping point is clamped with the groove of the operating rod for use; the pair of conductive copper braids is arranged in the left and right sides of the pair of conductive copper braids and is arranged in the slot of the hook; the upper end is fixedly connected with the arc-shaped pressing piece and can move along with the movement of the position of the arc-shaped pressing piece; the lower end is fixedly connected with the side edge of the hook; the fixed position of the grounding wire is at the geometric middle position outside the hook operating mechanism component, and the copper nose of the grounding wire is connected to the hook through a bolt.

The invention has the beneficial effects that:

the invention uses simple elements to realize the hook sealing function, and the device can reliably realize the opening sealing after being hung unless a pole is turned down or a power failure line is disconnected, so that the hook is firmly and reliably hung on a power failure wire and cannot fall off under the unexpected condition, the safety of equipment or line power failure operation is directly improved, and the life and property safety of maintainers is ensured. The device has the advantages of simple and reliable structure, convenient operation and use, convenient storage and maintenance.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a schematic illustration of a hanger according to an embodiment of the present invention from a front view after opening;

FIG. 3 is a schematic illustration of a wire press-down contact cambered surface from a front view direction according to one embodiment of the invention;

FIG. 4 is a schematic illustration of a hook according to an embodiment of the present invention from a front view after a wire is attached thereto;

FIG. 5-1 is a front view of an embodiment of the present invention;

FIG. 5-2 is a left side view of an embodiment of the present invention;

FIGS. 5-3 are top views of one embodiment of the present invention;

FIG. 6 is a schematic view of an operating mechanism according to an embodiment of the present invention;

FIG. 7-1 is a schematic illustration of the contact camber, the on-drive shaft detent and the on-drive shaft chuck being separated in accordance with one embodiment of the present invention;

FIG. 7-2 is a schematic view of a combination of a contact camber, a chuck on a drive shaft, and a chuck on a drive shaft according to an embodiment of the present invention;

FIG. 8 is a schematic top view of a drive shaft, a chuck on the drive shaft, a spring, a limit on the spring, a stuck point C and a stuck point D according to an embodiment of the present invention;

FIG. 9-1 is a schematic illustration of a fixed four-card slot and a rotating four-card slot separated structure according to an embodiment of the present invention;

FIG. 9-2 is a schematic diagram of a combination of a fixed four-card slot and a rotating four-card slot according to an embodiment of the present invention;

FIG. 10 is a schematic view of the structure of the force-bearing portion of the lever according to one embodiment of the present invention;

FIGS. 11-1 to 11-3 are schematic views illustrating the operation of step (11);

FIGS. 12-1 to 12-3 are schematic views showing the operation of step (21);

FIGS. 13-1 to 13-3 are schematic views illustrating the operation of step (31);

FIGS. 14-1 to 14-3 are schematic views showing the operation of step (41).

Reference numerals illustrate:

1-right hook closing end, 2-left hook closing end, 3-left hook top, 4-left hook closing face, 5-left arc pressing fixed shaft, 6-left torsion spring, 7-torsion spring fixed shaft, 8-left arc pressing, 9-hook side slot, 10-left connecting rod fixed shaft, 11-left connecting rod, 12-hook bottom slot, 13-contact cambered surface, 14-left hook side, 15-left hook fixed shaft, 16-left connecting rod rotating shaft, 17-operating mechanism part, 18-ground wire fixed position, 19-ground wire copper nose, 20-fixing bolt, 21-clip point A, 22-groove U, 23-operating lever, 24-right hook top, 25-right hook closing surface, 26-right arc-shaped pressing fixing shaft, 27-right torsion spring, 28-right arc-shaped pressing plate, 29-right hook side, 30-right connecting rod fixing shaft, 31-right connecting rod, 32-right hook fixing shaft, 33-right connecting rod rotating shaft, 34-contact arc lower end stress part, 35-transmission shaft, 36-rotation four-clamping groove lower limit, 37-clamping point B, 38-operation rod stress part, 39-groove V, 40-conductive copper braid, 41-fixed connection structure, 42-transmission shaft perforation O, 43-spring lower limit, 44-fixed four-clamping groove, 45-rotation four-clamping groove, 46-transmission shaft upper clamping position, 47-transmission shaft upper chuck, 48-spring, 49-spring upper limit, 50-clamping point C, 51-clamping point D, 52-clamping groove I, 53-guide rail alpha, 54-transmission shaft perforation P, 55-clamping groove II, 56-clamping groove IV, 57-guide rail beta, 58-clamping groove III, 59-clamping groove V, 60-guide rail omega, 61-rotation four-clamping groove perforation, 62-clamping groove VI, 63-clamping groove VIII, 64-guide rail psi, 65-clamping groove VII, 66-guide wire.

Detailed Description

The following describes specific embodiments of the invention with reference to the drawings and examples:

as shown in the figure, the invention discloses a specific embodiment, relates to the technical field of implementation of safety measures of ground wire hooks after power failure of electric equipment of a power system, and in particular relates to a novel double-hook type ground wire anti-drop hook device with an open top in safety measures of electric equipment after power failure of a transformer substation or a power transmission and distribution line.

As shown in the figure, the invention discloses a double-hook type grounding wire anti-drop hook device with an open top, which comprises a grounding wire main hook, wherein the grounding wire main hook comprises a left hook top end 3, a right hook top end 24, a left hook side edge 14, a right hook side edge 29, an arc-shaped pressing sheet, a torsion spring, a contact arc surface 13, a connecting rod and other related accessory parts and an operating mechanism part 17 of the main hook; the hook can be opened or closed under the control of the connecting rod; after the hook is closed, the lead 66 can be firmly clamped on the upper part of the hook under the action of the arc-shaped pressing piece; the triggering element for opening and closing the hook is a contact cambered surface 13; the left and right sides below the contact cambered surface 13 are respectively connected with a connecting rod, the connecting rod is connected with hooks on the two sides, and the connecting rod directly performs the function of opening or closing the hooks; the lower part of the contact cambered surface 13 is simultaneously connected with an operating mechanism of the hook, and the operating mechanism comprises a transmission shaft 35, a fixed four-clamping groove 44, a rotary four-clamping groove 45 and an operating rod stress part 38; the upper part of the transmission shaft 35 is connected with the contact cambered surface 13 through a clamping position 46 and a chuck 47, and the transmission shaft 35 can rotate at the joint; the middle part of the transmission shaft 35 passes through a spring 48, and the spring 48 provides elastic force for enabling the transmission shaft 13 to return to a original state upwards; two clamping points with lengthened length are arranged at the lower part of the transmission shaft 35, and the two clamping points can move in the corresponding clamping grooves of the fixed four clamping grooves 44 and the rotary four clamping grooves 45 at the same time; the fixed four clamping grooves 44 are fixedly connected with the hooks, and are provided with two clamping grooves with higher heights, namely a clamping groove II 55 and a clamping groove IV 56, and the clamping grooves are used for providing a space for the clamping points of the transmission shaft to move up and down; two clamping grooves with shorter heights, namely a clamping groove I52 and a clamping groove III 58, are used for realizing the self-locking function of the clamping point of the transmission shaft 35; the lower part of the rotary four clamping groove 45 is fixedly connected with the upper part of the operating rod stress part 38, the appearance of the rotary four clamping groove 45 is basically consistent with that of the fixed four clamping groove 44, and the rotary four clamping groove 45 can be nested outside the fixed four clamping groove 44 only when the diameter size is larger than that of the fixed four clamping groove 44; two clamping grooves with higher heights of the rotary four clamping grooves 45 are a clamping groove VI 62 and a clamping groove VIII 63; the two shorter clamping grooves are a clamping groove V59 and a clamping groove VII 65; the four clamping grooves of the rotary four clamping grooves 45 have the same functions as the fixed four clamping grooves 44, and also provide acting force for enabling the clamping points of the transmission shaft 35 to act and rotate; the upper part of the operating rod stress part 38 is fixedly connected with the rotary four clamping grooves 45, and the lower clamping point is clamped with the operating rod groove for use;

The hook top end is of an arc-shaped structure and comprises a left hook top end 3 and a right hook top end 24; the left hook top end 3 and the right hook top end 24 can be regarded as a complete hook top end which is divided into two parts along the midline, the two parts can be completely spliced together, and the main structure comprises a left hook closing end 2, a right hook closing end 1, a left hook closing surface 4 and a right hook closing surface 25;

the left side and the right side of the hook are the same in structure and mainly comprise a left side hook side 14 and a right side hook side 29; each side is provided with an arc-shaped pressing sheet, an arc-shaped pressing sheet fixing shaft, a torsion spring fixing shaft, a connecting rod fixing shaft and a hook fixing shaft which are symmetrically designed; the corresponding areas of the left side and the right side of the hook are provided with grooves, and the arc-shaped pressing sheet can be retracted into the grooves after being pressed;

the contact cambered surface 13 is a concave cambered surface, the contact cambered surface 13 is an important starting element for the opening or closing action of the hook, and the opening and closing functions are triggered by the starting element; two sides of the lower part of the contact cambered surface 13 are connected with a connecting rod through a connecting rod rotating shaft, and the connecting rod can rotate around the rotating shaft; the contact cambered surface 13 can only move up and down but cannot rotate; the lower part of the contact cambered surface 13 is connected with an operating mechanism of the hook through a clamping position 46 and a chuck 47;

The upper part of the operating mechanism is movably connected with the contact cambered surface 13 through the clamping position 46 and the chuck 47, the operating mechanism can move upwards or downwards simultaneously with the contact cambered surface 13 through the connecting mechanism, and meanwhile, the operating mechanism can rotate at the connecting position without rotating the contact cambered surface 13; the operating mechanism mainly realizes the self-locking function after the hook is closed, so that the hook cannot be opened by itself;

the two ends of the conductive copper braid 40 are respectively and fixedly connected to the two sides of the arc-shaped pressing sheet and the hook;

the ground wire fixing part 18 is arranged at the middle position of the lower part of the hook.

In some preferred embodiments, as shown in FIG. 1: the hook top comprises a left hook top 3 and a right hook top 24, and the thickness of each side of the hook top is one half of that of the whole hook; after the hook is opened, the width of the opening formed at the two ends of the hook is larger than the diameter of the wire and is about 1.5 times of the diameter of the wire, so that the wire 66 can conveniently enter the hook from the opening; after the hook is closed, the left hook closing end 2 is tightly closed with the right hook closing surface 25, and the right hook closing end 1 is tightly closed with the left hook closing surface 4; the left hook top end 3 and the right hook top end 24 become a complete hook after being closed, the cambered surface curved path formed by the concave part of the complete hook is consistent with the diameter of the wire 66, and the cambered surface can be firmly attached to the wire 66; the vertical height from the hook tip to the bottom of the left hook closure end 2 and the bottom of the right hook closure end 1 is slightly greater than the radius of the wire 66. The embodiment specifically discloses key information such as specific structure and size of the hook; the purpose of the vertical height from the top end of the hook to the bottom of the left hook closing end 2 and the bottom of the right hook closing end 1 after the hook is closed in the embodiment being slightly larger than the radius of the wire 66 is that: after the hook is hung on the lead 66, even if the hook self-locking device fails, the hook can be reliably hung on the lead 66 without being separated, and after all, the closing end of the hook exceeds the radius of the lead 66.

In some preferred embodiments, as shown in FIG. 1: the hook side edges comprise a left hook side edge 14 and a right hook side edge 29, and the hook side edges on the two sides are symmetrically designed and have the same shape; the upper part of the side edge 14 of the left hook is fixedly connected with the top end 3 of the left hook, and the lower part of the side edge 14 of the left hook is connected with the bottom of the hook through a left hook fixing shaft 15 and can rotate around the left hook to realize the closing and opening of the left hook; the left side hook side 14 is provided with a slot 9 at the inner side of the hook, and the width and depth of the slot 9 can meet the requirement that the arc-shaped pressing sheet is placed in the slot; the left hook side 14 is respectively provided with a left arc-shaped pressing piece fixing shaft 5 and a left connecting rod fixing shaft 10 which are connected with the left arc-shaped pressing piece 8 and the left connecting rod 11 so that the left arc-shaped pressing piece 8 and the left connecting rod 11 can rotate around the left arc-shaped pressing piece fixing shaft and the left connecting rod fixing shaft; similarly, the right hook side edge 29 includes the same components, structures and connections as the left hook side edge 14. The present embodiment specifically discloses a link structure of the hook side edge specifically, which realizes that the left hook side edge 14 and the right hook side edge 29 rotate around the hook fixing shaft to close and open the hook.

In some preferred embodiments, as shown in fig. 1 and 2: the arc-shaped pressing pieces comprise a left arc-shaped pressing piece 8 and a right arc-shaped pressing piece 28 which are symmetrically designed on the hook; each arc-shaped pressing piece is a whole poured traceless element, two cambered surfaces which are contacted with the lead 66 are arranged, namely an upper cambered surface and a lower cambered surface, the upper cambered surface and the lower cambered surface are completely symmetrical, and the radius of the formed cambered surface is equal to the diameter of the lead 66; the convex part of the middle part of each arc-shaped pressing sheet is a smooth convex surface; the upper part of the arc-shaped pressing piece is connected with the side edge of the hook through a fixed shaft and can rotate around the hook, and the middle part of the arc-shaped pressing piece is connected with the torsion spring; the arc-shaped pressing piece can be retracted into the slot 9 on the side edge of the hook after being pressed by the lead 66; when the two arc-shaped pressing sheets are in an original state, the distance between the middle convex surfaces is just half of the width of the inner side of the hook. The embodiment specifically discloses a specific linkage structure and a specific linkage shape of the left arc-shaped pressing piece 8 and the right arc-shaped pressing piece 28, and the clamping of the arc-shaped pressing pieces after being matched with a fixed shaft and a torsion spring to reliably realize the wire suspension is realized; the cambered surface is used for matching the outer diameter of the wire 66, so that the wire 66 is clamped more reliably; the structure that the upper cambered surface and the lower cambered surface of each cambered pressing piece are completely symmetrical, the design of the groove 9 on the side edge of the hook and the distance between the middle convex surfaces can lead the whole hook structure and the size to be more reasonable.

In some preferred embodiments, as shown in FIGS. 7-1, 7-2: the radius of the curved surface of the contact cambered surface 13 is equal to the radius of the conducting wire 66; the lower part of the contact cambered surface 13 is connected with a connecting rod through a left connecting rod rotating shaft 16 and a right connecting rod rotating shaft 33; the length of the contact cambered surface 13 on the horizontal level is two thirds of the diameter of the wire 66, and the width is equal to the width of the hook; when the hook is retracted and closed, the lowest point of the contact cambered surface 13 is approximately close to the bottom end of the hook, and at the moment, the cambered surface edges of the two ends of the contact cambered surface 13 are not contacted with the connecting rods on the two sides, so that the work of the connecting rods is not influenced; the lower part of the contact cambered surface 13 is a tubular structure with a clamping structure and is used for being connected with a transmission shaft 35 of an operating mechanism. The present embodiment discloses a specific structure of the contact cambered surface 13, and the conductive wire 66 is reliably contacted with the contact cambered surface 13 through the cambered surface. The size and the movement position of the contact cambered surface are not mutually collided with other elements; the specific linkage structure of the transmission shaft 35 and the lower part of the contact cambered surface 13 realizes the reliable and ingenious connection between the contact cambered surface 13 and the transmission shaft 35.

In some preferred embodiments, as shown in FIG. 1: one side of the connecting rod is connected with the contact cambered surface 13, and the other side of the connecting rod is connected with the left hook side 14 and the right hook side 29 through the left connecting rod fixing shaft 10 and the right connecting rod fixing shaft 30 respectively; the length of the connecting rod is approximately equal to the length of the contact cambered surface 13 on the level; when the hook is retracted and closed, the acute angle formed by the two connecting rods is about 60 degrees. The embodiment specifically discloses a connecting rod, the specific linkage structure of connecting rod fixed axle, size and specific motion form, has realized that the couple side is rotatory around the couple fixed axle to realize opening or closing of couple, make the realization of couple switching function more reliable.

In some preferred embodiments, as shown in FIG. 8: the transmission shaft 35 is provided with a chuck 47-shaped structure, and the upper part of the transmission shaft is connected with a tubular clamping position 46 at the lower part of the contact cambered surface 13; the transmission shaft 35 can move up and down along with the contact cambered surface 13 through the connection structure of the clamping position 46 and the chuck 47, and can also rotate left and right under the condition that the contact cambered surface 13 is static; the middle part of the transmission shaft passes through the spring 48, a spring upper limit structure 49 is arranged at the upper part of the spring 48, and the spring 48 provides elastic force for enabling the transmission shaft 35 to return to a original state upwards; the lower part of the transmission shaft 35 is provided with two clamping points with lengthened length, namely a clamping point C50 and a clamping point D51, and the lengths of the two clamping points are the sum of the outer walls of the fixed four clamping grooves 44 and the rotary four clamping grooves 45; two snap points are located in the lower part of the drive shaft 35, the height of which satisfies: when the clamping point reaches the bottoms of the clamping grooves of the fixed four clamping groove 44 and the rotary four clamping groove 45, the clamping point can rotate left and right in the guide rail alpha 53, the guide rail beta 57, the guide rail psi 64 and the guide rail omega 60 of the fixed four clamping groove and the rotary four clamping groove; when the fixed four clamping grooves 44 and the rotary four clamping grooves 45 are overlapped (namely, when all clamping groove positions are overlapped), the clamping point C50 and the clamping point D51 of the transmission shaft can move up and down in the clamping grooves II 55 and IV 56 and can move up and down in the clamping grooves VI 62 and VIII 63, or are self-locked in the clamping grooves I52 and III 58 or are self-locked in the clamping grooves V59 and VII 65. The embodiment specifically discloses a clamping position 46, a chuck 47, a spring limit 49, a spring 48 and a clamping point specific structure of the transmission shaft, and the clamping mechanism has a strict structure, is reliable and simple, and realizes a self-locking function and a locking releasing function.

In some preferred embodiments, as shown in FIGS. 9-1, 9-2: the fixed four clamping grooves 44 are fixedly connected with the hooks, and can not move up and down or rotate left and right; four clamping grooves which are open from the bottom and are mutually 90 degrees in space are respectively a clamping groove I52, a clamping groove II 55, a clamping groove III 58 and a clamping groove IV 56; the clamping groove II 55 and the clamping groove IV 56 are higher, the heights of the clamping groove II and the clamping groove IV 56 are consistent with the height formed by the up-and-down movement of the contact cambered surface 13, and the clamping groove II and the clamping groove IV 56 are used for providing a space for the clamping point of the transmission shaft 35 to move up and down; namely, the clamping groove I52 and the clamping groove III 58 are shorter, and the heights of the clamping groove I and the clamping groove III are slightly higher than the diameter of the clamping point of the driving shaft, so that the self-locking function of the clamping point of the driving shaft 35 is realized; the clamping groove III 58 is communicated with the clamping groove IV 56 through a guide rail beta 57; the clamping groove I52 and the clamping groove II 55 are communicated through a guide rail alpha 53; the upper part of the fixed four clamping grooves 44 is provided with a round hole, the aperture of the round hole is matched with the diameter of the transmission shaft 35, and the transmission shaft 35 can rotate through a transmission shaft perforation P54. The embodiment specifically discloses a specific structure and dimensions of four clamping grooves and 2 guide rails on the four clamping grooves 44, and the self-locking function and the unlocking function are realized by matching the clamping points of the transmission shaft 35.

In some preferred embodiments, as shown in FIGS. 9-1, 9-2: the rotary four-clamping groove 45 is a movable clamping groove element and can rotate along with the stress part 38 of the operating rod; the shape of the rotary four clamping groove 45 is basically consistent with that of the fixed four clamping groove 44, the diameter is larger than that of the rotary four clamping groove, and the rotary four clamping groove 45 is directly nested outside the fixed four clamping groove 44 through the rotary four clamping groove perforation 61 at the upper part; the lower part of the rotary four clamping grooves 45 is fixedly connected with the upper part of the operating rod stress part 38; four clamping grooves which are open from the bottom and are mutually 90 degrees in space are respectively a clamping groove V59, a clamping groove VI 62, a clamping groove VII 65 and a clamping groove VIII 63; the appearance and the size of the four clamping grooves of the rotary four clamping grooves 45 are consistent with those of the four clamping grooves of the fixed four clamping grooves 44; the clamping groove VII 65 and the clamping groove VIII 63 are communicated through a guide rail psi 64; the clamping groove V59 and the clamping groove VI 62 are communicated through a guide rail omega 60; the four clamping grooves of the rotary four clamping grooves 45 have the same functions as the fixed four clamping grooves 44 and also provide acting force for rotating the clamping points of the transmission shaft 35; when rotating rightwards, the clamping groove VI 62 and the clamping groove VIII 63 with higher heights rotate through the clamping points of the clamping groove non-guide rail sides; when rotating leftwards, the clamping groove V59 and the clamping groove VIII 63 with shorter heights rotate through the clamping points of the clamping groove non-guide rail edges. The embodiment specifically discloses a specific structure and dimensions of four clamping grooves and 2 guide rails of the rotary four clamping grooves 45, which are power elements for realizing self-locking function and unlocking function and applying to clamping points of the transmission shaft 35; of course, when no power is applied to the clamping point of the transmission shaft, the clamping point of the transmission shaft 35 also normally moves or is self-locked in the clamping groove and the guide rail, so that the appearance of the clamping point is consistent with that of the fixed four clamping grooves 44.

In some preferred embodiments, as shown in fig. 1 and 10: the upper part of the operating rod stress part 38 is fixedly connected with a rotary four-clamping groove 45, the diameter of the operating rod stress part 38 is smaller than that of the rotary four-clamping groove 45, the lower limit movement position of the operating rod stress part 38 is limited by a rotary four-clamping groove lower limit 36 fixedly connected with a hook, and the rotary four-clamping groove lower limit 36 is used as a rotary stress platform of the operating rod stress part 38; the operation rod stress part 38 is exposed outside through the middle circular through hole of the rotary four-clamping-groove lower limit 36, and the lower clamping point is clamped with the groove of the operation rod 23. The present embodiment specifically discloses the construction of the lever receiving portion 38, which enables the conversion of the lever force into a rotational force exerted on the operating mechanism 17.

In some preferred embodiments, as shown in FIGS. 1, 5-2, 5-3: the pair of conductive copper braids 40 is arranged in the hook slot 9, and the left and right conductive copper braids are respectively arranged in the pair; the upper end is fixedly connected with the arc-shaped pressing piece and can move along with the movement of the position of the arc-shaped pressing piece; the lower end is fixedly connected with the side edge of the hook. The conductive copper braid 40 in the embodiment is beneficial to increasing the conductivity and increasing the reliability of grounding after hooking the hook; the internal slot 9 can reduce abrasion and improve safety.

In some preferred embodiments, as shown in FIG. 1: the grounding wire fixing part 18 is arranged at the geometric middle position outside the hook operating mechanism 17, and the grounding wire copper nose 19 is connected to the hook through the bolt 20. In this embodiment, the ground wire fixing part 18 is located at the middle position of the hook, and in the lifting process of the hook, the weight of the ground wire is relatively heavy, so that the gravity center of the weight of the ground wire and the operating rod 23 are on the same straight line, the balance is better, and the ground wire is more convenient for the operation and use of staff.

As shown in fig. 11-1, 11-2, 11-3, step (11): when the hook is required to be installed and used, the hook is opened, the left connecting rod 11 and the right connecting rod 31 are in a straight line, so that the left hook side 14 and the right hook side 29 are respectively rotated and inclined to a certain position around the left hook fixing shaft 15 and the right hook fixing shaft 32 and are maintained; at this time, the contact cambered surface 13 is at the highest point of the parallel position connected with the left connecting rod 11 and the right connecting rod 31; the drive shaft 35 is kept in an original state by the spring 48; the parts of the clamping point C50 and the clamping point D51 of the transmission shaft 35, which are close to the inner sides, are positioned at the top parts of the clamping grooves IV 56 and II 55 of the fixed four clamping grooves 44, and the parts of the clamping points, which are close to the outer sides, are positioned at the top parts of the clamping grooves VIII 63 and VI 62 of the rotary four clamping grooves 45; all other elements such as the left arc-shaped pressing piece 8, the right arc-shaped pressing piece 28 and the like are in the original state; the wire 66 can enter the interior of the hook from the top opening of the hook; the above description is consistent with the state of each element shown in the action diagrams of fig. 11-1 to 11-3.

As shown in fig. 12-1, 12-2, 12-3, step (21): the hook of the opening is lifted upwards by the operating rod 23, so that the lead 66 passes through the opening of the hook; continuously lifting the operating rod 23 to enable the contact cambered surface 13 to be in direct contact with the lead 66, and lifting the operating rod 23 to enable the lead 66 to press down the contact cambered surface 13; at this time, the downward contact cambered surface 13 drives the left connecting rod 11 and the right connecting rod 31 to move downwards through the left connecting rod rotating shaft 16 and the right connecting rod rotating shaft 33, and the left connecting rod 11 and the right connecting rod 31 are retracted downwards to form an included angle of about 60 degrees; the left hook side edge 14 and the right hook side edge 29 are respectively driven by the left connecting rod 11 and the right connecting rod 31 to rotate around the left hook fixing shaft 15 and the right hook fixing shaft 32 so as to close the hook opening; the downward movement of the drive shaft 35 compresses the spring 48; the parts of the clamping point C50 and the clamping point D51 of the transmission shaft 35, which are close to the inner sides, are positioned at the bottoms of the clamping grooves IV 56 and II 55 of the fixed four clamping grooves 44, and the parts of the transmission shaft, which are close to the outer sides, are positioned at the bottoms of the clamping grooves VIII 63 and VI 62 of the rotary four clamping grooves 45; all other elements such as the left arc pressing piece 8, the right arc pressing piece 28 and the like are not contacted with the lead 66 at this time, so that the elements are in an original state; the above description is consistent with the state of each element shown in the action diagrams of fig. 12-1 to 12-3.

As shown in fig. 13-1, 13-2, 13-3, step (31): the hook keeps the wire 66 pressed against the contact cambered surface 13, and the operating rod 23 is rotated clockwise by 90 degrees; the clamping point C50 and the clamping point D51 of the transmission shaft 35 are positioned at the outer sides, and the action of the grooved edges of the clamping grooves VIII 63 and VI 62 of the rotary four clamping groove 45 is clockwise rotated by 90 degrees along the guide rail psi 64 and the guide rail omega 60 to reach the clamping grooves VII 65 and V59 of the rotary four clamping groove 45; the parts of the clamping point C50 and the clamping point D51 of the transmission shaft 35, which are close to the inner sides, synchronously rotate 90 degrees clockwise along the guide rail beta 57 and the guide rail alpha 53 from the bottoms of the clamping grooves IV 56 and II 55 of the fixed four clamping grooves 44 to reach the clamping grooves III 58 and I52 of the fixed four clamping grooves 44 respectively; after the rotation process is finished, the lead 66 is removed from the pressure on the contact cambered surface 13, and the parts of the clamping point C50 and the clamping point D51 of the transmission shaft 35, which are close to the inner sides, are self-locked in the clamping grooves III 58 and I52 of the fixed four clamping grooves 44; at this time, the clamping point C50 and the clamping point D51 of the transmission shaft 35 are self-locked, but the guide rail ψ64 and the guide rail ω 60 of the rotating four clamping groove 45 can slide freely on the position of the clamping point close to the outer side (i.e. the rotating four clamping shaft 45 can rotate after self-locking, but the unlocking hook can be unlocked, because the unlocking starting element of the hook is a contact cambered surface 13, if no force is applied to the contact cambered surface 13, the unlocking can not be performed); the spring 48 of the transmission shaft 35 is restored to deform to generate upward elastic force, so that the self-locking effect of the clamping point C50 and the clamping point D51 of the movable shaft 35 is reliably maintained; all other elements such as the left arc pressing piece 8, the right arc pressing piece 28 and the like are not contacted with the lead 66 at this time, so the elements are in the original state; the above description is consistent with the states of the elements shown in the action schematic diagrams of fig. 13-1 to 13-2.

As shown in fig. 14-1, 14-2, 14-3, step (41): pulling the lever 23 downward, causing the entire hook to move downward, causing the wire 66 to compress and pass through the left arcuate tab 8, the right arcuate tab 28; when the arc pressing sheets are compressed, the left arc pressing sheet 8 and the right arc pressing sheet 28 shrink into the grooves on the side edges of the hooks to enable the wires 66 to pass through; after the lead 66 passes through, the left arc pressing piece 8 and the right arc pressing piece 28 spring out under the action of the left torsion spring 6 and the right torsion spring 27, so that the lead 66 is tightly clamped at the upper part of the hook; the above description is consistent with the state of each element shown in the schematic diagrams of the actions of fig. 14-1 to 14-2.

In summary, as a preferred embodiment, the present invention discloses a novel double-hook type grounding wire anti-falling hook device with an open top, when in installation and use, the hook is opened, the left connecting rod 11 and the right connecting rod 31 are in a straight line, so that the left hook side 14 and the right hook side 29 are respectively rotated and tilted to a certain position around the left hook fixing shaft 15 and the right hook fixing shaft 32 and are maintained; at this time, the contact cambered surface 13 is at the highest point of the parallel position connected with the left connecting rod 11 and the right connecting rod 31; the drive shaft 35 is kept in an original state by the spring 48; the parts of the clamping point C50 and the clamping point D51 of the transmission shaft 35, which are close to the inner sides, are positioned at the top parts of the clamping grooves IV 56 and II 55 of the fixed four clamping grooves 44, and the parts of the clamping points, which are close to the outer sides, are positioned at the top parts of the clamping grooves VIII 63 and VI 62 of the rotary four clamping grooves 45; all other elements such as the left arc-shaped pressing piece 8, the right arc-shaped pressing piece 28 and the like are in the original state; the wire 66 can enter the interior of the hook from the top opening of the hook; the hook is lifted upwards by the operating rod 23, so that the lead 66 passes through the opening of the hook; continuously lifting the operating rod 23 to enable the contact cambered surface 13 to be in direct contact with the lead 66, and lifting the operating rod 23 to enable the lead 66 to press down the contact cambered surface 13; at this time, the downward contact cambered surface 13 drives the left connecting rod 11 and the right connecting rod 31 to move downwards through the left connecting rod rotating shaft 16 and the right connecting rod rotating shaft 33, and the left connecting rod 11 and the right connecting rod 31 are retracted downwards to form an included angle of about 60 degrees; the left hook side edge 14 and the right hook side edge 29 are respectively driven by the left connecting rod 11 and the right connecting rod 31 to rotate around the left hook fixing shaft 15 and the right hook fixing shaft 32 so as to close the hook opening; the downward movement of the drive shaft 35 compresses the spring 48; the parts of the clamping point C50 and the clamping point D51 of the transmission shaft 35, which are close to the inner sides, are positioned at the bottoms of the clamping grooves IV 56 and II 55 of the fixed four clamping grooves 44, and the parts of the transmission shaft, which are close to the outer sides, are positioned at the bottoms of the clamping grooves VIII 63 and VI 62 of the rotary four clamping grooves 45; all other elements such as the left arc pressing piece 8, the right arc pressing piece 28 and the like are not contacted with the lead 66 at this time, so that the elements are in an original state; the hook keeps the wire 66 pressed against the contact cambered surface 13, and the operating rod 23 is rotated clockwise by 90 degrees; the clamping point C50 and the clamping point D51 of the transmission shaft 35 are positioned at the outer sides, and the action of the grooved edges of the clamping grooves VIII 63 and VI 62 of the rotary four clamping groove 45 is clockwise rotated by 90 degrees along the guide rail psi 64 and the guide rail omega 60 to reach the clamping grooves VII 65 and V59 of the rotary four clamping groove 45; the parts of the clamping point C50 and the clamping point D51 of the transmission shaft 35, which are close to the inner sides, synchronously rotate 90 degrees clockwise along the guide rail beta 57 and the guide rail alpha 53 from the bottoms of the clamping grooves IV 56 and II 55 of the fixed four clamping grooves 44 to reach the clamping grooves III 58 and I52 of the fixed four clamping grooves 44 respectively; after the rotation process is finished, the lead 66 is removed from the pressure on the contact cambered surface 13, and the parts of the clamping point C50 and the clamping point D51 of the transmission shaft 35, which are close to the inner sides, are self-locked in the clamping grooves III 58 and I52 of the fixed four clamping grooves 44; at this time, the clamping point C50 and the clamping point D51 of the transmission shaft 35 are self-locked, but the guide rail ψ64 and the guide rail ω 60 of the rotating four clamping groove 45 can slide freely on the position of the clamping point close to the outer side (i.e. the rotating four clamping shaft 45 can rotate after self-locking, but the unlocking hook can be unlocked, because the unlocking starting element of the hook is a contact cambered surface 13, if no force is applied to the contact cambered surface 13, the unlocking can not be performed); the spring 48 of the transmission shaft 35 is restored to deform to generate upward elastic force, so that the self-locking effect of the clamping point C50 and the clamping point D51 of the movable shaft 35 is reliably maintained; all other elements such as the left arc pressing piece 8, the right arc pressing piece 28 and the like are not contacted with the lead 66 at this time, so the elements are in the original state; pulling the lever 23 downward, causing the entire hook to move downward, causing the wire 66 to compress and pass through the left arcuate tab 8, the right arcuate tab 28; when the arc pressing sheets are compressed, the left arc pressing sheet 8 and the right arc pressing sheet 28 shrink into the grooves on the side edges of the hooks to enable the wires 66 to pass through; after the lead 66 passes through, the left arc pressing piece 8 and the right arc pressing piece 28 spring out under the action of the left torsion spring 6 and the right torsion spring 27, so that the lead 66 is tightly clamped at the upper part of the hook; the above description is consistent with the state of each element shown in the schematic diagrams of the actions of fig. 14-1 to 14-2.

While the preferred embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention, and these changes relate to the related art well known to those skilled in the art, which fall within the scope of the present invention.

Many other changes and modifications may be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.

Claims

1. The utility model provides a top open-ended double-hook formula earth connection anti-drop couple device which characterized in that: the device comprises a ground wire main hook, wherein the ground wire main hook comprises a left hook top end (3), a right hook top end (24), a left hook side edge (14), a right hook side edge (29), an arc-shaped pressing sheet, a torsion spring, a connecting rod and an operating mechanism component (17); the main hook of the grounding wire is a hook which is opened or closed under the control of a connecting rod; the connecting rod comprises a left connecting rod (11) and a right connecting rod (31); after the hook is closed, the lead (66) is clamped on the upper part of the hook under the action of the arc-shaped pressing piece;

2. An open-topped double-hook type ground wire anti-drop hook device as defined in claim 1, wherein: the thickness of each side of the top end of the hook is one half of the whole hook; after the hook is opened, the width of an opening formed at the two ends of the hook is larger than the diameter of the wire (66), and the width of the opening is 1.5 times of the diameter of the wire; after the hook is closed, the left hook closing end is tightly closed with the right hook closing surface, and the right hook closing end is tightly closed with the left hook closing surface; the top end of the left hook and the top end of the right hook are closed to form a complete hook, the curved path of the cambered surface formed by the inward concave shape of the closed hook is consistent with the diameter of the lead, and the cambered surface is attached to the lead; the vertical height from the top end of the hook to the bottom of the left hook closing end and the bottom of the right hook closing end is larger than the radius of the wire.

3. An open-topped double-hook type ground wire anti-drop hook device as defined in claim 2, wherein: the sides of the hooks at two sides are symmetrically designed, and the shapes are consistent; the upper part of the side edge of the left hook is fixedly connected with the top end of the left hook, and the lower part of the side edge of the left hook is connected with the bottom of the hook through a left hook fixing shaft and can rotate around the left hook fixing shaft, so that the left hook is closed and opened; the side edge of the left hook is provided with a slot at the inner side of the hook; the left side of the left hook is respectively provided with a left arc pressing piece fixing shaft and a left connecting rod fixing shaft which are connected with the left arc pressing piece and the left connecting rod, so that the left arc pressing piece and the left connecting rod rotate around the left arc pressing piece fixing shaft and the left connecting rod fixing shaft; the parts, structures and connection modes contained on the side edge of the right hook are identical with those of the side edge of the left hook.

4. An open-topped double-hook type ground wire anti-drop hook device as defined in claim 1, wherein: the arc-shaped pressing piece comprises a left arc-shaped pressing piece (8) and a right arc-shaped pressing piece (28), and the arc-shaped pressing pieces are symmetrically designed on the hook; each arc-shaped pressing piece is an integrally poured traceless element, two cambered surfaces which are contacted with the lead are arranged, namely an upper cambered surface and a lower cambered surface, the upper cambered surface and the lower cambered surface are completely symmetrical, and the radius of the formed cambered surface is equal to the diameter of the lead; the convex part of the middle part of each arc-shaped pressing sheet is a smooth convex surface; the upper part of the arc-shaped pressing piece is connected with the side edge of the hook through a fixed shaft and can rotate around the hook, and the middle part of the arc-shaped pressing piece is connected with the torsion spring; the arc-shaped pressing piece can be retracted into the slot on the side edge of the hook after being pressed by the lead; when the two arc-shaped pressing sheets are in an original state, the distance between the middle convex surfaces is just half of the width of the inner side of the hook.

5. An open-topped double-hook type ground wire anti-drop hook device as defined in claim 1, wherein: the radius of the curved surface of the contact cambered surface is equal to the radius of the lead; the lower part of the contact cambered surface is connected with the connecting rod through a left connecting rod rotating shaft (16) and a right connecting rod rotating shaft (33); the length of the contact cambered surface on the level is two thirds of the diameter of the wire, and the width is equal to the width of the hook; when the hook is retracted and closed, the lowest point of the contact cambered surface is approximately close to the bottom end of the hook, and at the moment, the cambered surface edges of the two upturned ends of the contact cambered surface are not contacted with the connecting rods on two sides, so that the work of the connecting rods is not influenced; the lower part of the contact cambered surface is of a tubular structure with a clamping structure and is used for being connected with a transmission shaft of an operating mechanism.

6. An open-topped double-hook type ground wire anti-drop hook device as defined in claim 1, wherein: one side of the connecting rod is connected with the contact cambered surface, and the other side of the connecting rod is connected to the left hook side (14) and the right hook side (29) through a left connecting rod fixing shaft (10) and a right connecting rod fixing shaft (30) respectively; the length of the connecting rod is approximately equal to the length of the contact cambered surface on the level; when the hook is retracted and closed, the acute angle formed by the two connecting rods is about 60 degrees.

7. An open-topped double-hook type ground wire anti-drop hook device as defined in claim 1, wherein: the transmission shaft (35) is provided with a chuck-shaped structure, and the upper part of the transmission shaft is connected with a tubular clamping position at the lower part of the contact cambered surface; the transmission shaft can move up and down along with the contact cambered surface through the clamping and chuck connecting structure, and can also rotate left and right under the condition that the contact cambered surface is static; the middle part of the transmission shaft passes through a spring, the upper part of the spring is provided with a spring upper limit structure, and the spring provides elastic force for enabling the transmission shaft to restore to a original state upwards; two clamping points with lengthened length are arranged at the lower part of the transmission shaft, namely a clamping point C (50) and a clamping point D (51), and the lengths of the two clamping points are the sum of the outer walls of the fixed four clamping grooves and the rotary four clamping grooves; two stuck points are positioned at the lower part of the transmission shaft, and the height of the two stuck points meets the following conditions: when the clamping point reaches the bottoms of the fixed four clamping grooves and the rotary four clamping grooves, the clamping point can rotate left and right in the guide rail alpha (53), the guide rail beta (57), the guide rail psi (64) and the guide rail omega (60) of the fixed four clamping grooves and the rotary four clamping grooves; when the fixed four clamping grooves and the rotary four clamping grooves are overlapped, the clamping point C and the clamping point D of the transmission shaft can move up and down in the clamping grooves II and IV and can move up and down in the clamping grooves VI and VIII, or are self-locked in the clamping grooves I and III or are self-locked in the clamping grooves V and VII.

8. An open-topped double-hook type ground wire anti-drop hook device as defined in claim 1, wherein: the fixed four clamping grooves are fixedly connected with the hooks, and cannot move up and down or rotate left and right; four clamping grooves which are open from the bottom and are mutually 90 degrees in space are respectively a clamping groove I, a clamping groove II, a clamping groove III and a clamping groove IV; the clamping groove III and the clamping groove IV are communicated through a guide rail beta; the clamping groove I and the clamping groove II are communicated through a guide rail alpha; the upper part of the fixed four clamping grooves is provided with a round hole, the aperture of the round hole is matched with the diameter of the transmission shaft, and the transmission shaft can rotate through the round hole.

9. An open-topped double-hook type ground wire anti-drop hook device as defined in claim 1, wherein: the rotary four clamping grooves are movable clamping groove elements and rotate along with the stressed part of the operating rod; the shape of the rotary four clamping grooves is basically consistent with that of the fixed four clamping grooves, the diameter of the rotary four clamping grooves is larger than that of the fixed four clamping grooves, and the rotary four clamping grooves are directly nested outside the fixed four clamping grooves through the through holes at the upper parts; the lower parts of the rotating four clamping grooves are fixedly connected with the upper part of the stressed part of the operating rod; four clamping grooves which are open from the bottom and are mutually 90 degrees in space are respectively a clamping groove V, a clamping groove VI, a clamping groove VII and a clamping groove VIII; the appearance and the size of the four clamping grooves of the rotary four clamping grooves are consistent with those of the four clamping grooves of the fixed four clamping grooves; the clamping groove VII and the clamping groove VIII are communicated through a guide rail psi; the clamping groove V and the clamping groove VI are communicated through a guide rail omega; the four clamping grooves of the rotary four clamping grooves have the same functions as the fixed four clamping grooves, and also provide acting force for rotating the clamping points of the transmission shaft; when rotating rightwards, the clamping groove VI and the clamping groove VIII with higher heights rotate through the clamping points of the clamping groove non-guide rail sides; when rotating leftwards, the clamping groove V and the clamping groove VIII with shorter heights rotate through the clamping points of the clamping groove non-guide rail edges.

10. An open-topped double-hook type ground wire anti-drop hook device as defined in claim 1, wherein: the upper part of the operating rod stress part is fixedly connected with the rotary four clamping grooves, the diameter of the operating rod stress part is smaller than that of the rotary four clamping grooves, the lower limit movement position of the lower part of the operating rod stress part is limited by the rotary four clamping groove lower limit fixedly connected with the hook, and the rotary four clamping groove lower limit is used as a rotary stress platform of the operating rod stress part; the stressed part of the operating rod is exposed out through the circular through hole in the middle of the lower limit of the rotary four clamping grooves, and the lower clamping point is clamped with the groove of the operating rod for use; the pair of conductive copper braids is arranged in the left and right sides of the pair of conductive copper braids and is arranged in the slot of the hook; the upper end is fixedly connected with the arc-shaped pressing piece and can move along with the movement of the position of the arc-shaped pressing piece; the lower end is fixedly connected with the side edge of the hook; the fixed position of the grounding wire is at the geometric middle position outside the hook operating mechanism component, and the copper nose of the grounding wire is connected to the hook through a bolt.