CN114976701A - Ground wire anti-falling hook device with rotary cross rod seal and operation method thereof - Google Patents

Abstract

The invention discloses a ground wire anti-falling hook device with a rotary cross rod seal and an operation method thereof, and the main contents are as follows: the arc preforming is installed to the owner couple inboard, the appearance and the wire of arc preforming agree with mutually, torsion spring one end is connected with the fixed axle and torsion spring other end crimping is on the arc preforming, the owner couples the lower extreme and installs on the operating device top surface, the earth connection fixed plate is installed on operating device's left surface, operating device includes outside casing and each inside component and outside casing sees the main part from the outside to be the cuboid structure, the inside hollow circular cylinder structure that is of outside casing, outside casing side has two spouts and two spouts are spout and lower spout respectively, electrically conductive band copper pigtail both ends are connected respectively on arc preforming and main couple. The hook has a reliable structure, can effectively prevent the ground wire from falling off, and directly solves the problem of the falling off of the ground wire from the root through the structures of the upper cross rod and the lower cross rod of the hook and the mutual locking function of the upper cross rod and the lower cross rod.

Description

Grounding wire anti-drop hook device with rotary cross rod seal and operation method thereof

Technical Field

The invention relates to the technical field of electrical equipment of an electric power system, in particular to a ground wire anti-falling hook device with a rotary cross rod seal and an operation method thereof.

Background

After a power failure occurs in a transformer substation or a power transmission and distribution line, a grounding wire is installed on each possible incoming call side before the maintenance work of electrical equipment is started, effective precautionary measures are taken to prevent the grounding wire from falling off, and the hanging of the grounding wire is one of the necessary technical measures. If the ground wire is not normally installed and suspended, the ground wire is not reasonably suspended, or the ground wire falls off naturally or artificially in the working process, at the moment, a maintainer working on the power failure equipment or the power failure line is likely to be damaged by sudden power on of the power failure maintenance equipment or the power line side, or is directly exposed to induced electricity with higher voltage level generated by the charged equipment. If the high-voltage equipment is suddenly powered on without ground wire protection, the life of maintenance personnel can be injured, and meanwhile, the induced voltage on the power failure equipment, especially when a single line of the double-circuit line on the same tower has power failure, the non-power failure line can induce the unequal high voltage of thousands of volts to hundreds of kilovolts on the power failure line, and the irrecoverable injury can be brought to the maintenance personnel without the ground wire protection.

According to investigation, ground wire hooks used in a national power grid limited company system are all hooks of the same standard and model, and can be firmly hung on a power failure lead to a certain extent, but under unexpected conditions, external acting force can change the hanging posture of the hooks and even directly knock the hooks off the power failure lead, related casualties occur in the system, other cases similar to ground wire falling induced electric shock are more, and all open type hooks cannot completely and effectively prevent the ground wire from falling. The measures adopted in the power system for preventing the grounding wire from falling are generally to monitor the suspension state of the grounding wire in a safety way before work and during work, or to supplement the effect by a method of winding the grounding wire, so that the problems of omission or other accidents exist in field work, and the problem of falling of the grounding wire is not solved fundamentally.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a ground wire anti-falling hook device with a rotary cross rod seal and an operation method thereof, aiming at the defects in the prior art, the structure is reliable, the ground wire can be effectively prevented from falling off, and the problem that the ground wire falls off is directly solved fundamentally through the structures of the upper cross rod and the lower cross rod of the hook and the mutual locking function of the upper cross rod and the lower cross rod.

The technical scheme adopted by the invention for solving the technical problems is as follows: a grounding wire anti-drop hook device with a rotary cross rod seal comprises an arc-shaped pressing sheet, a torsion spring, a main hook, a fixing shaft, an upper cross rod, a grounding wire fixing plate, a fixing bolt, an operating mechanism, a grounding wire and a conductive flat copper braid, wherein the arc-shaped pressing sheet is installed on the inner side of the main hook, the bottom of each arc-shaped pressing sheet is fixedly connected onto the main hook through the fixing shaft and can rotate around the fixing shaft, the shape of each arc-shaped pressing sheet is matched with a wire, the arc-shaped pressing sheet can be tightly pressed on the wire under the action of the torsion spring, one end of the torsion spring is connected with the fixing shaft, the other end of the torsion spring is pressed on the arc-shaped pressing sheet, a main hook notch is arranged on the main hook, the right end of the upper cross rod is installed on the main hook notch, the lower end of the main hook is fixedly installed on the top surface of the operating mechanism, the grounding wire fixing plate is installed on the left side surface of the operating mechanism through the fixing bolt, the utility model discloses a lead frame, including the ground connection, operating device, outside casing and main couple, ground connection fixed mounting is on the ground connection fixed plate, operating device includes that outside casing and inside each component and outside casing see the main part from the outside for the cuboid structure, the place that outside casing and main couple combine is three-dimensional trapezoidal linking structure, the inside cavity cylinder structure and the cavity cylinder structure bottom of being of outside casing are circular trompil, outside casing is enclosed construction with the top that three-dimensional trapezoidal combination, outside casing side has two spouts and two spouts to be spout and lower chute respectively, outside casing inboard has two support rings and two support rings to be last support ring and under bracing ring respectively, electrically conductive band copper pigtail both ends are fixed connection respectively on arc preforming and main couple.

Further, the method comprises the following steps: the operating mechanism comprises an upper spring, a lower spring, an upper operating element, a lower cross rod, an upper supporting ring, a lower supporting ring, an upper disc and a lower disc, wherein the upper operating element is arranged on the lower operating element through a fixing rivet, the upper disc is fixedly arranged on the upper operating element, the lower disc is fixedly arranged on the lower operating element, the lower cross rod is fixedly arranged on the lower operating element, the upper spring is sleeved on the upper operating element, the lower spring is sleeved on the lower operating element, and the upper cross rod is arranged on the upper operating element.

Further, the method comprises the following steps: the upper chute is provided with a chute track and two clamping grooves, the two clamping grooves are respectively a clamping groove I and a clamping groove II, the height of the chute track is equal to that of the clamping groove, the chute track positions at the lower parts of the clamping groove I and the clamping groove II are named as an A point position and a B point position respectively, and an included angle between the clamping groove I and the clamping groove II and a virtual extension line of the hollow cylindrical structure is 90 degrees; the width and the height of the clamping groove are equal, the connecting line of the clamping groove II and the circle center of the hollow cylindrical structure is parallel to the plane leftwards, and the positions of the upper sliding groove clamping groove II and the upper sliding groove clamping groove B are at the same height as the notch of the main hook.

Further, the method comprises the following steps: the lower sliding groove is provided with a sliding groove track and two clamping grooves, the two clamping grooves are respectively a clamping groove III and a clamping groove IV, the height of the sliding groove track is equal to the height of the clamping grooves, the sliding groove track positions at the lower parts of the clamping grooves III and IV are named as a C point position and a D point position respectively, the included angle between the clamping grooves III and IV and the virtual extension line of the hollow cylindrical structure is 90 degrees, the width and the height of the clamping grooves are equal, the connecting line of the clamping grooves IV and the center of the hollow cylindrical structure is parallel to the plane leftwards, and the height between the lower sliding groove and the upper sliding groove is equal.

Further, the method comprises the following steps: the upper operating element comprises a cylindrical main body, an upper cross rod, an upper disc and an upper non-cylindrical structure, the cylindrical main body, the upper cross rod, the upper disc and the upper non-cylindrical structure are fixedly connected, the height of the upper operating element is equal to the sum of the cylindrical main body and the upper non-cylindrical structure, the top of the cylindrical main body is flush with the top of the upper cross rod, the cross section of the upper cross rod is square, the size of the upper cross rod is smaller than that of a clamping groove I and a clamping groove II in the upper sliding groove, the length of the upper cross rod is equal to that of a main hook, the direction of the upper cross rod is parallel to the plane of the upper non-cylindrical structure, the diameter of the upper disc is larger than that of the cylindrical main body of the upper operating element, and the cross section of the upper non-cylindrical structure is one-third of a circle.

Further, the method comprises the following steps: the lower operating element comprises a cylindrical main body, a lower disc, a lower non-cylindrical structure and a lower cross bar, the cylindrical main body, the lower disc, the lower non-cylindrical structure and the lower cross bar are fixedly connected, the top of the lower cross bar is flush with the top of the lower non-cylindrical structure, the cross section of the lower cross bar is square, the size of the cross section of the lower cross bar is smaller than that of a clamping groove III and a clamping groove IV of a lower sliding groove, and the direction of the lower cross bar is parallel to the plane of the lower non-cylindrical structure; the diameter of the lower disc is larger than that of the cylindrical main body of the lower operating element, the diameter of the lower disc is equal to the outer diameter of the lower spring, the section of the lower non-cylindrical structure is a third of two circles, and the plane of the lower non-cylindrical structure, which is attached to the upper non-cylindrical structure, is parallel to the lower cross rod; the cylindrical body diameter of the lower operating element and the cylindrical body diameter of the upper operating element are equal.

Further, the method comprises the following steps: the height of the tracks of the clamping groove I, the clamping groove II and the upper sliding groove of the upper sliding groove is equal, and the height of the tracks of the clamping groove III, the clamping groove IV and the lower sliding groove of the lower sliding groove is equal.

Further, the method comprises the following steps: the top of the upper non-cylindrical structure of the upper operating element and the top of the lower non-cylindrical structure of the lower operating element are equal in height, and the bottom of the upper non-cylindrical structure of the upper operating element and the bottom of the lower non-cylindrical structure of the lower operating element are equal in height.

Further, the method comprises the following steps: the distance between the upper cross rod and the lower cross rod is equal to the distance between the lower sliding groove and the upper sliding groove.

Further, the method comprises the following steps: the free end of the main hook is provided with a main hook notch, and the opening direction of the main hook notch is perpendicular to the plane formed by the free end of the main hook and the connecting end of the grounding wire.

An operation method of a ground wire anti-falling hook device with a rotary cross rod seal comprises the following steps:

the method comprises the following steps: before the hook is installed and used, the arc-shaped pressing sheet of the main hook is in a closed state, the upper cross rod reliably seals the opening of the main hook, the upper spring is in a natural extension state, the upper cross rod of the upper operating element is reliably locked in the clamping groove II of the upper chute under the action of the upper spring, the lower spring is in a natural extension state, the lower cross rod of the lower operating element is reliably locked in the clamping groove IV of the lower chute under the action of the lower spring, and the upper non-cylindrical structure of the upper operating element is flush with the lower non-cylindrical structure of the lower operating element;

step two: when the hook needs to be installed and used, the lower operating element is pulled downwards, the lower spring is compressed, the lower cross rod of the lower operating element enters a D point position downwards from the clamping groove IV of the lower sliding groove, the upper non-cylindrical structure of the upper operating element is not flush with the lower non-cylindrical structure of the lower operating element, the top of the movable groove on the lower non-cylindrical structure of the lower operating element is contacted with the upper non-cylindrical structure of the upper operating element, the upper operating element moves downwards along with the downward movement of the lower operating element, the upper spring is compressed, and the upper cross rod of the upper operating element enters a B point position downwards from the clamping groove II of the upper sliding groove;

step three: rotating the lower operating element 90 degrees clockwise, the upper operating element rotating 90 degrees with the lower operating element, the lower cross bar of the lower operating element entering the C point position clockwise and leftwards from the D point position of the lower chute, the upper cross bar of the upper operating element entering the A point position clockwise and leftwards from the B point position of the upper chute, the upper non-cylindrical structure of the upper operating element and the lower non-cylindrical structure of the lower operating element being not level up and down, the upper spring being compressed, the lower spring being compressed, the upper cross bar opening the main hook opening;

step four: the force applied to the lower operating element is removed, the upper spring restores to a natural extension state, the upper cross rod of the upper operating element is pushed into the upper chute clamping groove I and is reliably locked, the lower operating element on the one hand enters the upper chute clamping groove III upwards through the upper non-cylindrical structure and the lower non-cylindrical structure, on the other hand, the lower spring restores to a natural extension state, the lower cross rod of the lower operating element is also pushed into the lower chute clamping groove III and is reliably locked, and at the moment, the upper cross rod reliably opens the opening of the main hook;

step five: the hook is hung on a wire stopping circuit, at the moment, the arc-shaped pressing sheet is reliably pressed on the wire, an operator standing on the ground pulls the lower operating element down through the operating rod, the lower spring is compressed, the lower cross rod of the lower operating element enters the position of C from the clamping groove III of the lower sliding groove downwards, the upper non-cylindrical structure and the lower non-cylindrical structure are not level up and down, the top of the upper moving groove of the lower non-cylindrical structure of the lower operating element is in contact with the upper non-cylindrical structure of the upper operating element, the upper operating element moves downwards along with the downward movement of the lower operating element, the upper spring is compressed, and the upper cross rod of the upper operating element enters the position of A from the clamping groove I of the upper sliding groove downwards;

step six: driving the lower operating element to rotate the lower operating element by 90 degrees counterclockwise by using the operating rod, rotating the upper operating element by 90 degrees together with the lower operating element, leading the lower cross rod of the lower operating element to enter a D point position from a C point position of the lower chute clockwise and leftwards, leading the upper cross rod of the upper operating element to enter a B point position from an A point position of the upper chute clockwise and leftwards, leading an upper non-cylindrical structure of the upper operating element to be not flush with a lower non-cylindrical structure of the lower operating element from top to bottom, compressing the upper spring, compressing the lower spring, and leading the upper cross rod to seal the opening of the main hook;

step seven: and the upper spring restores a natural extension state, the upper cross rod of the upper operating element is pushed into the upper chute clamping groove II and is reliably locked, the lower operating element on the one hand upwards enters the clamping groove IV of the upper chute through the upper non-cylindrical structure and the lower non-cylindrical structure, on the other hand, the lower spring restores a natural extension state, the lower cross rod of the lower operating element is also pushed into the clamping groove IV of the lower chute and is reliably locked, the upper cross rod reliably seals the opening of the main hook at the moment, and the lower cross rod is locked in the clamping groove IV because the upper cross rod is locked in the clamping groove II at the moment, so the operating rod can be rotated from the lower operating element at the moment.

Before the hook is installed and used, the arc-shaped pressing sheet of the main hook is in a closed state, the upper cross rod reliably seals the opening of the main hook, the upper spring is in a natural extension state, the upper cross rod of the upper operating element is reliably locked in the clamping groove II of the upper sliding groove under the action of the upper spring, the lower spring is in a natural extension state, the lower cross rod of the lower operating element is reliably locked in the clamping groove IV of the lower sliding groove under the action of the lower spring, and the upper non-cylindrical structure of the upper operating element is flush with the lower non-cylindrical structure of the lower operating element; when the hook needs to be installed and used, the lower operating element is pulled downwards, the lower spring is compressed, the lower cross rod of the lower operating element enters a D point position downwards from the clamping groove IV of the lower chute, and the upper non-cylindrical structure of the upper operating element and the lower non-cylindrical structure of the lower operating element are not level up and down; the top of the movable groove on the lower non-cylindrical structure of the lower operating element is contacted with the upper non-cylindrical structure of the upper operating element, so that the upper operating element moves downwards along with the downward movement of the lower operating element; the upper spring is compressed, and an upper cross rod of the upper operating element enters a B point position from the inside of the clamping groove II of the upper chute downwards; rotating the lower operating element 90 degrees clockwise, the upper operating element rotating 90 degrees with the lower operating element, the lower cross bar of the lower operating element entering the C point position clockwise and leftward from the D point position of the lower chute, the upper cross bar of the upper operating element entering the a point position clockwise and leftward from the B point position of the upper chute; the upper non-cylindrical structure of the upper operating element is not level with the lower non-cylindrical structure of the lower operating element; the upper spring is compressed and the lower spring is compressed; the upper cross rod opens the opening of the main hook; the force applied to the lower operating element is removed, the upper spring restores to a natural extension state, and the upper cross rod of the upper operating element is pushed into the upper chute clamping groove I and is reliably locked; the lower operating element enters the clamping groove III of the upper sliding groove upwards through the upper non-cylindrical structure and the lower non-cylindrical structure on one hand, and on the other hand, the lower spring restores to a natural extension state, and the lower cross rod of the lower operating element is also pushed into the clamping groove III of the lower sliding groove and is reliably locked; at the moment, the upper cross rod reliably opens the opening of the main hook; the hook is hung on a wire stopping circuit, and the arc-shaped pressing sheet is reliably pressed on the wire at the moment; an operator standing on the ground pulls the lower operating element down through the operating rod, the lower spring is compressed, the lower cross rod of the lower operating element enters the position of C from the inside of the clamping groove III of the lower chute downwards, and the upper non-cylindrical structure and the lower non-cylindrical structure are not level up and down; the top of the movable groove on the lower non-cylindrical structure of the lower operating element is contacted with the upper non-cylindrical structure of the upper operating element, so that the upper operating element moves downwards along with the downward movement of the lower operating element; the upper spring is compressed, and an upper cross rod of the upper operating element enters the position A from the inside of the clamping groove I of the upper chute downwards; the lower operating element is driven by the operating rod to rotate the lower operating element by 90 degrees anticlockwise, the upper operating element rotates by 90 degrees together with the lower operating element, the lower cross rod of the lower operating element enters a D point position from a C point position of the lower chute clockwise leftwards, and the upper cross rod of the upper operating element enters a B point position from an A point position of the upper chute clockwise leftwards; the upper non-cylindrical structure of the upper operating element is not level with the lower non-cylindrical structure of the lower operating element; the upper spring is compressed and the lower spring is compressed; the upper cross rod seals the opening of the main hook; the force applied to the lower operating element by the operating rod is removed, the upper spring restores to a natural extension state, and the upper cross rod of the upper operating element is pushed into the upper chute clamping groove II and is reliably locked; the lower operating element enters the clamping groove IV of the upper sliding groove upwards through the upper non-cylindrical structure and the lower non-cylindrical structure on one hand, and on the other hand, the lower spring restores to a natural extension state, and the lower cross rod of the lower operating element is also pushed into the clamping groove IV of the lower sliding groove and is reliably locked; at the moment, the upper cross rod reliably seals the opening of the main hook; since the upper cross bar is now locked in the second pocket and the lower cross bar is now locked in the fourth pocket, the operating lever can now be rotated away from the lower operating element and the hook removed from the live conductor in a similar manner to that described above.

The invention has the following beneficial effects: the device can reliably realize opening sealing after being hung, so that the hook can be firmly and reliably hung on a power-off wire or maintenance equipment and cannot fall off in unexpected conditions, the safety of power-off maintenance operation of the equipment or line is directly improved, and the life and property safety of maintenance personnel is guaranteed; simple structure, reliability, convenient operation and use, convenient storage and convenient maintenance.

Drawings

FIG. 1 is a structural isometric view of one embodiment of the present invention;

FIG. 2 is a top view of a structure according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of an operating mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic view of the structure of the upper chute according to an embodiment of the present invention;

FIG. 5 is a schematic view of a lower chute according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of an upper support ring and a lower support ring according to an embodiment of the present invention;

FIG. 7 is a schematic view of a support ring and a chute according to an embodiment of the present invention;

FIG. 8 is a schematic view of a support ring, a chute and a spring according to an embodiment of the present invention;

FIG. 9 is a schematic view of a support ring and a hollow cylinder according to an embodiment of the present invention;

FIG. 10 is a schematic view of the support ring, runner, spring and operating element of an embodiment of the present invention;

FIG. 11 is a schematic diagram of the structure of the operating components of one embodiment of the present invention;

FIG. 12 is a schematic diagram of an operating device according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of the structure of the upper and lower operating element combinations in accordance with one embodiment of the present invention;

FIG. 14 is a schematic view of the operating element and spring combination according to one embodiment of the present invention;

FIG. 15-1, FIG. 15-2, FIG. 15-3 and FIG. 15-4 are schematic views of the operation of step one in the present invention;

FIG. 16-1, FIG. 16-2, FIG. 16-3 and FIG. 16-4 are schematic diagrams of the operation of step two in the present invention;

FIG. 17-1, FIG. 17-2, FIG. 17-3 and FIG. 17-4 are schematic diagrams of the operation of step three in the present invention;

FIG. 18-1, FIG. 18-2, FIG. 18-3 and FIG. 18-4 are schematic views of the operation of step four in the present invention;

FIG. 19-1, FIG. 19-2, FIG. 19-3 and FIG. 19-4 are schematic views of the operation of step five in the present invention;

FIG. 20-1, FIG. 20-2, FIG. 20-3 and FIG. 20-4 are schematic diagrams of the operation of step six in the present invention;

FIG. 21-1, FIG. 21-2, FIG. 21-3 and FIG. 21-4 are schematic views of the operation of step seven in the present invention.

Description of the reference numerals:

1-arc-shaped pressing sheet, 2-torsion spring, 3-main hook, 4-fixed shaft, 5-upper cross bar, 6-main hook notch, 7-upper chute, 8-ground wire fixing plate, 9-fixing bolt, 10-operating mechanism, 11-ground wire, 12-upper spring, 13-lower cross bar, 14-lower chute, 15-lower spring, 16-operating rod clamping point, 17-conductive copper braid, 18-operating rod clamping groove, 19-operating rod, 20-clamping groove I, 21-A point position, 22-clamping groove II, 23-B point position, 24-clamping groove III, 25-C point position, 26-clamping groove IV, 27-D point position, 28-hollow cylindrical structure, 29-circular opening, 30-upper supporting ring, 31-lower support ring, 32-upper disc, 33-upper operating element, 34-upper non-cylindrical structure, 35-fixing rivet, 36-lower disc, 37-lower operating element, 38-lower non-cylindrical structure, 39-moving slot.

Detailed Description

The following description of the embodiments of the present invention refers to the accompanying drawings and examples:

fig. 1 to 7 show a specific embodiment of the invention, and an anti-falling hook device for a ground wire with a rotary cross rod seal comprises an arc-shaped pressing sheet 1, a torsion spring 2, a main hook 3, a fixed shaft 4, an upper cross rod 5, a ground wire fixing plate 8, a fixing bolt 9, an operating mechanism 10, a ground wire 11 and a conductive flat copper braid 17, wherein the arc-shaped pressing sheet 1 is installed on the inner side of the main hook 3, the arc-shaped pressing sheets 1 are respectively arranged on the left and right sides of the arc-shaped pressing sheet 1, the bottom of the arc-shaped pressing sheet 1 is fixedly connected to the main hook 3 through the fixed shaft 4 and can rotate around the fixed shaft 4, the shape of the arc-shaped pressing sheet 1 is fit with a lead, the arc-shaped pressing sheet 1 can be tightly pressed on the lead under the action of the torsion spring 2, one end of the torsion spring 2 is connected with the fixed shaft 4, the other end of the torsion spring 2 is pressed on the arc-shaped pressing sheet 1, the main hook 3 is provided with a main hook gap 6, and the right end of the upper cross rod 5 is installed on the main hook gap 6 on the main hook 3, the lower end of the main hook 3 is fixedly arranged on the top surface of an operating mechanism 10, the ground wire fixing plate 8 is arranged on the left side surface of the operating mechanism 10 through a fixing bolt 9, the grounding wire 11 is fixedly arranged on the grounding wire fixing plate 8, the operating mechanism 10 comprises an outer shell and internal components, the outer shell is of a cuboid structure when viewed from the outside, the place where the external shell is combined with the main hook 3 is a three-dimensional trapezoidal connecting structure, the interior of the external shell is a hollow cylindrical structure 28, the bottom of the hollow cylindrical structure 28 is a circular hole, the top of the outer shell combined with the three-dimensional trapezoid is a closed structure, the side edge of the outer shell is provided with two sliding grooves which are an upper sliding groove and a lower sliding groove respectively, the inner side of the outer casing has two support rings which are an upper support ring 30 and a lower support ring 31, and two ends of the conductive flat copper braid 17 are respectively and fixedly connected to the arc-shaped pressing sheet 1 and the main hook 3.

Preferably, the components inside the operating mechanism 10 are an upper spring 12, a lower spring 15, an upper operating component 33, a lower operating component 37, a lower cross bar 13, an upper support ring 30, a lower support ring 31, an upper disk 32 and a lower disk 36, the upper operating component 33 is mounted on the lower operating component 37 through a fixing rivet 35, the upper disk 32 is fixedly mounted on the upper operating component 33, the lower disk 36 is fixedly mounted on the lower operating component 37, the lower cross bar 13 is fixedly mounted on the lower operating component 37, the upper spring 12 is sleeved on the upper operating component 33, the lower spring 15 is sleeved on the lower operating component 37, and the upper cross bar 5 is mounted on the upper operating component 33.

Preferably, the upper chute 7 is provided with a chute track and two clamping grooves, the two clamping grooves are respectively a clamping groove i 20 and a clamping groove ii 22, the height of the chute track is equal to the height of the clamping groove, the chute track positions at the lower parts of the clamping grooves i 20 and ii 22 are respectively named as a position 21 at an a point and a position 23 at a B point, and an included angle between virtual extension lines of the clamping grooves i 20 and ii 22 to the hollow cylindrical structure 28 is 90 degrees; the width and the height of the clamping groove are equal, the connecting line of the clamping groove II 22 and the circle center of the hollow cylindrical structure 28 is parallel to the plane leftwards, and the positions 23 of the upper sliding groove clamping groove II 22 and the position B are at the same height with the notch 6 of the main hook.

Preferably, the lower chute 14 is provided with a chute track and two clamping grooves, the two clamping grooves are respectively a clamping groove iii 24 and a clamping groove iv 26, the height of the chute track is equal to the height of the clamping groove, the chute track positions at the lower parts of the clamping groove iii 24 and the clamping groove iv 26 are respectively named as a position 25 of a C point and a position 27 of a D point, an included angle between a virtual extension line of the clamping groove iii 24 and the clamping groove iv 26 to the hollow cylindrical structure 28 is 90 °, the width and the height of the clamping groove are equal, a connecting line of the clamping groove iv 26 and the center of the hollow cylindrical structure 28 is parallel to the plane and faces the left, and the height between the lower chute 14 and the upper chute 7 is equal.

Preferably, the upper operating element 33 comprises a cylindrical main body, an upper cross bar 5, an upper disc 32 and an upper non-cylindrical structure 34, the cylindrical main body, the upper cross bar 5, the upper disc 32 and the upper non-cylindrical structure 34 are fixedly connected, the height of the upper operating element 33 is equal to the sum of the cylindrical main body and the upper non-cylindrical structure 34, the top of the cylindrical main body is flush with the top of the upper cross bar 5, the cross section of the upper cross bar 5 is square and the size of the upper cross bar is smaller than that of the clamping grooves I20 and II 22 on the upper sliding chute 7, the length of the upper cross bar 5 is equal to the width of the main hook 3, the upper cross bar 5 is oriented in a direction parallel to the plane of the upper non-cylindrical structure 34, the diameter of the upper disc 32 is larger than that of the cylindrical main body of the upper operating element 33, and the cross section of the upper non-cylindrical structure 34 is one third of a circle.

Preferably, the lower operating element 37 comprises a cylindrical main body, a lower disc 36, a lower non-cylindrical structure 38 and a lower cross bar 13, the cylindrical main body, the lower disc 36, the lower non-cylindrical structure 38 and the lower cross bar 13 are fixedly connected, the top of the lower cross bar 13 is flush with the top of the lower non-cylindrical structure 38, the cross section of the lower cross bar 13 is square and the size of the cross section of the lower cross bar is smaller than the clamping groove III 24 and the clamping groove IV 26 of the lower chute 14, and the direction of the lower cross bar 13 is parallel to the plane of the lower non-cylindrical structure 38; the diameter of the lower disc 36 is greater than that of the cylindrical body of the lower operating element 37, the diameter of the lower disc 36 is equal to the outer diameter of the lower spring 15, the section of the lower non-cylindrical structure 38 is a third of a circle, and the plane of the lower non-cylindrical structure which is attached to the upper non-cylindrical structure 34 is parallel to the lower cross bar 13; the cylindrical body diameter of the lower operating element 37 is equal to the cylindrical body diameter of the upper operating element 33.

Preferably, the heights of the tracks of the first clamping groove 20, the second clamping groove 22 and the upper sliding groove 7 of the upper sliding groove 7 are all equal, and the heights of the tracks of the third clamping groove 24, the fourth clamping groove 26 and the lower sliding groove 14 of the lower sliding groove 14 are all equal.

Preferably, the top of the upper non-cylindrical structure 34 of the upper operating element 33 is equal to the top of the lower non-cylindrical structure 38 of the lower operating element 37, and the bottom of the upper non-cylindrical structure 34 of the upper operating element 33 is equal to the bottom of the lower non-cylindrical structure 38 of the lower operating element 37.

Preferably, the distance between the upper cross bar 5 and the lower cross bar 13 is equal to the distance between the lower chute 14 and the upper chute 7.

Preferably, the free end of the main hook 3 is provided with a main hook notch 6, and the opening direction of the main hook notch 6 is perpendicular to the plane formed by the free end of the main hook 3 and the connecting end of the grounding wire 11.

An operation method of a ground wire anti-falling hook device with a rotary cross rod seal comprises the following steps:

the method comprises the following steps: before the hook is installed and used, the arc-shaped pressing sheet 1 of the main hook 3 is in a closed state, the upper cross rod 5 reliably closes the opening of the main hook 3, the upper spring 12 is in a natural extension state, the upper cross rod 5 of the upper operating element 33 is reliably locked in the clamping groove II 22 of the upper sliding groove 7 under the action of the upper spring 12, the lower spring 15 is in a natural extension state, the lower cross rod 13 of the lower operating element 37 is reliably locked in the clamping groove IV 26 of the lower sliding groove 14 under the action of the lower spring 15, and the upper non-cylindrical structure 34 of the upper operating element 33 is flush with the lower non-cylindrical structure 38 of the lower operating element 37;

step two: when the hook needs to be installed for use, the lower operating element 37 is pulled downwards, the lower spring 15 is compressed, the lower cross rod 13 of the lower operating element 37 enters the D point position 27 downwards from the clamping groove IV 26 of the lower chute 14, the upper non-cylindrical structure 34 of the upper operating element 33 is not level with the lower non-cylindrical structure 38 of the lower operating element 37 up and down, the top of the movable groove on the lower non-cylindrical structure 38 of the lower operating element 37 is in contact with the upper non-cylindrical structure 34 of the upper operating element 33, the upper operating element 33 moves downwards along with the downward movement of the lower operating element 37, the upper spring 12 is compressed, and the upper cross rod 5 of the upper operating element 33 enters the B point position 23 downwards from the clamping groove II 22 of the upper chute 7;

step three: rotating the lower operating member 37 ninety degrees clockwise, the upper operating member 33 rotating 90 degrees with the lower operating member 37, the lower cross bar 13 of the lower operating member 37 entering the C point position 25 clockwise and leftward from the D point position 27 of the lower chute 14, the upper cross bar 5 of the upper operating member 33 entering the a point position 21 clockwise and leftward from the B point position 23 of the upper chute 7, the upper non-cylindrical structure 34 of the upper operating member 33 being out of upper and lower alignment with the lower non-cylindrical structure 38 of the lower operating member 37, the upper spring 12 being compressed, the lower spring 15 being compressed, the upper cross bar 5 opening the primary hook opening 6;

step four: the force applied to the lower operating element 37 is removed, the upper spring 12 returns to the natural extension state, the upper cross bar 5 of the upper operating element 33 is pushed into the slot i 20 of the upper chute 7 and is locked reliably, the lower operating element 37 on the one hand goes up into the slot iii 24 of the upper chute 7 through the upper non-cylindrical structure 34 and the lower non-cylindrical structure 38, and on the other hand, the lower spring 15 returns to the natural extension state, and the lower cross bar 13 of the lower operating element 37 is also pushed into the slot iii 24 of the lower chute 14 and is locked reliably, at this time, the upper cross bar 5 reliably opens the main hook opening 6;

step five: hanging the hook on a wire stopping way, wherein the arc-shaped pressing sheet 1 is firmly pressed on the wire, an operator standing on the ground pulls the lower operating element 37 downwards through the operating rod, the lower spring 15 is compressed, the lower cross rod 13 of the lower operating element 37 downwards enters the position 25 at the C point from the clamping groove III 24 of the lower chute 14, the upper non-cylindrical structure 34 is not level with the lower non-cylindrical structure 38 up and down, the top of the movable groove on the lower non-cylindrical structure 38 of the lower operating element 37 is contacted with the upper non-cylindrical structure 34 of the upper operating element 33, so that the upper operating element 33 moves downwards along with the downward movement of the lower operating element 37, the upper spring 12 is compressed, and the upper cross rod 5 of the upper operating element 33 downwards enters the position 21 at the position at the A point from the clamping groove I20 of the upper chute 7;

step six: rotating the lower operating member 37 ninety degrees counterclockwise with the operating lever, rotating the upper operating member 33 90 degrees with the lower operating member 37, the lower cross bar 13 of the lower operating member 37 clockwise and leftward from the C point position 25 of the lower chute 14 into the D point position 27, the upper cross bar 5 of the upper operating member 33 clockwise and leftward from the a point position 21 of the upper chute 7 into the B point position 23, the upper non-cylindrical structure 34 of the upper operating member 33 is not vertically flush with the lower non-cylindrical structure 38 of the lower operating member 37, the upper spring 12 is compressed, the lower spring 15 is compressed, and the upper cross bar 5 closes the main hook opening 6;

step seven: the force exerted by the operating lever on the lower operating element 37 is removed, the upper spring 12 returns to its natural extended position, the upper crossbar 5 of the upper operating element 33 is pushed into the latching groove ii 22 of the upper chute 7 and is securely locked, the lower operating element 37 on the one hand is pushed up into the latching groove iv 26 of the upper chute 7 by means of the upper non-cylindrical structure 34 and the lower non-cylindrical structure 38, and on the other hand, the lower spring 15 returns to its natural extended position, and the lower crossbar 13 of the lower operating element 37 is also pushed into the latching groove iv 26 of the lower chute 14 and is securely locked, the upper crossbar 5 now securely closing the main hook opening 6, since the upper crossbar 5 is now locked in the latching groove ii 22 and the lower crossbar 13 is locked in the latching groove iv 26, so that the operating lever can now be rotated off the lower operating element 37.

Before the hook is installed and used, the arc-shaped pressing sheet 1 of the main hook 3 is in a closed state, the upper cross rod 5 reliably closes the opening 6 of the main hook, the upper spring 12 is in a natural extension state, the upper cross rod 5 of the upper operating element 33 is reliably locked in the clamping groove II 22 of the upper sliding groove 7 under the action of the upper spring 12, the lower spring 15 is in a natural extension state, the lower cross rod 13 of the lower operating element 37 is reliably locked in the clamping groove IV 26 of the lower sliding groove 14 under the action of the lower spring 15, and the upper non-cylindrical structure 34 of the upper operating element 33 is flush with the lower non-cylindrical structure 38 of the lower operating element 37; when the hook needs to be installed for use, the lower operating element 37 is pulled downwards, the lower spring 15 is compressed, the lower cross rod 13 of the lower operating element 37 goes downwards from the clamping groove IV 26 of the lower chute 14 to the D point position 27, and the upper non-cylindrical structure 34 of the upper operating element 33 is not level with the lower non-cylindrical structure 38 of the lower operating element 37; the upper movable slot top of the lower non-cylindrical structure 38 of the lower operating element 37 is in contact with the upper non-cylindrical structure 34 of the upper operating element 33, causing the upper operating element 33 to move downwardly in conjunction with the downward movement of the lower operating element 37; the upper spring 12 is compressed, and the upper cross rod 5 of the upper operating element 33 enters the B point position 23 from the clamping groove II 22 of the upper chute 7 downwards; rotating the lower operating member 37 ninety degrees clockwise, the upper operating member 33 rotating 90 degrees with the lower operating member 37, the lower cross bar 13 of the lower operating member 37 entering the C point position 25 clockwise and leftward from the D point position 27 of the lower chute 14, the upper cross bar 5 of the upper operating member 33 entering the a point position 21 clockwise and leftward from the B point position 23 of the upper chute 7; the upper non-cylindrical structure 34 of the upper operating element 33 is not level with the lower non-cylindrical structure 38 of the lower operating element 37; the upper spring 12 is compressed and the lower spring 15 is compressed; the upper cross bar 5 opens the main hook opening 6; the force applied on the lower operating element 37 is removed, the upper spring 12 restores the natural extension state, the upper cross rod 5 of the upper operating element 33 is pushed into the clamping groove I20 of the upper chute 7 and is locked reliably; the lower operating element 37 on the one hand enters the locking groove iii 24 of the upper sliding groove 7 through the upper non-cylindrical structure 34 and the lower non-cylindrical structure 38, and on the other hand, the lower spring 15 returns to the natural extension state, and also pushes the lower cross rod 13 of the lower operating element 37 into the locking groove iii 24 of the lower sliding groove 14, and is locked reliably; at the moment, the upper cross rod 5 can reliably open the opening 6 of the main hook; the hook is hung on a wire stopping circuit, and the arc pressing sheet 1 is reliably pressed on the wire; an operator standing on the ground pulls the lower operating element 37 downwards through the operating rod, the lower spring 15 is compressed, the lower cross rod 13 of the lower operating element 37 downwards enters the C point position 25 from the clamping groove III 24 of the lower chute 14, and the upper non-cylindrical structure 34 is not level with the lower non-cylindrical structure 38; the upper movable slot top of the lower non-cylindrical structure 38 of the lower operating element 37 is in contact with the upper non-cylindrical structure 34 of the upper operating element 33, causing the upper operating element 33 to move downwardly in conjunction with the downward movement of the lower operating element 37; the upper spring 12 is compressed, and the upper cross rod 5 of the upper operating element 33 enters the A point position 21 from the clamping groove I20 of the upper chute 7 downwards; rotating the lower operating member 37 ninety degrees counterclockwise with the operating lever, rotating the upper operating member 33 90 degrees with the lower operating member 37, the lower cross bar 13 of the lower operating member 37 entering the D position 27 clockwise and leftward from the C position 25 of the lower chute 14, and the upper cross bar 5 of the upper operating member 33 entering the B position 23 clockwise and leftward from the a position 21 of the upper chute 7; the upper non-cylindrical structure 34 of the upper operating element 33 is not level with the lower non-cylindrical structure 38 of the lower operating element 37; the upper spring 12 is compressed, the lower spring 15 is compressed; the upper cross bar 5 closes the main hook opening 6; the force applied to the lower operating element 37 by the operating rod is removed, the upper spring 12 restores the natural extension state, the upper cross rod 5 of the upper operating element 33 is pushed into the clamping groove II 22 of the upper chute 7 and is reliably locked; the lower operating element 37, on the one hand, moves up into the latching recess iv 26 of the upper sliding groove 7 via the upper non-cylindrical structure 34 and the lower non-cylindrical structure 38, and on the other hand, the lower spring 15 returns to its natural extended state, so that the lower cross bar 13 of the lower operating element 37 is also pushed into the latching recess iv 26 of the lower sliding groove 14 and is reliably locked; at the moment, the upper cross rod 5 can reliably close the opening 6 of the main hook; since the upper cross bar 5 is now latched in the second latch channel 22 and the lower cross bar 13 is latched in the fourth latch channel iv 26, the lever is now rotated away from the lower operating element 37 and the hook is removed from the live conductor in a similar manner to that described above.

Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying 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.

Many other changes and modifications can 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 (10)

1. The utility model provides a take earth connection anti-drop couple device that rotatory horizontal pole sealed which characterized in that: comprises an arc-shaped pressing sheet, a torsion spring, a main hook, a fixed shaft, an upper cross bar, a ground wire fixing plate, a fixing bolt, an operating mechanism, a ground wire and a conductive flat copper braid, wherein the arc-shaped pressing sheet is arranged on the inner side of the main hook, the left side and the right side of the arc-shaped pressing sheet are respectively and fixedly connected to the main hook through the fixed shaft, the bottom of the arc-shaped pressing sheet can rotate around the fixed shaft, the appearance of the arc-shaped pressing sheet is matched with a lead, the arc-shaped pressing sheet can be tightly pressed on the lead under the action of the torsion spring, one end of the torsion spring is connected with the fixed shaft, the other end of the torsion spring is pressed on the arc-shaped pressing sheet, the main hook is provided with a main hook notch, the right end of the upper cross bar is arranged on the main hook notch, the lower end of the main hook is fixedly arranged on the top surface of the operating mechanism, the ground wire fixing plate is arranged on the left side surface of the operating mechanism through the fixing bolt, the utility model discloses a lead frame, including the ground connection, operating device, outside casing and main couple, ground connection fixed mounting is on the ground connection fixed plate, operating device includes that outside casing and inside each component and outside casing see the main part from the outside for the cuboid structure, the place that outside casing and main couple combine is three-dimensional trapezoidal linking structure, the inside cavity cylinder structure and the cavity cylinder structure bottom of being of outside casing are circular trompil, outside casing is enclosed construction with the top that three-dimensional trapezoidal combination, outside casing side has two spouts and two spouts to be spout and lower chute respectively, outside casing inboard has two support rings and two support rings to be last support ring and under bracing ring respectively, electrically conductive band copper pigtail both ends are fixed connection respectively on arc preforming and main couple.

2. The ground wire anti-falling hook device with the rotary cross rod seal as claimed in claim 1, characterized in that: the operating mechanism comprises an upper spring, a lower spring, an upper operating element, a lower cross rod, an upper supporting ring, a lower supporting ring, an upper disc and a lower disc, wherein the upper operating element is arranged on the lower operating element through a fixing rivet, the upper disc is fixedly arranged on the upper operating element, the lower disc is fixedly arranged on the lower operating element, the lower cross rod is fixedly arranged on the lower operating element, the upper spring is sleeved on the upper operating element, the lower spring is sleeved on the lower operating element, and the upper cross rod is arranged on the upper operating element.

3. The ground wire anti-drop hook device with the rotary cross rod seal as claimed in claim 1, characterized in that: the upper chute is provided with a chute track and two clamping grooves, the two clamping grooves are respectively a clamping groove I and a clamping groove II, the height of the chute track is equal to that of the clamping groove, the chute track positions at the lower parts of the clamping groove I and the clamping groove II are named as an A point position and a B point position respectively, and an included angle between the clamping groove I and the clamping groove II and a virtual extension line of the hollow cylindrical structure is 90 degrees; the width and the height of the clamping groove are equal, the connecting line of the clamping groove II and the circle center of the hollow cylindrical structure is parallel to the plane leftwards, and the positions of the upper sliding groove clamping groove II and the upper sliding groove clamping groove B are at the same height as the notch of the main hook.

4. The ground wire anti-falling hook device with the rotary cross rod seal as claimed in claim 1, characterized in that: the lower sliding groove is provided with a sliding groove track and two clamping grooves, the two clamping grooves are respectively a clamping groove III and a clamping groove IV, the height of the sliding groove track is equal to the height of the clamping grooves, the sliding groove track positions at the lower parts of the clamping grooves III and IV are named as a C point position and a D point position respectively, the included angle between the clamping grooves III and IV and the virtual extension line of the hollow cylindrical structure is 90 degrees, the width and the height of the clamping grooves are equal, the connecting line of the clamping grooves IV and the center of the hollow cylindrical structure is parallel to the plane leftwards, and the height between the lower sliding groove and the upper sliding groove is equal.

5. The ground wire anti-falling hook device with the rotary cross rod seal as claimed in claim 2, characterized in that: the upper operating element comprises a cylindrical main body, an upper cross rod, an upper disc and an upper non-cylindrical structure, the cylindrical main body, the upper cross rod, the upper disc and the upper non-cylindrical structure are fixedly connected, the height of the upper operating element is equal to the sum of the cylindrical main body and the upper non-cylindrical structure, the top of the cylindrical main body is flush with the top of the upper cross rod, the cross section of the upper cross rod is square, the size of the upper cross rod is smaller than that of a clamping groove I and a clamping groove II in the upper sliding groove, the length of the upper cross rod is equal to that of a main hook, the direction of the upper cross rod is parallel to the plane of the upper non-cylindrical structure, the diameter of the upper disc is larger than that of the cylindrical main body of the upper operating element, and the cross section of the upper non-cylindrical structure is one-third of a circle.

6. The ground wire anti-falling hook device with the rotary cross rod seal as claimed in claim 2, characterized in that: the lower operating element comprises a cylindrical main body, a lower disc, a lower non-cylindrical structure and a lower cross bar, the cylindrical main body, the lower disc, the lower non-cylindrical structure and the lower cross bar are fixedly connected, the top of the lower cross bar is flush with the top of the lower non-cylindrical structure, the cross section of the lower cross bar is square, the size of the cross section of the lower cross bar is smaller than that of a clamping groove III and a clamping groove IV of a lower sliding groove, and the direction of the lower cross bar is parallel to the plane of the lower non-cylindrical structure; the diameter of the lower disc is larger than that of the cylindrical main body of the lower operating element, the diameter of the lower disc is equal to the outer diameter of the lower spring, the section of the lower non-cylindrical structure is a third of two circles, and the plane of the lower non-cylindrical structure, which is attached to the upper non-cylindrical structure, is parallel to the lower cross rod; the cylindrical body diameter of the lower operating element and the cylindrical body diameter of the upper operating element are equal.

7. The ground wire anti-drop hook device with the rotary cross rod seal as claimed in claim 1, characterized in that: the height of the tracks of the clamping groove I, the clamping groove II and the upper sliding groove of the upper sliding groove is equal, and the height of the tracks of the clamping groove III, the clamping groove IV and the lower sliding groove of the lower sliding groove is equal.

8. The ground wire anti-falling hook device with the rotary cross rod seal as claimed in claim 2, characterized in that: the top of the upper non-cylindrical structure of the upper operating element and the top of the lower non-cylindrical structure of the lower operating element are equal in height, and the bottom of the upper non-cylindrical structure of the upper operating element and the bottom of the lower non-cylindrical structure of the lower operating element are equal in height.

9. The ground wire anti-falling hook device with the rotary cross rod seal as claimed in claim 1, characterized in that: the distance between the upper cross rod and the lower cross rod is equal to the distance between the lower sliding chute and the upper sliding chute;

the main couple free end is equipped with the main couple breach and main couple breach opening direction perpendicular to the plane that the free end of main couple and earth connection link formed outwards.

10. The operation method of the ground wire anti-drop hook device with the rotary cross rod seal as claimed in any one of claims 1 to 10, characterized in that: the method comprises the following steps:

the method comprises the following steps: before the hook is installed and used, the arc-shaped pressing sheet of the main hook is in a closed state, the upper cross rod reliably seals the opening of the main hook, the upper spring is in a natural extension state, the upper cross rod of the upper operating element is reliably locked in the clamping groove II of the upper chute under the action of the upper spring, the lower spring is in a natural extension state, the lower cross rod of the lower operating element is reliably locked in the clamping groove IV of the lower chute under the action of the lower spring, and the upper non-cylindrical structure of the upper operating element is flush with the lower non-cylindrical structure of the lower operating element;

step two: when the hook needs to be installed and used, the lower operating element is pulled downwards, the lower spring is compressed, the lower cross rod of the lower operating element enters a D point position downwards from the clamping groove IV of the lower sliding groove, the upper non-cylindrical structure of the upper operating element is not flush with the lower non-cylindrical structure of the lower operating element, the top of the movable groove on the lower non-cylindrical structure of the lower operating element is contacted with the upper non-cylindrical structure of the upper operating element, the upper operating element moves downwards along with the downward movement of the lower operating element, the upper spring is compressed, and the upper cross rod of the upper operating element enters a B point position downwards from the clamping groove II of the upper sliding groove;

step three: rotating the lower operating element 90 degrees clockwise, the upper operating element rotating 90 degrees with the lower operating element, the lower cross bar of the lower operating element entering the C point position clockwise and leftward from the D point position of the lower chute, the upper cross bar of the upper operating element entering the a point position clockwise and leftward from the B point position of the upper chute, the upper non-cylindrical structure of the upper operating element and the lower non-cylindrical structure of the lower operating element being not level up and down, the upper spring being compressed, the lower spring being compressed, the upper cross bar opening the main hook opening;

step four: the force applied to the lower operating element is removed, the upper spring restores to a natural extension state, the upper cross rod of the upper operating element is pushed into the upper chute clamping groove I and is reliably locked, the lower operating element on the one hand enters the upper chute clamping groove III upwards through the upper non-cylindrical structure and the lower non-cylindrical structure, on the other hand, the lower spring restores to a natural extension state, the lower cross rod of the lower operating element is also pushed into the lower chute clamping groove III and is reliably locked, and at the moment, the upper cross rod reliably opens the opening of the main hook;

step five: the hook is hung on a wire stopping circuit, at the moment, the arc-shaped pressing sheet is reliably pressed on the wire, an operator standing on the ground pulls the lower operating element down through the operating rod, the lower spring is compressed, the lower cross rod of the lower operating element enters the position of C from the clamping groove III of the lower sliding groove downwards, the upper non-cylindrical structure and the lower non-cylindrical structure are not level up and down, the top of the upper moving groove of the lower non-cylindrical structure of the lower operating element is in contact with the upper non-cylindrical structure of the upper operating element, the upper operating element moves downwards along with the downward movement of the lower operating element, the upper spring is compressed, and the upper cross rod of the upper operating element enters the position of A from the clamping groove I of the upper sliding groove downwards;

step six: driving the lower operating element to rotate the lower operating element by 90 degrees counterclockwise by using the operating rod, rotating the upper operating element by 90 degrees together with the lower operating element, leading the lower cross rod of the lower operating element to enter a D point position from a C point position of the lower chute clockwise and leftwards, leading the upper cross rod of the upper operating element to enter a B point position from an A point position of the upper chute clockwise and leftwards, leading an upper non-cylindrical structure of the upper operating element to be not flush with a lower non-cylindrical structure of the lower operating element from top to bottom, compressing the upper spring, compressing the lower spring, and leading the upper cross rod to seal the opening of the main hook;

step seven: and the upper spring restores a natural extension state, the upper cross rod of the upper operating element is pushed into the upper chute clamping groove II and is reliably locked, the lower operating element on the one hand upwards enters the clamping groove IV of the upper chute through the upper non-cylindrical structure and the lower non-cylindrical structure, on the other hand, the lower spring restores a natural extension state, the lower cross rod of the lower operating element is also pushed into the clamping groove IV of the lower chute and is reliably locked, the upper cross rod reliably seals the opening of the main hook at the moment, and the lower cross rod is locked in the clamping groove IV because the upper cross rod is locked in the clamping groove II at the moment, so the operating rod can be rotated from the lower operating element at the moment.

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