CN104201491B - For the limited grip equipotential folder of ultra high voltage helicopter live line working - Google Patents

Abstract

The invention discloses an equipotential clamp with limited grip force for extra-high voltage helicopter live work, which comprises a Y-shaped seat. The bottom of the fork of the Y-shaped seat is provided with a downward installation groove, and both sides of the installation groove are respectively provided with slide grooves. In the installation groove, a tab is installed slidingly through the chute, and the bottom of the tab is provided with a first lifting mechanism that can move up and down and lift the tab; the two sides of the bottom of the fork of the Y-shaped seat are respectively equipped with a seal Chuck, the swing ends of the two sealing chucks are arranged oppositely, the bottom surface of the movable installation end of the sealing chuck is provided with a bayonet, and the position corresponding to the bayonet on the Y-shaped seat is provided to move up and down and cooperate with the bayonet to limit the grip. A second jacking mechanism that prevents the swing end of the sealing chuck from swinging upwards. The present invention can realize the clamping of the high-voltage wire through the cooperation of the tongue and the sealing chuck, and at the same time, the escape of the high-voltage wire can be realized through the cooperation of the bayonet and the second jacking mechanism, and the structure is simple and easy to use. Suitable for high voltage live work.

Description

Limited-grip equipotential clamps for UHV helicopter live work

technical field

The invention relates to an equipotential clamp for live work, in particular to an equipotential clamp with limited grip force for live work of a UHV helicopter.

Background technique

Live work on UHV AC lines is an emerging non-stop operation method with high technological content and complex technical requirements. It generally includes direct equipotential work by personnel and equipotential work by helicopters.

For the direct equipotential operation of personnel, it is only necessary to carry out the equipotential operation when the personnel enter the operation point, and the equipotential connection line can be disconnected after the personnel enter the operation point. In this way, only when the personnel enter the operation point, use a simple Y-shaped The seat connects the equipotential connection line to the high-voltage wire. After the personnel enter the operating point, the Y-shaped seat can be retracted. Therefore, the Y-shaped seat does not need a clamping function.

But for the equipotential operation of the helicopter, the equipotential connection and the high-voltage wire connection must be maintained throughout the operation. In this way, the Y-shaped seat must be required to have a clamping function to prevent it from falling off with limited grip, but at the same time, based on safety considerations, and It is required that when there is an emergency, the Y-shaped seat can automatically break away from the wire without affecting the safe flight of the helicopter, that is, it must have the escape function. And in the actual design, it is easy to realize that the existing Y-shaped seat has the clamping function, but it is really difficult to realize that the existing Y-shaped seat is provided with the escape function.

Contents of the invention

The object of the present invention is to overcome the disadvantages of the above-mentioned background technology, and provide an equipotential clamp with limited grip force for UHV helicopter live working, which has both clamping and escaping functions.

In order to achieve the above purpose, the present invention provides a limited-grip equipotential clamp for UHV helicopter live work, comprising a Y-shaped seat, the bottom of the fork of the Y-shaped seat is provided with a downward installation groove, and the installation Both sides of the slot are provided with chute respectively, and a tab is slidably installed in the installation slot through the chute, and the bottom of the tab is provided with a first lifting mechanism that can move up and down and can lift the tab. Mechanism; the two sides of the bottom of the fork of the Y-shaped seat are respectively equipped with a sealing chuck, the swing ends of the two sealing chucks are arranged oppositely, and the bottom surface of the movable installation end of the sealing chuck is provided with a bayonet, The position corresponding to the bayonet on the Y-shaped seat is provided with a second jacking mechanism that can move up and down and cooperate with the bayonet to prevent the swing end of the sealing chuck from swinging upwards with limited grip force. The clamping of the high-voltage wire can be realized through the cooperation of the tab and the sealing chuck, and at the same time, the escape of the high-voltage wire can be realized through the cooperation of the bayonet and the second jacking mechanism. The structure is simple and easy to use.

In the above solution, the first jacking mechanism includes a first push rod sleeved with a first compression spring, the upper end of the first push rod is connected with the tongue, and the lower end of the first push rod is movably inserted in the in the mounting slot.

In the above solution, a first boss is provided in the installation groove corresponding to the lower end of the first ejector rod, and the lower end of the first ejector rod is movably inserted into the first boss, and the first ejector rod The upper end of the compression spring abuts against the bottom surface of the tongue, and the lower end of the first compression spring abuts against the top surface of the first boss.

In the above solution, the second jacking mechanism includes a second push rod sleeved with a second pressure spring, the upper end of the second push rod is provided with a chamfer matched with the bayonet, and the chamfer snaps Connected in the bayonet socket, the lower end of the second push rod is movably inserted into the Y-shaped seat. The positioning of the sealing chuck can be realized through the cooperation of the bayonet and the bevel to prevent the high-voltage wire from falling off; at the same time, when the tension of the equipotential connection line is greater than the elastic force of the second compression spring, the bevel can be released from the bayonet. So as to realize the escape function.

In the above solution, the second push rod is provided with a second boss, the upper end of the second compression spring is against the bottom surface of the second protrusion, and the lower end of the second compression spring is against the Y-shaped seat. .

In the solution above, the bayonet includes an inclined surface and an arc surface, the inclined surface and the chamfer form an engaging structure, and the arc surface allows the swing end of the sealing chuck to swing downward.

In the above solution, the movable mounting end of the sealing chuck is swingably mounted on the Y-shaped seat through a rotating shaft with a return torsion spring. In this way, when the high-voltage wire is stuck into the sealing chuck, the return torsion spring will drive the sealing chuck to automatically return, and then the two sealing chucks will form a sealing structure again, thereby preventing the high-voltage wire from falling off.

In the above solution, the top surface of the tab is an arc surface matched with the high-voltage wire, so that the high-voltage wire can be better clamped.

In the above solution, the sealing chuck has a curved structure bent downwards, which facilitates the smooth entry of high-voltage wires.

In the above solution, at the initial position, the gap between the swing ends of the two sealing chucks is smaller than the diameter of the high-voltage wire, so as to prevent the high-voltage wire from falling off.

On the one hand, the present invention can realize the clamping of the high-voltage wire through the cooperation of the tab and the sealing chuck, and at the same time, the escape of the high-voltage wire can be realized through the cooperation of the bayonet and the second jacking mechanism, and the structure is simple and easy to use; on the other hand, The positioning of the sealing chuck can be realized through the cooperation of the bayonet and the bevel to prevent the high-voltage wire from falling off; at the same time, when the tension of the equipotential connection line is greater than the elastic force of the second compression spring, the bevel can be released from the bayonet. In this way, the escape function is realized; on the other hand, when the high-voltage wire is stuck into the sealing chuck, the return torsion spring will drive the sealing chuck to return automatically, so that the two sealing chucks form a sealing structure again, thereby preventing the high-voltage wire from falling off.

Compared with the prior art, the present invention fully demonstrates its advantages: simple structure, low cost and convenient use.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the schematic diagram of partial enlarged structure of part A in Fig. 1;

Fig. 3 is a side view structural schematic diagram of Fig. 1;

Fig. 4 is a schematic diagram of the structure of the use state of the present invention;

FIG. 5 is a schematic diagram of the oblique view of FIG. 4 .

In the figure: Y-shaped seat 1, fork 1a, installation groove 2, chute 2a, tongue 3, first jacking mechanism 4, first compression spring 4a, first ejector rod 4b, first boss 4c, sealing Chuck 5, bayonet socket 5a, rotating shaft 5b, second jacking mechanism 6, second pressure spring 6a, second push rod 6b, chamfer 6c, second boss 6d, insulating operating rod 7.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, but these embodiments should not be construed as limiting the present invention.

This embodiment provides a limited-grip equipotential clamp for UHV helicopter live work, including a Y-shaped seat 1, the bottom of the fork 1a of the Y-shaped seat 1 is provided with a downward installation groove 2, and the installation groove The two sides of the 2 are respectively provided with chute 2a, and a tongue 3 is slidably installed in the installation groove 2 through the chute 2a. The first jacking mechanism 4 that rises; a sealing chuck 5 is respectively movably installed on both sides of the bottom of the fork 1a of the Y-shaped seat 1, and the swing ends of the two sealing chucks 5 are arranged oppositely, and the sealing chuck The bottom surface of the movable mounting end of the head 5 is provided with a bayonet 5a, and the position corresponding to the bayonet 5a on the Y-shaped seat 1 is provided with a position that can move up and down and cooperate with the bayonet 5a to prevent the sealing clip The second jacking mechanism 6 that the swing end of head 5 swings upwards. The clamping of the high-voltage wire can be realized through the cooperation of the tab 3 and the sealing chuck 5, and the escape of the high-voltage wire can be realized through the cooperation of the bayonet 5a and the second jacking mechanism 6, and the structure is simple and easy to use.

The above-mentioned first jacking mechanism 4 includes a first push rod 4b sleeved with a first pressure spring 4a, the upper end of the first push rod 4b is connected with the tongue 3, and the lower end of the first push rod 4b is movably inserted in Inside the installation groove 2. The position corresponding to the lower end of the first push rod 4b in the installation groove 2 is provided with a first boss 4c, the lower end of the first push rod 4b is movably inserted into the first boss 4c, and the first The upper end of the compression spring 4a abuts against the bottom surface of the tongue 3, and the lower end of the first compression spring 4a abuts against the top surface of the first boss 4c.

The above-mentioned second jacking mechanism 6 includes a second push rod 6b sleeved with a second pressure spring 6a, and the upper end of the second push rod 6b is provided with a chamfer 6c matched with the bayonet 5a, and the chamfer 6c Clamped in the bayonet 5a, the lower end of the second push rod 6b is movably inserted into the Y-shaped seat 1 . Through the cooperation of the bayonet 5a and the oblique cut 6c, the positioning of the sealing chuck 5 can be realized to prevent the high-voltage wire from falling off; at the same time, when the tension of the equipotential connection line is greater than the elastic force of the second compression spring 6a, the oblique cut 6c can be removed from the Out of the bayonet 5a, so as to realize the escape function. The second push rod 6b is provided with a second boss 6d, the upper end of the second compression spring 6a is against the bottom surface of the second boss 6d, and the lower end of the second compression spring 6a is in contact with the Y-shaped seat 1 offset. The bayonet 5a includes an inclined surface and an arc surface, and the inclined surface and the chamfer 6c form a locking structure to prevent the swing end of the sealing chuck 5 from swinging upward under the action of a small force, and the arc surface The swing end of the sealing chuck 5 will not be hindered from swinging downward.

The movable mounting end of the sealing chuck 5 is swingably mounted on the Y-shaped seat 1 through a rotating shaft 5b with a return torsion spring. In this way, when the high-voltage wire is stuck into the sealing chuck 5, the return torsion spring will drive the sealing chuck 5 to automatically return, and then the two sealing chucks 5 will form a sealing structure again, thereby preventing the high-voltage wire from falling off.

The top surface of the above-mentioned tab 3 is an arc surface matched with the high-voltage wire, so that the high-voltage wire can be better clamped. The sealing chuck 5 is a curved structure that bends downward, which can facilitate the smooth entry of high-voltage wires. At the initial position, the gap between the swing ends of the two sealing chucks 5 is smaller than the diameter of the high-voltage wire, so as to prevent the high-voltage wire from falling off.

When the present invention is used, it needs to be used together with the equipotential connecting wire and the insulating operating rod 7. Specifically, the equipotential connecting wire is first connected to the equipotential clamp, and then the equipotential clamp is installed on the insulating operating rod through a threaded connection. 7 on.

When the helicopter is close to the high-voltage wire, first extend the insulating operating rod 7, then align the fork 1a of the equipotential clamp with the high-voltage wire, and push it slightly to the high-voltage wire, so that the high-voltage wire passes through the two sealing chucks 5, in the process of passing through, the high-voltage wire will drive the swing end of the sealing chuck 5 to swing downward (see Figure 2: in the process of downward swing, since the right side of the bayonet 5a is an arc surface, so will not hinder the swing end of the sealing chuck 5 from swinging downwards), to increase the gap between the sealing chucks 5, until the high-voltage wire successfully enters the sealing chuck 5, after the high-voltage wire enters the sealing chuck 5, the sealing clip The head 5 returns to the initial position under the action of the return torsion spring; at the same time, the high-voltage wire is supported by the tab 3, and the high-voltage wire is sandwiched between the tab 3 and the sealing chuck 5, and, between the bayonet 5a and the beveled 6c and the second jacking mechanism 6, the sealing chuck 5 will not swing up at the swing end within a certain force range (see Figure 2: since the left side of the bayonet 5a is an inclined plane, the inclined plane It will form a clamping structure with the bevel 6c, which can effectively prevent the swing end of the sealing chuck 5 from swinging upwards), thereby effectively preventing the high-voltage wire from falling off; Pull the clamp outward (the strength depends on the vertical length of the inclined surface and the parameters of the second compression spring 6a, the vertical length and parameters can be designed according to actual needs), so that the inclined surface of the bayonet 5a will force the oblique cut 6c downward Push until the chamfer 6c is completely released from the bayonet 5a, the swing end of the sealing chuck 5 can swing upwards, thereby increasing the gap between the two sealing chucks 5, so that the high-voltage wire can be enlarged from the escape from the gap, thereby ensuring the safe escape of the helicopter. After use, it is enough to manually make the chamfer 6c and the bayonet 5a form a snap-fit structure again.

The present invention can realize the clamping of the high-voltage wire through the cooperation of the tongue 3 and the sealing chuck 5. At the same time, the escape of the high-voltage wire can be realized through the cooperation of the bayonet 5a and the second jacking mechanism 6. The structure is simple and easy to use; The cooperation between the opening 5a and the bevel 6c can realize the positioning of the sealing chuck 5 and prevent the high-voltage wire from falling off; at the same time, when the tension of the equipotential connection line is greater than the elastic force of the second compression spring 6a, the bevel 6c can be released from the bayonet. 5a, so as to realize the escape function; when the high-voltage wire is stuck into the sealing chuck 5, the return torsion spring will drive the sealing chuck 5 to automatically return, and then the two sealing chucks 5 will form a sealing structure again, thereby preventing high-voltage The wire has come off.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (10)

1. A limited grip equipotential clamp for UHV helicopter live work, comprising Y-shaped seat (1), is characterized in that, The bottom of the fork (1a) of the Y-shaped seat (1) is provided with a downward mounting groove (2), and both sides of the mounting groove (2) are respectively provided with slide grooves (2a), and the mounting groove ( 2) A tab (3) is slidably installed inside through the chute (2a), and the bottom of the tab (3) is provided with a first lifter that can move up and down and lift the tab (3). institution (4); A sealing chuck (5) is movably installed on both sides of the bottom of the fork (1a) of the Y-shaped seat (1), and the swing ends of the two sealing chucks (5) are arranged oppositely. The bottom surface of the movable mounting end of (5) is provided with a bayonet (5a), and the position corresponding to the bayonet (5a) on the Y-shaped seat (1) is provided with a movable up and down and corresponding to the bayonet (5a) Cooperate with a second jacking mechanism (6) that prevents the swing end of the sealing chuck (5) from swinging upwards with a limited holding force. 2. The limited-grip equipotential clamp for UHV helicopter live work as claimed in claim 1, characterized in that: said first jacking mechanism (4) includes a first clamp with a first compression spring (4a) sleeved thereon. A push rod (4b), the upper end of the first push rod (4b) is connected to the tongue (3), and the lower end of the first push rod (4b) is movably inserted into the installation groove (2). 3. The limited-grip equipotential clamp for UHV helicopter live work as claimed in claim 2, characterized in that: the position corresponding to the lower end of the first ejector rod (4b) in the installation groove (2) is provided with The first boss (4c), the lower end of the first push rod (4b) is movably inserted in the first boss (4c), the upper end of the first compression spring (4a) is connected with the tongue (3 ) against the bottom surface, and the lower end of the first compression spring (4a) is against the top surface of the first boss (4c). 4. The limited-grip equipotential clamp for UHV helicopter live work as claimed in claim 1, characterized in that: said second jacking mechanism (6) includes a second spring (6a) sleeved with a second spring (6a). Push rod (6b), the upper end of the second push rod (6b) is provided with a chamfer (6c) matched with the bayonet (5a), and the chamfer (6c) is snapped into the bayonet ( 5a), the lower end of the second push rod (6b) is movably inserted into the Y-shaped seat (1). 5. The limited-grip equipotential clamp for UHV helicopter live work as claimed in claim 4, characterized in that: said second push rod (6b) is provided with a second boss (6d), said first The upper end of the second compression spring (6a) abuts against the bottom surface of the second boss (6d), and the lower end of the second compression spring (6a) abuts against the Y-shaped seat (1). 6. The limited-grip equipotential clamp for UHV helicopter live work as claimed in claim 4, characterized in that: the bayonet (5a) includes an inclined surface and an arc surface, and the inclined surface and the chamfer (6c ) form a clamping structure, and the arc surface can allow the swing end of the sealing chuck (5) to swing downward. 7. The limited-grip equipotential clamp for UHV helicopter live work as claimed in claim 1, characterized in that: the movable mounting end of the sealing chuck (5) passes through a rotating shaft (5b) with a return torsion spring It is swingably installed on the Y-shaped seat (1). 8. The limited-grip equipotential clamp for live-line work of UHV helicopters according to claim 1, characterized in that: the top surface of the tongue (3) is an arc surface matched with high-voltage wires. 9. The limited-grip equipotential clamp for live-line work of UHV helicopters according to claim 1, characterized in that: the sealing chuck (5) is a curved structure bent downwards. 10. The limited-grip equipotential clamp for UHV helicopter live work as claimed in claim 1, characterized in that: in the initial position, the gap between the swing ends of the two sealing chucks (5) is smaller than that of the high voltage The diameter of the wire.