CN213459563U

CN213459563U - Anti-twist pull rod

Info

Publication number: CN213459563U
Application number: CN202023039254.4U
Authority: CN
Inventors: 黄肇灿
Original assignee: Zhejiang Putai High Voltage Electric Co ltd
Current assignee: Zhejiang Putai High Voltage Electric Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-06-15
Anticipated expiration: 2030-12-16

Abstract

The utility model discloses a prevent turning round pull rod, include the insulator and set up in the bush and the sill bar of insulator, be formed with on the bush and have the open-ended inner chamber, be equipped with the closing cap on the opening, be equipped with intercommunication inner chamber and external through-hole on the closing cap, be equipped with the locking subassembly between closing cap and the bush, it is provided with the slide bar that extends the through-hole to slide in the inner chamber, the intracavity is equipped with the dish spring of drive slide bar towards closing cap one side motion, be formed with the bulge on the through-hole wall, the slide bar periphery wall is equipped with the cooperation bulge and is used for restricting slide bar pivoted breach portion, breach portion sets up along the axial extension of slide bar. The utility model has the advantages of it is following and effect: the utility model discloses can prevent that the slide bar from rotating to avoid the hookup location between slide bar and the electric element to break off.

Description

Anti-twist pull rod

Technical Field

The utility model relates to an electrical equipment technical field, in particular to prevent turning round pull rod.

Background

In a medium-voltage or high-voltage circuit breaker or contactor, a moving contact and a fixed contact are closed and opened under a vacuum environment to prevent electric arcs from being generated, and in order to transmit the action of an operating mechanism to the moving contact and simultaneously realize insulation between the moving contact and the operating mechanism, an insulating pull rod is connected between the end part of the moving contact and the operating mechanism.

The existing insulating pull rod comprises an insulator, a bottom rod and a lining, wherein the bottom rod and the lining are arranged on the insulator, an inner cavity with an opening is formed in the lining, a slide rod is arranged in the inner cavity in a sliding mode, a sealing cover for sealing the opening is arranged on the lining, and a disc spring for driving the slide rod to move towards one side of the sealing cover is arranged in the inner cavity. The movable contact and the operating mechanism are respectively connected with the bottom rod and the sliding rod, and the sliding rod can rotate due to the fact that the existing insulating pull rod is not provided with a limiting structure.

When the operating mechanism, the insulating pull rod and the moving contact move, the vibrating rod can shake, the sliding rod can rotate under the action of vibration, and therefore the connecting position between the sliding rod and the moving contact forms torsional stress, the connecting position between the sliding rod and the moving contact is easy to break under the long-term acting force of the acting force, and the service life of the circuit breaker is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent turning round pull rod, should prevent turning round the pull rod and can prevent that the slide bar from rotating to avoid the hookup location between slide bar and the electric element to break off.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a prevent turning round pull rod, includes the insulator and sets up in the bush and the sill bar of insulator, be formed with on the bush and have the open-ended inner chamber, be equipped with the closing cap on the opening, be equipped with intercommunication inner chamber and external through-hole on the closing cap, be equipped with the locking subassembly between closing cap and the bush, it is provided with the slide bar that extends the through-hole to slide in the inner chamber, the intracavity is equipped with the dish spring of drive slide bar towards closing cap one side motion, be formed with the bulge on the through-hole wall, the slide bar periphery wall is equipped with the cooperation bulge and is used for restricting slide bar pivoted breach portion, breach portion sets up along the axial.

Through adopting above-mentioned technical scheme, the cooperation between breach portion and the bulge is used for restricting the slide bar and rotates for the slide bar can only realize reciprocating motion along its axial, thereby has avoided the slide bar when receiving the vibration, and the hookup location between slide bar and the electric component breaks, thereby guarantees the life of circuit breaker.

Further setting the following steps: the locking assembly is arranged in a plurality of groups around the periphery of the sealing cover and comprises a positioning hole arranged on the wall of the inner cavity, a connecting hole arranged on the sealing cover and communicated with the positioning hole, a positioning pin arranged in the connecting hole in a sliding manner and a driving piece for driving the positioning pin to be inserted into the positioning hole and used for limiting the sealing cover to be separated from the opening.

Through adopting above-mentioned technical scheme, the opening is located to the closing cap lid, inserts the locating hole through driving piece drive locating pin, with the locking of realization to the closing cap. When the driving piece does not drive the positioning pin, the sealing cover can be separated from the opening, so that the sealing cover can be detachably mounted, and the setting mode can realize the later maintenance of the pull rod.

Further setting the following steps: the driving piece is in threaded connection with the connecting hole, and a spring for driving the positioning pin to move back to the positioning hole is connected between the connecting hole and the positioning pin.

Through adopting above-mentioned technical scheme, threaded connection's mode drives the driving piece and moves towards the locating pin, and the spring that the deuterogamies and set up to realize the reciprocating motion that the locating pin lies in the connecting hole.

Further setting the following steps: the locating pin includes fixed part and the flexible portion of connecting the fixed part, and when driving piece drive locating pin inserts the locating hole, the fixed part is located locating hole and connecting hole simultaneously.

Through adopting above-mentioned technical scheme, the setting of flexible portion can make the connecting hole of the better adaptation different shapes of locating pin, at the cooperation fixed part, when the fixed part is located locating hole and connecting hole simultaneously, has realized that the closing cap lies in the locking on the opening. The structure is lower in cost and more convenient to process.

Further setting the following steps: the outside of closing cap is equipped with keeps off the ring, be formed with the seal groove between bush and the closing cap, be equipped with first sealing washer in the seal groove, driving piece drive keeps off the ring and is located the seal groove with first sealing washer.

Through adopting above-mentioned technical scheme, driving piece drive keeps off the ring and seals first sealing washer in the seal groove, seals the gap that exists between bush and the closing cap for external impurity and rainwater can not get into the inner chamber, thereby prolongs the life of pull rod.

Further setting the following steps: and a second sealing ring is arranged between the sliding rod and the through hole.

Through adopting above-mentioned technical scheme, the setting of second sealing washer seals the gap between slide bar and the through-hole.

To sum up, the utility model discloses following beneficial effect has: the utility model discloses can prevent that the slide bar from rotating to avoid the hookup location between slide bar and the electric element to break off.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a sectional view of the embodiment;

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: 1. an insulator; 2. a bushing; 3. a bottom bar; 4. an opening; 5. an inner cavity; 6. sealing the cover; 7. a through hole; 8. a locking assembly; 81. positioning holes; 82. connecting holes; 83. positioning pins; 831. a fixed part; 832. a flexible portion; 84. a drive member; 9. a slide bar; 10. a disc spring; 11. a projection; 12. a notch portion; 13. a spring; 14. a baffle ring; 15. a sealing groove; 16. a first seal ring; 17. and a second seal ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 3, the VSL torsion-proof pull rod includes an insulator 1, and a bushing 2 and a bottom rod 3 fixedly disposed on the insulator 1, an inner cavity 5 having an opening 4 is formed on the bushing 2, a sealing cover 6 is disposed on the opening 4, a through hole 7 communicating the inner cavity 5 with the outside is formed on the sealing cover 6, and a locking assembly 8 is disposed between the sealing cover 6 and the bushing 2. A slide rod 9 extending out of the through hole 7 is arranged in the inner cavity 5 in a sliding manner, a disc spring 10 driving the slide rod 9 to move towards one side of the sealing cover 6 is arranged in the inner cavity 5, and the slide rod 9 and the bottom rod 3 are coaxially arranged. A protruding portion 11 is integrally formed on the wall of the through hole 7, a notch portion 12 matched with the protruding portion 11 and used for limiting the rotation of the sliding rod 9 is formed in the outer peripheral wall of the sliding rod 9, and the notch portion 12 extends along the axial direction of the sliding rod 9.

The locking assembly 8 is provided in a plurality of sets around the outer periphery of the cover 6, and the locking assembly 8 includes a positioning hole 81 formed in the wall of the inner cavity 5, a connecting hole 82 formed in the cover 6 and communicating with the positioning hole 81, a positioning pin 83 slidably provided in the connecting hole 82, and a driving member 84 for driving the positioning pin 83 to be inserted into the positioning hole 81 to restrict the cover 6 from being removed from the opening 4. The driving member 84 is a screw threadedly coupled to the coupling hole 82, and a spring 13 for driving the positioning pin 83 to move away from the positioning hole 81 is coupled between the coupling hole 82 and the positioning pin 83.

The positioning pin 83 includes a fixing portion 831 and a flexible portion 832 connecting the fixing portion 831, the flexible portion 832 is made of rubber, the fixing portion 831 is made of iron, and the fixing portion 831 are fixed by gluing, and when the driving member 84 drives the positioning pin 83 to be inserted into the positioning hole 81, the fixing portion 831 is located in both the positioning hole 81 and the connecting hole 82. A stop ring 14 is arranged on the outer side of the sealing cover 6, a sealing groove 15 is formed between the bushing 2 and the sealing cover 6, a first sealing ring 16 is arranged in the sealing groove 15, and a driving piece 84 penetrates through the stop ring 14 to be in threaded connection with the connecting hole 82 so as to position the first sealing ring 16 in the sealing groove 15. A second sealing ring 17 is arranged between the sliding rod 9 and the through hole 7.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a prevent turning round pull rod, includes insulator (1) and sets up in bush (2) and sill bar (3) of insulator (1), be formed with inner chamber (5) that have opening (4) on bush (2), be equipped with closing cap (6) on opening (4), be equipped with intercommunication inner chamber (5) and external through-hole (7) on closing cap (6), be equipped with locking Assembly (8) between closing cap (6) and bush (2), it is provided with slide bar (9) that extend through-hole (7) to slide in inner chamber (5), be equipped with dish spring (10) that drive slide bar (9) moved towards closing cap (6) one side in inner chamber (5), its characterized in that: through-hole (7) are formed with bulge (11) on the wall, slide bar (9) periphery wall is equipped with cooperation bulge (11) and is used for restricting slide bar (9) pivoted breach portion (12), axial extension setting along slide bar (9) is followed in breach portion (12).

2. The torsion-proof tie rod of claim 1, wherein: the locking assembly (8) is arranged in a plurality of groups around the periphery of the sealing cover (6), and the locking assembly (8) comprises a positioning hole (81) formed in the wall of the inner cavity (5), a connecting hole (82) formed in the sealing cover (6) and communicated with the positioning hole (81), a positioning pin (83) arranged in the connecting hole (82) in a sliding mode, and a driving piece (84) for driving the positioning pin (83) to be inserted into the positioning hole (81) and used for limiting the sealing cover (6) to be separated from the opening (4).

3. The torsion-proof tie rod of claim 2, wherein: the driving piece (84) is in threaded connection with the connecting hole (82), and a spring (13) for driving the positioning pin (83) to move back to the positioning hole (81) is connected between the connecting hole (82) and the positioning pin (83).

4. The torsion bar of claim 3, wherein: the positioning pin (83) comprises a fixing portion (831) and a flexible portion (832) connected with the fixing portion (831), and when the driving piece (84) drives the positioning pin (83) to be inserted into the positioning hole (81), the fixing portion (831) is located in the positioning hole (81) and the connecting hole (82) at the same time.

5. The torsion bar of claim 3, wherein: the outside of closing cap (6) is equipped with keeps off ring (14), be formed with seal groove (15) between bush (2) and closing cap (6), be equipped with first sealing washer (16) in seal groove (15), driving piece (84) drive keeps off ring (14) and is fixed a position first sealing washer (16) in seal groove (15).

6. The torsion-proof tie rod of claim 1, wherein: and a second sealing ring (17) is arranged between the sliding rod (9) and the through hole (7).