CN213635545U

CN213635545U - Metal oxide lightning arrester for subway direct current system

Info

Publication number: CN213635545U
Application number: CN202022751968.1U
Authority: CN
Inventors: 陶宏远; 刘向阳; 马晓宇; 刘俊; 刘立群
Original assignee: Xi'an Qinyang Electric Co ltd
Current assignee: Xi'an Qinyang Electric Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-07-06
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a metal oxide arrester for a subway direct current system, which comprises a main body and a base plate fixed on the surface of the main body, wherein connecting pins are arranged at both ends of the main body, an easy-to-disassemble connecting mechanism is arranged between the connecting pins and the main body, the easy-to-disassemble connecting mechanism comprises two connecting seats respectively fixed at both ends of the main body, slots matched with the connecting pins are arranged at the top ends of the connecting seats, bayonet locks are arranged at the top ends of the connecting pins in a penetrating manner, and through holes corresponding to the bayonet locks are arranged on the surfaces of both sides of the connecting seats; through setting up by connecting seat, slot, bayonet lock, through hole, block mechanism and support the easy dismouting coupling mechanism that tight mechanism constitutes for can be solitary follow the surface of main part after the follow-up damage of pin pull down change, solved the unable problem of pulling down and changing of pin in the former device, thereby brought conveniently for the maintenance of later stage to the metal oxide arrester.

Description

Metal oxide lightning arrester for subway direct current system

Technical Field

The utility model belongs to the technical field of the arrester, concretely relates to metal oxide arrester for subway direct current system.

Background

A metal oxide arrester is installed in a subway direct current system, mainly plays a role in lightning protection in the subway direct current system, and is an indispensable safety protection device in the subway direct current system.

Present subway is metal oxide arrester for direct current system when using, because pin and main part are non-detachable fixed connection, lead to the pin to carry out the split with the main part, when follow-up pin takes place to buckle or damage, operating personnel can't be solitary pull down the pin and change, and must change whole metal oxide arrester, and is comparatively inconvenient, for this reason the utility model provides a subway is metal oxide arrester for direct current system.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a metal oxide arrester for subway direct current system to solve the current metal oxide arrester for subway direct current system that proposes in the above-mentioned background art when using, because the pin is detachable fixed connection with the main part, lead to the pin can't carry out the split with the main part, when buckling or damaging takes place for follow-up pin, operating personnel can't the solitary pin of pulling down and change, and must change whole metal oxide arrester, comparatively inconvenient problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a metal oxide arrester for subway direct current system, includes the main part and fixes the base plate on the main part surface, the pin is all installed at the both ends of main part, be equipped with easy dismouting coupling mechanism between pin and the main part, easy dismouting coupling mechanism includes that two are fixed respectively at the connecting seat at main part both ends, the slot with pin looks adaptation is seted up on the top of connecting seat, the top of pin is run through and is provided with the bayonet lock, just the both sides surface of connecting seat all seted up with the corresponding through hole of bayonet lock, be equipped with block mechanism between bayonet lock and the connecting seat, the inboard of slot is equipped with and supports tight mechanism.

Preferably, the clamping mechanism comprises a plurality of first spring grooves arranged inside two ends of the clamping pin, the top end of each first spring groove is connected with a telescopic clamping ball through a spring, the inner wall of each through hole is provided with a circular clamping groove corresponding to the telescopic clamping ball, and the top end of the telescopic clamping ball is clamped inside the circular clamping groove.

Preferably, support tight mechanism including setting up the inside second spring groove in connecting seat bottom, the end connection in second spring groove has flexible tight piece that supports, just the top of flexible tight piece that supports runs through to the inboard and the pin of slot and closely laminate.

Preferably, the top end of the pin is provided with a through hole corresponding to the bayonet lock in a penetrating manner, and the bottom surface of the pin is provided with a reserved mounting hole.

Preferably, the upper surface and the lower surface of the base plate are provided with sliding covers, the two sliding covers are respectively sleeved on the surfaces of the two ends of the main body, and a sliding mechanism is arranged between the main body and the sliding covers.

Preferably, the sliding mechanism comprises a T-shaped guide block fixed on the surface of the main body, a strip-shaped slideway corresponding to the T-shaped guide block is arranged on the surface of the sliding cover, and the top end of the T-shaped guide block is positioned on the outer side of the sliding cover.

Preferably, the surface of both sides of main part all is provided with two circular convex blocks symmetrically, and two circular convex blocks are in the both sides of bar slide respectively, four circular card holes corresponding with circular convex block have all been seted up to the surface of both sides of sliding closure.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through setting up by connecting seat, slot, bayonet lock, through hole, block mechanism and support the easy dismouting coupling mechanism that tight mechanism constitutes for can be solitary follow the surface of main part after the follow-up damage of pin pull down change, solved the unable problem of pulling down and changing of pin in the former device, thereby brought conveniently for the later stage to the maintenance of metal oxide arrester, just the utility model provides a metal oxide arrester has the appearance little, is applicable to small-size cabinet body, practices thrift advantages such as space.

2. Through the sliding cover, the T-shaped guide block, the strip-shaped slide way, the circular convex block and the circular clamping hole which are arranged, after the connection of the pins at the two ends of the main body with the external conductive structure is completed, an operator can pull the sliding cover and enable the sliding cover to cover the pins in the inner side, so that the connection part of the pins and the external conductive structure is well protected.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a front sectional view of the present invention;

fig. 3 is a side cross-sectional view of the present invention;

FIG. 4 is an enlarged view of a portion of the area A in FIG. 3 according to the present invention;

in the figure: 1. a base plate; 2. a slide cover; 3. a pin; 4. a T-shaped guide block; 5. a circular bump; 6. a strip-shaped slideway; 7. a circular clamping hole; 8. a main body; 9. a connecting seat; 10. a bayonet lock; 11. a slot; 12. a first spring groove; 13. the ball is clamped in a telescopic way; 14. a circular slot; 15. a second spring groove; 16. a telescopic abutting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 to 4, the present invention provides a technical solution: a metal oxide arrester for a subway direct current system comprises a main body 8 and a base plate 1 fixed on the surface of the main body 8, wherein pins 3 are installed at two ends of the main body 8, an easy-to-mount and easy-to-dismount connecting mechanism is arranged between the pins 3 and the main body 8, the easy-to-mount and easy-to-dismount connecting mechanism comprises two connecting seats 9 respectively fixed at two ends of the main body 8, slots 11 matched with the pins 3 are formed in the top ends of the connecting seats 9, bayonet pins 10 penetrate through the top ends of the pins 3, through holes corresponding to the bayonet pins 10 are formed in the surfaces of two sides of the connecting seats 9, a clamping mechanism is arranged between the bayonet pins 10 and the connecting seats 9, a resisting mechanism is arranged on the inner side of each slot 11, the clamping mechanism comprises a plurality of first spring grooves 12 arranged inside two ends of the bayonet pins 10, the top ends of the first spring grooves 12 are connected with telescopic clamping balls, and the top end of the telescopic clamping ball 13 is clamped on the inner side of the circular clamping groove 14, so that the pin 3 can be detached from the surface of the main body 8 independently for replacement after being damaged subsequently.

In this embodiment, preferably, the abutting mechanism includes a second spring groove 15 disposed inside the bottom end of the connecting seat 9, the end of the second spring groove 15 is connected to a telescopic abutting block 16 through a spring, and the top end of the telescopic abutting block 16 penetrates through the inner side of the slot 11 to be tightly attached to the pin 3, so that the pin 3 is more tightly fastened after being installed.

In this embodiment, preferably, the top end of the pin 3 is provided with a through hole corresponding to the bayonet pin 10 in a penetrating manner, so that the bayonet pin 10 can smoothly pass through the pin 3, and the bottom surface of the pin 3 is provided with a reserved mounting hole for connecting the pin 3 with an external conductive structure subsequently.

Example 2

In this embodiment, preferably, the upper and lower surfaces of the base plate 1 are provided with the sliding covers 2, the two sliding covers 2 are respectively sleeved on the surfaces of the two ends of the main body 8, the sliding mechanism is arranged between the main body 8 and the sliding covers 2, the sliding mechanism includes a T-shaped guide block 4 fixed on the surface of the main body 8, the surface of the sliding cover 2 is provided with a strip-shaped slideway 6 corresponding to the T-shaped guide block 4, and the top end of the T-shaped guide block 4 is located on the outer side of the sliding cover 2, so that the sliding cover 2 can slide on the surface of the main body 8.

In this embodiment, preferably, two circular convex blocks 5 are symmetrically fixed on the two side surfaces of the main body 8, the two circular convex blocks 5 are respectively located on two sides of the strip-shaped slideway 6, the sliding cover 2 is made of a rubber member, so that the sliding cover 2 has good elasticity and insulation, four circular clamping holes 7 corresponding to the circular convex blocks 5 are formed in the two side surfaces of the sliding cover 2, and the sliding cover 2 can be limited by the circular convex blocks 5 after sliding.

The utility model discloses a metal oxide arrester has the appearance little, be applicable to the small-size cabinet body, practices thrift advantages such as space, and big through-flow capacity, internal resistance piece heat radiation structure science, the resistance piece temperature rise is little, can change the through-flow capacity that promotes the arrester, novel structure, special electrode structure, break through conventional pattern, the installation of being convenient for.

The utility model discloses a theory of operation and use flow: when an operator needs to detach the pin 3 for replacement, the top end of the retractable detent ball 13 is gradually pushed into the inner side of the first spring groove 12 by pushing the detent 10 from the outer side of the connecting seat 9, so that the detent 10 can be pushed out from the pin 3 and the connecting seat 9, under the condition of no limit of the detent 10, the operator can directly pull the top end of the pin 3 away from the inner side of the slot 11 and replace the pin 3, during subsequent installation, the top end of the pin 3 is inserted into the inner side of the slot 11 by pushing the top end of the retractable abutment block 16 into the inner side of the second spring groove 15 by inserting the top end of the pin 3 until the through hole at the top end of the pin 3 can be aligned with the through hole on the surface of the connecting seat 9, and then the detent 10 is inserted into the through hole and the through hole from the outer side of the connecting seat 9 until the detent 10 can pass through the top end of the pin 3, the two ends of the bayonet pin 10 are respectively positioned at the inner sides of the two through holes, and the top end of the telescopic clamping ball 13 is clamped into the inner side of the circular clamping groove 14 under the pushing of the spring at the inner side of the first spring groove 12, so that the replacement of the pin 3 can be completed, and the problem that the pin 3 cannot be independently dismounted for replacement in the original device is solved;

after the connection of the pin 3 with the external conductive structure is completed, the operator can forcefully pull the sliding cover 2 to enable the circular convex block 5 to be extruded out of the inner side of the circular clamping hole 7 at the top end position of the strip-shaped slideway 6, so that the sliding cover 2 can smoothly slide under the guiding action of the T-shaped guide block 4 until the circular convex block 5 can be clamped into the inner side of the circular clamping hole 7 at the bottom end position of the strip-shaped slideway 6, the limitation of the sliding cover 2 can be completed, the sliding cover 2 can completely cover the pin 3 at the inner side at the moment, and the good protection effect is realized on the connection position of the pin 3 and the external conductive structure.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a subway is metal oxide arrester for direct current system, includes main part (8) and fixes base plate (1) on main part (8) surface, pin (3), its characterized in that are all installed to the both ends of main part (8): be equipped with easy dismouting coupling mechanism between pin (3) and main part (8), easy dismouting coupling mechanism includes that two are fixed respectively at connecting seat (9) at main part (8) both ends, slot (11) with pin (3) looks adaptation are seted up on the top of connecting seat (9), the top of pin (3) is run through and is provided with bayonet lock (10), just the both sides surface of connecting seat (9) all seted up with bayonet lock (10) corresponding through hole, be equipped with block mechanism between bayonet lock (10) and connecting seat (9), the inboard of slot (11) is equipped with and supports tight mechanism.

2. The metal oxide arrester of claim 1, wherein: the clamping mechanism comprises a plurality of first spring grooves (12) arranged inside two ends of a clamping pin (10), the top ends of the first spring grooves (12) are connected with telescopic clamping balls (13) through springs, circular clamping grooves (14) corresponding to the telescopic clamping balls (13) are formed in the inner walls of the through holes, and the top ends of the telescopic clamping balls (13) are clamped on the inner sides of the circular clamping grooves (14).

3. The metal oxide arrester of claim 1, wherein: the abutting mechanism comprises a second spring groove (15) arranged inside the bottom end of the connecting seat (9), the end part of the second spring groove (15) is connected with a telescopic abutting block (16), and the top end of the telescopic abutting block (16) penetrates through the inner side of the slot (11) to be tightly attached to the pin (3).

4. The metal oxide arrester of claim 1, wherein: the top end of the pin (3) is provided with a through hole corresponding to the bayonet lock (10) in a penetrating way, and the bottom end surface of the pin (3) is provided with a reserved mounting hole.

5. The metal oxide arrester of claim 1, wherein: the upper surface and the lower surface of the base plate (1) are provided with sliding covers (2), the sliding covers (2) are respectively sleeved on the surfaces of two ends of the main body (8), and a sliding mechanism is arranged between the main body (8) and the sliding covers (2).

6. The metal oxide arrester of claim 5, wherein: the sliding mechanism comprises a T-shaped guide block (4) fixed on the surface of the main body (8), a strip-shaped slide way (6) corresponding to the T-shaped guide block (4) is arranged on the surface of the sliding cover (2), and the top end of the T-shaped guide block (4) is positioned on the outer side of the sliding cover (2).

7. The metal oxide arrester of claim 5, wherein: the both sides surface of main part (8) all the symmetry be provided with two circular convex block (5), and two circular convex block (5) are in the both sides of bar slide (6) respectively, four circular card holes (7) corresponding with circular convex block (5) have all been seted up on the both sides surface of sliding closure (2).