CN212907525U - Interlocking device of isolating switch - Google Patents

Abstract

The utility model relates to an interlocking device of an isolating switch, which comprises an upper interlocking operating mechanism and a lower interlocking operating mechanism, wherein the upper interlocking operating mechanism is arranged on an upper mounting bracket, the lower interlocking operating mechanism is arranged on a lower mounting bracket, and an L-shaped interlocking rod is arranged between the upper interlocking operating mechanism and the lower interlocking operating mechanism; the upper end of the interlocking rod is fixedly connected with an upper interlocking catch used for isolating an isolation operation shaft in the upper interlocking operation mechanism, and the lower end of the interlocking rod is abutted with a lock head of a lower interlocking operation mechanism pivoted on the lower mounting bracket; the upper mounting bracket is provided with a U-shaped bracket, the interlocking rod penetrates through two ends of an opening of the U-shaped bracket, and a return spring sleeved on the interlocking rod is arranged in the U-shaped bracket; one end of the reset spring is connected to the interlocking rod, and the other end of the reset spring is connected to the side wall of the upper end of the U-shaped support. The utility model discloses a simple structure has avoided the problem of mutual interference between malfunction and the spare part, and interlocking effect is better.

Description

Interlocking device of isolating switch

Technical Field

The utility model relates to a high voltage isolator, especially a stable isolator's of interlock.

Background

The high-voltage isolating switch is an important switching device in an electric system of a power plant and a transformer substation, needs to be matched with a high-voltage circuit breaker for use, is used for switching on, switching off or switching over a line under the condition that voltage exists in high-voltage equipment and load is loaded, has the main function of ensuring the safety of the high-voltage device and the device during maintenance work, plays a role in isolating the voltage, cannot be used for switching off, putting in load current and switching off short-circuit current, and can only be used for certain switching operations without generating strong electric arcs. The operating mechanism of the high-voltage isolating switch can drive the isolating switch to operate, and the switching-on and switching-off actions of the isolating switch are completed. However, in the interlocking device of the existing high-voltage isolating switch, the 2mm steel plate serving as the interlocking plate is driven by the driving mechanism to shield the isolating operation shaft, but the 2mm steel plate is too large, so that the overall strength difference is short, the service life is short, and the interlocking device has the problem of mutual interference with other interlocking parts such as a baffle plate of the isolating operation shaft, and is easy to cause product accidents and interlocking failure.

SUMMERY OF THE UTILITY MODEL

To current not enough, the utility model provides a isolator's interlock that interlock is stable.

The utility model provides a technical scheme that its technical problem adopted is: an interlocking device of an isolating switch comprises an upper interlocking operating mechanism and a lower interlocking operating mechanism, wherein the upper interlocking operating mechanism is installed on an upper installation support, the lower interlocking operating mechanism is installed on a lower installation support, and an L-shaped interlocking rod is arranged between the upper interlocking operating mechanism and the lower interlocking operating mechanism; the upper end of the interlocking rod is fixedly connected with an upper interlocking catch which is used for isolating an isolation operation shaft in the upper interlocking operation mechanism; the lower end of the interlocking rod is abutted with a lock head of a lower interlocking operating mechanism pivoted on the lower mounting bracket; the upper mounting bracket is provided with a U-shaped bracket, the interlocking rod penetrates through two ends of an opening of the U-shaped bracket, and a return spring sleeved on the interlocking rod is arranged in the U-shaped bracket; one end of the reset spring is connected to the interlocking rod, and the other end of the reset spring is connected to the side wall of the upper end of the U-shaped support.

Preferably, the interlock lever is a metal lever having a square cross section.

Preferably, the lower mounting bracket is further provided with a limiting member for limiting the vertical movement of the interlocking lever.

Preferably, the stopper is in an L-shaped configuration with one end connected to the lower mounting bracket and the other end in a direction perpendicular to the surface of the lower mounting bracket, and the interlock lever is located in the L-shaped configuration and abuts against the surface of the other end.

Preferably, the lower mounting bracket is further connected with a support block supported on a side wall of the interlocking rod, the lower mounting bracket is further provided with a support rod supported at the bottom of the interlocking rod, and the support block is arranged above the support rod.

Preferably, the interlocking rod is provided with symmetrical convex columns at the part in the U-shaped bracket, and the reset spring is sleeved on the interlocking rod and enables two ends of the reset spring to be correspondingly connected with the convex columns and the side wall at the upper end of the U-shaped bracket.

The beneficial effects of the utility model reside in that: the utility model discloses a simple structure, adopt the interlocking lever to replace the interlocking plate on traditional big surface, reduced and operating device between the contact surface, the shape of interlocking lever just does benefit to and sets up its side operating device from top to bottom, and through the both ends at the interlocking lever set up with the upper and lower part of being connected between the operating device correspond, make whole interlock reduce with other spare parts between the contact chance, the problem of mutual interference between the part has been avoided producing, U type support and reset spring have then ensured interlock's linkage and interlocking lever's direction of motion, such structure can not lead to the problem of interference between malfunction and the spare part, stable in structure, interlocking effect is better.

Drawings

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

fig. 2 is a schematic structural diagram of an embodiment of the present invention in a front view;

part names and serial numbers in the figure: 1-upper interlocking operating mechanism 10-upper mounting bracket 11-isolation operating shaft 2-lower interlocking operating mechanism 20-line mounting bracket 21-lock head 3-interlocking rod 30-convex column 4-upper interlocking catch 5-U-shaped bracket 6-reset spring 7-limiting piece 8-supporting block 9-supporting rod.

Detailed Description

To clearly illustrate the objects, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, which are clearly and completely described below. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. Furthermore, directional terms as referred to in the present disclosure, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., refer only to the direction of the attached drawings, and directional terms used are intended to better and more clearly illustrate and understand the present invention rather than to indicate or imply the orientation the present invention must have, and therefore should not be construed as limiting the present invention.

The embodiment of the present invention is shown in fig. 1 to fig. 2, an interlock device of an isolating switch, comprising an upper interlock operating mechanism 1 and a lower interlock operating mechanism 2, the two interlock operating mechanisms are the same as the interlock operating mechanism in the conventional isolating switch, the upper interlock operating mechanism 1 is mounted on an upper mounting bracket 10, the lower interlock operating mechanism 2 is mounted on a lower mounting bracket 20, an L-shaped interlocking rod 3 is arranged between the upper interlock operating mechanism 1 and the lower interlock operating mechanism 2, the interlocking rod 3 links the upper interlock operating mechanism 1 and the lower interlock operating mechanism 2, the L-shaped structure facilitates the mounting in the isolating switch, the L-shaped interlocking rod replaces the conventional interlocking plate with a large surface, the contact surface between the interlocking rod and the operating mechanism is reduced, and the interference between other parts is avoided; the upper end of the interlocking rod 3 is fixedly connected with an upper interlocking catch 4, and the upper interlocking catch 4 is used for isolating an isolating operation shaft 11 in the upper interlocking operation mechanism 1; the lower end of the interlocking rod 3 is abutted with a lock head 21 of a lower interlocking operation mechanism 2 pivoted on the lower mounting bracket 20, so that the upper interlocking baffle 4 is determined to be in a flat plate-shaped structure, and an interlocking structure is formed between the upper interlocking operation mechanism and the lower interlocking operation mechanism; the upper mounting bracket 10 is provided with a U-shaped bracket 5, the interlocking rod 3 penetrates through two ends of an opening of the U-shaped bracket 5, and the U-shaped bracket 5 is internally provided with a return spring 6 which is sleeved on the interlocking rod 3, so that two side walls of the U-shaped bracket 5 are in the horizontal direction, the return spring 6 is positioned in the opening of the U-shaped bracket 5 and is sleeved on the interlocking rod 3 at the same time, and the power for movement of the interlocking rod 3 is given by the elastic force of the return spring 6; one end of the reset spring 6 is connected to the interlocking rod 3, the other end of the reset spring is connected to the side wall of the upper end of the U-shaped support 5, therefore, the interlocking rod 3 can move in a certain stroke under the action of the reset spring 6, the shape of the interlocking rod 3 is beneficial to being arranged on the side edge of the upper operating mechanism and the lower operating mechanism, corresponding parts connected with the upper operating mechanism and the lower operating mechanism are arranged at two ends of the interlocking rod 3, the whole interlocking device reduces the contact chance with other parts, the problem of mutual interference among the parts is avoided, the linkage of the interlocking device and the movement direction of the interlocking rod 3 are ensured by the U-shaped support 5 and the reset spring 6, the problems of false operation and interference among the parts are avoided, the structure is stable, and the interlocking effect is better. In the interlocking process, when in a locking state, the lock head 21 is pressed against the interlocking rod 3 downwards, the interlocking rod 3 is at the lowest position, the return spring 6 is in a compressed state under the action of the interlocking rod 3, and the upper interlocking baffle 4 is shielded on the isolation operating shaft 11 of the upper interlocking operating mechanism 1; after the interlocking device is started, the lock head 21 rotates upwards relative to the lower end of the interlocking rod 3, the pressure pressed on the interlocking rod 3 disappears, the interlocking rod 3 moves upwards under the action of the elastic force of the return spring 6, and the upper interlocking baffle 4 moves upwards along with the interlocking rod 3, so that the isolation operation shaft 11 is exposed, and corresponding operation is performed on the isolation switch.

In a further improvement, as shown in fig. 1 and 2, the interlocking lever 3 is a metal lever with a square cross section, so that the installation is easy due to the square cross section, and the contact area between the interlocking lever and the lock head 21 and the connection strength between the interlocking lever and the upper interlocking barrier 4 are ensured, so that the interlocking effect is ensured.

In a further improvement, as shown in fig. 1 and 2, the lower mounting bracket 20 is further provided with a limiting member 7 for limiting the vertical movement of the interlocking rod 3, so that the vertical mounting bracket is limited in the movement direction of the interlocking rod 3, the interlocking rod 3 is ensured to move in the limited direction and can move to a limited position, and the problem that the movement direction of the interlocking rod 3 deviates to cause the incomplete movement of the interlocking rod and further cause the incomplete interlocking is avoided. In order to facilitate the installation of the limiting member 7 and avoid interference between the limiting member 7 and other parts, the limiting member 7 is in an L-shaped structure, one end of the limiting member is connected to the lower mounting bracket 20, and the other end of the limiting member is in a direction perpendicular to the surface of the lower mounting bracket 20, the interlocking rod 3 is located in the L-shaped structure and abuts against the surface of the other end of the interlocking rod, when the interlocking rod is installed, the interlocking rod can be installed along the edge of the lower mounting bracket 20, one end of the interlocking rod clings to the surface of the lower mounting bracket 20, the other end of the interlocking rod 3 is located on the surface of the lower mounting bracket 20 and is perpendicular to the surface of the lower mounting bracket 20, the interlocking rod 3 is located inside the L-shaped structure formed by the two ends of the limiting member 7, the other end of the limiting member 7 has a limiting effect on the interlocking rod 3, when the interlocking rod 3, ensuring its movement in a defined direction, ensuring the interlocking effect.

In a further improvement, as shown in fig. 1 and fig. 2, a support block 8 supported on a side wall of the interlocking rod 3 is further connected to the lower mounting bracket 20, a support rod 9 supported at the bottom of the interlocking rod 3 is further provided on the lower mounting bracket 20, the support block 8 is provided above the support rod, the interlocking rod 3 is under the combined action of the support rod 9 and the support block 8, so that the interlocking rod 3 and the lock head 21 have good abutting against each other, the support rod 9 supports the interlocking rod 3 in the vertical direction to prevent the interlocking rod 3 from sliding down and disengaging from abutting against the lock head 21, and the support block 8 supports the interlocking rod 3 in the horizontal direction to ensure that the interlocking rod 21 and the interlocking rod 3 have the maximum contact area in the horizontal direction, and simultaneously, the interlocking rod 3 can be prevented from touching other parts on the lower mounting bracket 20 during movement.

In a further improvement, as shown in fig. 1 and 2, symmetrical protruding columns 30 are arranged on the interlocking rod 3 in the U-shaped support 5, and the return spring 6 is sleeved on the interlocking rod 3 and has two ends correspondingly connected with the protruding columns 30 and the side walls at the upper end of the U-shaped support 5, so that the distance between the protruding columns 30 and the side walls at the lower end of the U-shaped support 5 forms the movement stroke of the interlocking rod 3, and the positions of the protruding columns 30 on the interlocking rod can be set according to the elastic force of the return spring 6 and the required movement distance of the interlocking rod 3, thereby meeting different requirements.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims (6)

1. An interlock device of a disconnecting switch is characterized in that: the interlocking device comprises an upper interlocking operating mechanism and a lower interlocking operating mechanism, wherein the upper interlocking operating mechanism is arranged on an upper mounting bracket, the lower interlocking operating mechanism is arranged on a lower mounting bracket, and an L-shaped interlocking rod is arranged between the upper interlocking operating mechanism and the lower interlocking operating mechanism; the upper end of the interlocking rod is fixedly connected with an upper interlocking catch which is used for isolating an isolation operation shaft in the upper interlocking operation mechanism; the lower end of the interlocking rod is abutted with a lock head of a lower interlocking operating mechanism pivoted on the lower mounting bracket; the upper mounting bracket is provided with a U-shaped bracket, the interlocking rod penetrates through two ends of an opening of the U-shaped bracket, and a return spring sleeved on the interlocking rod is arranged in the U-shaped bracket; one end of the reset spring is connected to the interlocking rod, and the other end of the reset spring is connected to the side wall of the upper end of the U-shaped support.

2. The interlock device of the disconnector according to claim 1, wherein: the interlocking rod is a metal rod with a square section.

3. The interlock device of the disconnector according to claim 1, wherein: and the lower mounting bracket is also provided with a limiting part for limiting the interlocking rod to move up and down.

4. The interlock device of the disconnector according to claim 3, wherein: the limiting piece is of an L-shaped structure, one end of the limiting piece is connected to the lower mounting bracket, the other end of the limiting piece is perpendicular to the surface of the lower mounting bracket, and the interlocking rod is located in the L-shaped structure and abuts against the surface of the other end of the interlocking rod.

5. The interlock device of the disconnecting switch according to claim 1, wherein the lower mounting bracket is further connected with a support block supported on a sidewall of the interlock lever, the lower mounting bracket is further provided with a support rod supported on a bottom of the interlock lever, and the support block is disposed above the support rod.

6. The interlocking device of the isolating switch as claimed in claim 1, wherein the interlocking rod is provided with symmetrical protruding columns at a portion inside the U-shaped bracket, and the reset spring is sleeved on the interlocking rod and has two ends correspondingly connected with the protruding columns and the side wall at the upper end of the U-shaped bracket.

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