CN204516631U - A kind of rear door of switch cabinet interlock - Google Patents

Abstract

The utility model discloses an interlocking device for the back door of a switch cabinet, which comprises a lock bolt, an interlocking rod, an interlocking support, an interlocking support, a spring and an operating shaft of a grounding switch. The upper and lower ends of the lock support are symmetrically provided with bracket connection holes, one end of the interlock rod is connected to the interlock support, the other end of the interlock rod is connected to the interlock support, and the connecting end of the interlock rod and the interlock support is integrally provided with a boss , the connecting end of the interlocking rod and the interlocking bracket is provided with an anti-off hole, and an anti-off part is arranged in the anti-off hole, the spring is sleeved on the interlocking rod, and the operating shaft of the grounding switch is installed on the interlocking bracket and the interlocking support , and the operating shaft of the grounding switch is welded with a fan-shaped plate near the end of the interlock support, and the fan-shaped plate matches the boss on the interlock lever, and the fan-shaped board and the boss are locked together to limit the rotation of the grounding switch shaft. The above technical scheme has reasonable structure design, simple structure, high safety performance, convenient processing and easy installation.

Description

A switch cabinet rear door interlocking device

technical field

The utility model relates to the technical field of switch cabinets, in particular to an interlocking device for a rear door of a switch cabinet.

Background technique

In the power transmission and transformation system, the high-voltage switchgear is a very heavy electrical equipment in the power system. Once misoperation occurs, it will cause damage to the equipment or cause a failure of the power system. Facts have proved that relying solely on rules and regulations to constrain people Therefore, the regulations require that the switchgear must have perfect and reliable "five prevention" functions, so as to ensure the safe operation of people and the power grid. The interlocking of the rear door of the switch cabinet is a set of interlocking devices set up between the rear lower door and the rear side panel based on preventing mistaken entry into the charged compartment. When the switch cabinet is energized and running, once the rear door interlock is correctly locked, it cannot be opened unless it is violently damaged. The existing interlocking device for the rear door of the switch cabinet has a small safety factor, and its parts are not easy to process, and the parts are scattered, and the installation is cumbersome.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide an interlocking device for the rear door of a switchgear with reasonable structural design, simple structure, high safety performance, convenient processing and easy installation.

In order to achieve the above purpose, the utility model provides the following technical solutions: an interlocking device for the rear door of the switch cabinet, including a lock bolt, an interlocking rod, an interlocking support, an interlocking bracket, a spring and an operating shaft of a grounding switch. The middle part of the lock support is provided with a fixed installation hole, and the upper and lower ends of the interlock support are symmetrically provided with support connection holes for installing the interlock bracket. One end of the interlock rod is connected to the interlock support, and the other end of the interlock rod is connected to the interlock support The connecting end of the interlocking rod and the interlocking support is integrally provided with a boss, and the connecting end of the interlocking rod and the interlocking bracket is provided with an anti-off hole, and an anti-off part is arranged in the anti-off hole. The spring is sleeved on the interlocking rod, and the spring is located between the interlocking bracket and the interlocking support. A fan-shaped plate is welded at the end of the lock support, and the fan-shaped plate matches the boss on the interlocking rod, and the fan-shaped plate and the boss are locked together to limit the rotation of the grounding switch shaft.

By adopting the above technical scheme, when the rear lower door of the switch cabinet body is not closed, the spring and the interlock lever are in the initial reset state, the sector plate is locked with the boss on the interlock lever, and the operating shaft of the ground switch of the switch cabinet body cannot be rotated. That is, the grounding switch cannot be opened. Reasonable structural design, simple structure, high safety performance, convenient processing and easy installation.

The utility model is further configured as follows: the center line of the locking bolt coincides with the interlocking rod, and one end of the locking bolt is provided with a connection gap matching the fan-shaped plate. The boss contacts and pushes the interlock lever to move backward, the spring is compressed, and the grounding switch operation shaft can be rotated 90° counterclockwise to lock the lower door or rotate 90° clockwise to open the lower door. Through this setting, the purpose of preventing the switch cabinet body from entering the live compartment by mistake can be achieved, and the safety performance is higher.

The utility model is further set as: the first interlock hole for the movement of the interlock rod is arranged on the interlock support, the second interlock hole for the movement of the interlock rod is arranged on the interlock bracket, and The centerline of the first interlocking hole coincides with the centerline of the second interlocking hole. Through this setting, the first interlocking hole and the second interlocking hole are set reasonably, the interlocking rod is conveniently connected, and the operation is reliable.

The utility model is further set as follows: the interlocking support is provided with a third interlocking hole for the movement of the grounding switch operation shaft, and the interlocking bracket is provided with a fourth interlocking hole for the movement of the grounding switch operation shaft , and the centerline of the third interlocking hole coincides with the centerline of the fourth interlocking hole. Through this setting, the third interlocking hole and the fourth interlocking hole are set reasonably, the operation shaft of the grounding switch is conveniently connected, and the operation is reliable.

The utility model is further configured as: the center line of the interlocking rod and the center line of the grounding switch operating shaft are parallel to each other. Through this setting, the installation of the interlock lever and the operating shaft of the grounding switch is more reasonable.

The utility model is further configured as follows: the anti-off holes are screw holes, and the anti-off parts are hexagon socket screws. Through this setting, the structure of the anti-off piece is simple and the installation is convenient.

The utility model is further configured as follows: the longitudinal section of the interlocking rod has a "T"-shaped structure. Through this setting, the structure setting of the interlocking lever is more reasonable.

The utility model is further set as: the interlocking rod is provided with an auxiliary installation hole for fixing the interlocking rod on the front end boss; the interlocking rod is provided with an auxiliary mounting hole for Test mounting holes for tests. Through this setting, the structure of the interlocking lever is more reasonable and the use is more convenient.

The utility model has the advantages that: compared with the prior art, the structure setting of the utility model is more reasonable, the interlock support is fixed on the existing switch cabinet side plate column, the lock bolt is fixed on the switch cabinet door, and the switch cabinet body When the rear lower door is not closed, the spring and the interlock lever are in the initial reset state, and the fan-shaped plate is locked with the boss of the interlock lever. Gate; the lower door at the back of the switch cabinet is tightly closed, the lock bolt is in contact with the boss at the upper end of the interlocking rod, the interlocking rod is pushed to move backward, and the spring is compressed, the operating shaft of the grounding switch can be rotated 90° counterclockwise, that is, the grounding switch of the switch cabinet is separated. Gate, locked and then the next door. At this time, the operating shaft of the grounding switch rotates 90° clockwise, that is, the grounding switch of the switch cabinet body is closed, and the rear lower door can be opened. It can achieve the purpose of preventing the switch cabinet body from entering the charged interval by mistake. The structure design is reasonable, the structure is simple, the safety performance is high, the processing is convenient, and it is easy to install.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments of the description.

Description of drawings

Fig. 1 is the structural representation of the state of opening the door of the utility model embodiment;

Fig. 2 is the sectional schematic diagram of the utility model embodiment;

Fig. 3 is the right view schematic diagram of the utility model embodiment;

Fig. 4 is the schematic top view of the utility model embodiment;

Fig. 5 is a structural schematic diagram of the closed state of the embodiment of the utility model.

Detailed ways

Referring to Figures 1 to 5, the utility model discloses an interlocking device for the rear door of a switchgear, including a lock bolt 1, an interlocking lever 2, an interlocking support 3, an interlocking bracket 4, a spring 5 and a grounding switch operating shaft 6 , the middle part of the interlocking support 3 is provided with a fixed installation hole 321, and the upper and lower ends of the interlocking support 3 are symmetrically provided with support connection holes 31 for installing the interlocking bracket 4, and one end of the interlocking rod 2 is connected to the interlocking support. The seat 3 is connected, the other end of the interlocking rod 2 is connected with the interlocking bracket 4, the connecting end of the interlocking rod 2 and the interlocking support 3 is integrally provided with a boss 21, and the connecting end of the interlocking rod 2 and the interlocking bracket 4 is provided There is an anti-off hole 222, the anti-off hole 222 is provided with an anti-off piece 220, the spring 5 is sleeved on the interlock rod 2, and the spring 5 is located between the interlock bracket 4 and the interlock support 3, The grounding switch operating shaft 6 is passed through the interlocking bracket 4 and the interlocking support 3, and the end of the grounding switch operating shaft 6 near the interlocking support 3 is welded with a fan-shaped plate 61, and the fan-shaped plate 61 and the interlocking rod The boss 21 on the 2 is matched, and the fan-shaped plate 61 and the boss 21 are locked together to limit the rotation of the grounding switch shaft 6 .

The fixed installation hole 321 is convenient to be fixed on the existing switch cabinet side plate column when installing the whole set of interlock; Boss 21 on the locking bar 2 cooperates and locks, and switch cabinet body earthing switch operating shaft 6 cannot rotate, and promptly earthing switch cannot be opened.

In order to make the structure of the utility model more reasonable, preferably, the lock bolt 1 in this embodiment coincides with the center line of the interlock rod 2, and one end of the lock bolt 1 is provided with a connection gap 12 matching the fan-shaped plate 61. When the switch When the back door under the cabinet is tightly closed, the lock bolt 1 contacts the boss 21 of the interlock lever 2, and pushes the interlock lever 2 to move backward, the spring 5 is compressed, and the grounding switch operating shaft 6 can rotate 90° counterclockwise, that is The grounding switch of the switch cabinet is opened, and the lower door is locked. Now the grounding switch operating shaft 6 rotates 90° clockwise, that is, the grounding switch of the switch cabinet body is closed, and the rear lower door can be opened.

The interlock support 3 is provided with a first interlock hole 312 for the interlock rod 2 to move, and the interlock support 4 is provided with a second interlock hole 41 for the interlock rod 2 to move, and the first The centerline of the interlocking hole 312 coincides with the centerline of the second interlocking hole 41 . The interlocking support 3 is provided with a third interlocking hole 313 for the movement of the grounding switch operation shaft 6, and the interlocking bracket 4 is provided with a fourth interlocking hole 42 for the movement of the grounding switch operation shaft 6, and The centerline of the third interlocking hole 313 coincides with the centerline of the fourth interlocking hole 42 . The centerline of the interlocking rod 2 and the centerline of the grounding switch operating shaft 6 are parallel to each other.

The anti-off holes 222 are screw holes, and the anti-off parts 220 are hexagon socket screws. The longitudinal section of the interlocking rod 2 is in a "T" shape. An auxiliary mounting hole 211 for fixing the interlocking rod 2 is formed on the boss 21 ; a test mounting hole 221 for testing is provided on the end of the interlocking rod 2 away from the interlocking support 3 .

In actual application, the interlock support is fixed on the existing switch cabinet side plate column, and the lock bolt is fixed on the switch cabinet door. The plate and the boss of the interlocking rod are locked together, and the operating shaft of the grounding switch of the switch cabinet body cannot be rotated, that is, the rear door of the switch cabinet is not closed, and the grounding switch cannot be opened; Contact with the platform, push the interlock lever to move backward, and compress the spring, the operating shaft of the grounding switch can rotate 90° counterclockwise, that is, the grounding switch of the switch cabinet is opened, and the lower door is locked. At this time, the operating shaft of the grounding switch rotates 90° clockwise, that is, the grounding switch of the switch cabinet body is closed, and the rear lower door can be opened. It can achieve the purpose of preventing the switch cabinet body from entering the charged interval by mistake. The structure design is reasonable, the structure is simple, the safety performance is high, the processing is convenient, and it is easy to install.

The specific description of the utility model in the foregoing embodiments is only used to further illustrate the utility model, and cannot be interpreted as limiting the protection scope of the utility model. Technical engineers in the field make some non-essential modifications to the utility model according to the content of the utility model Improvements and adjustments all fall within the protection scope of the present utility model.

Claims (8)

1. a rear door of switch cabinet interlock, comprise locking bolt (1), blocking lever (2), interlocking bearing (3), interlock bracket (4), spring (5) and earthed switch operating axis (6), it is characterized in that: described interlocking bearing (3) middle part is provided with fixed installation hole (321), interlocking bearing (3) up and down two ends is symmetrically arranged with the support connecting hole (31) for installing interlock bracket (4), described blocking lever (2) one end is connected with interlocking bearing (3), blocking lever (2) other end is connected with interlock bracket (4), described blocking lever (2) has been wholely set boss (21) with interlocking bearing (3) link, blocking lever (2) and interlock bracket (4) link are provided with anticreep hole (222), anti-falling piece (220) is provided with in described anticreep hole (222), described spring (5) is socketed on blocking lever (2), and spring (5) is positioned between interlock bracket (4) and interlocking bearing (3), described earthed switch operating axis (6) is located in interlock bracket (4) with on interlocking bearing (3), and earthed switch operating axis (6) is welded with fanning strip (61) near interlocking bearing (3) end, and this fanning strip (61) mates with the boss (21) on blocking lever (2), described fanning strip (61) and boss (21) lock rear restriction earthed switch axle (6) and rotate.

2. a kind of rear door of switch cabinet interlock according to claim 1, it is characterized in that: described locking bolt (1) overlaps with blocking lever (2) center line, locking bolt (1) one end is provided with the connection breach (12) mated with described fanning strip (61), when under switch cubicle, back door is closed, locking bolt (1) contacts with the boss (21) of blocking lever (2), and promote blocking lever (2) and move backward, described spring (5) is compressed, earthed switch operating axis (6) can rotate counterclockwise 90 ° of rear Xiamen of locking or turn clockwise 90 ° opens rear Xiamen.

3. a kind of rear door of switch cabinet interlock according to claim 2, it is characterized in that: described interlocking bearing (3) is provided with for the first interlocking hole (312) for blocking lever (2) activity, interlock bracket (4) is provided with for the second interlocking hole (41) for blocking lever (2) activity, and the center line of the center line of the first interlocking hole (312) and the second interlocking hole (41) overlaps.

4. a kind of rear door of switch cabinet interlock according to claim 3, it is characterized in that: described interlocking bearing (3) is provided with for the 3rd interlocking hole (313) for earthed switch operating axis (6) activity, interlock bracket (4) is provided with for the tetrad lockhole (42) for earthed switch operating axis (6) activity, and the center line of the 3rd interlocking hole (313) and the center line of tetrad lockhole (42) overlap.

5. a kind of rear door of switch cabinet interlock according to claim 4, is characterized in that: the center line of described blocking lever (2) and the center line of earthed switch operating axis (6) parallel to each other.

6. a kind of rear door of switch cabinet interlock according to claim 5, is characterized in that: described anticreep hole (222) is screw hole, and anti-falling piece (220) is soket head cap screw.

7. a kind of rear door of switch cabinet interlock according to claim 6, is characterized in that: described blocking lever (2) longitudinal section is in " T " character form structure.

8. a kind of rear door of switch cabinet interlock according to claim 7, is characterized in that: described boss (21) is equipped with an auxiliary mounting hole for fixing blocking lever (2) (211); Described blocking lever (2) deviate from interlocking bearing (3) end be provided with a test installing hole (221) for testing.