CN217334819U - Pull-out locking and unlocking mechanism - Google Patents

Abstract

A pull-out locking and unlocking mechanism, characterized in that: including support (1001), support (1001) is fixed to be adorned on drawer bottom plate (101), and the dress of lever latch hook (1002) pivot is in on support (1001), lever latch hook (1002) are connected with torsional spring (1003), lever latch hook (1002) one end is in under torsional spring (1003) effect follow stretch into in the locking hole (1004a) on cubical switchboard median septum (1004) in via hole (101a) on drawer bottom plate (101), on device mounting panel (2) with lever latch hook (1002) one end relevant position is equipped with keeps away a hole (202) and makes the one end of lever latch hook (1002) can only be pressed when the drawer unit is in isolated position and rotate and leave locking hole (1004 a). The utility model discloses an improve the locking and unlocking mechanism that pulls out of drawer unit, further improved low-voltage switchgear's safety performance.

Description

Pull-out locking and unlocking mechanism

Technical Field

The utility model belongs to the technical field of the low-voltage switchgear, specifically say so and relate to a pull-out locking release mechanism for low-voltage switchgear drawer unit.

Background

The low-voltage switch cabinet is widely applied to power plants, substations, industrial and mining enterprises and high-rise buildings. In the field of low-voltage distribution equipment of an electric power system, a drawer type switch cabinet belongs to relatively high-grade distribution equipment and consists of a plurality of drawer functional units. The drawer functional unit is characterized in that a main functional electric device is arranged in a shell formed by a drawer mechanical structure, and the drawer mechanical structure comprises mechanisms of pushing, withdrawing, interlocking and the like, and has the characteristics of convenience in maintenance, convenience in interchange, safety, reliability and the like. The drawer of the low-voltage switch cabinet on the market at present generally adopts two propulsion modes of hand cranking and hand pulling, is used for controlling safe operation of drawer functional units in the switch cabinet from entering to the process of connecting all levels of a main circuit, and has three position states of connection, test and isolation.

At present, in the switching process of connecting, testing and isolating positions of a drawer unit of a low-voltage switch cabinet, a pull-out locking and unlocking mechanism in three position states of connecting, testing and isolating the drawer unit is complex in structure and insufficient in reliability and stability.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at be exactly to the above-mentioned pull-out locking and unlocking mechanism structure complicated that current low-voltage switchgear drawer unit connects, experimental, keeps apart three position state, the not enough defect of reliability and stability provides a pull-out locking and unlocking mechanism of cubical switchboard drawer unit, through the pull-out locking and unlocking mechanism who improves the drawer unit, has further improved low-voltage switchgear's safe handling performance.

Technical scheme

In order to realize the technical purpose, the utility model provides a pull-out locking and unlocking mechanism, its characterized in that: the utility model discloses a device installation, including the support, the support is fixed to be adorned on the drawer bottom plate, and the dress of lever latch hook pivot is in on the support, lever latch hook is connected with the torsional spring, lever latch hook one end is in follow under the torsional spring effect stretch into in the via hole on the drawer bottom plate among the lockhole on the median septum of cubical switchboard, on the device mounting panel with lever latch hook one end relevant position is equipped with keeps away a hole and makes the one end of lever latch hook just can be pressed to rotate when drawer unit is in the isolated position and leaves the lockhole.

Furthermore, the other end of the lever lock hook is provided with a pressing flat plate.

Furthermore, the lower side end of one end of the lever lock hook is provided with a locking hook, the locking hook extends into a locking hole in a partition board in the switch cabinet from a via hole in the drawer bottom board under the action of the torsion spring, and the upper side end of one end of the lever lock hook is provided with a limiting hook corresponding to a position avoiding hole arranged at a corresponding position on the device mounting plate.

Further, the lever lock hook is pivotally mounted on the bracket by a lever shaft.

Advantageous effects

The utility model provides a pair of cubical switchboard drawer unit's pull-out locking release mechanism through the pull-out locking release mechanism who improves drawer unit, has further improved low-voltage switchgear's safety performance.

Drawings

Fig. 1 is an installation schematic diagram of a drawer pull-out locking and unlocking mechanism in the embodiment of the invention.

Fig. 2 is an exploded view of the drawer pull-out locking and unlocking mechanism according to the embodiment of the present invention.

Fig. 3 is a schematic view of a lever lock hook structure in the embodiment of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Examples

As shown in fig. 1 and 2, the drawer pull-out locking and unlocking mechanism 10 includes a bracket 1001, the bracket 1001 is fixedly mounted on the drawer bottom 101, a lever locking hook 1002 is pivotally mounted on the bracket 1001, in this embodiment, the lever locking hook 1002 is pivotally mounted on the bracket 1001 by a lever shaft 1006, the lever locking hook 1002 is connected with a torsion spring 1003, and the torsion spring 1003 is mounted on the lever shaft 1006 to abut against the lever locking hook 1002. One end of the lever locking hook 1002 extends into a locking hole 1004a on a partition 1004 in the switch cabinet from a through hole 101a on the drawer bottom plate 101 under the action of the torsion spring 1003, and a position avoiding hole 202 is arranged at a position on the device mounting plate 2 corresponding to one end of the lever locking hook 1002, so that one end of the lever locking hook 1002 can be pressed to rotate away from the locking hole 1004a only when the drawer unit is at an isolation position. More specifically, as shown in fig. 3, a lower end of one end of the lever lock hook 1002 is provided with a locking hook 1002a, the locking hook 1002a extends into a locking hole 1004a on a partition board 1004 in the switch cabinet from a through hole 101a on the drawer bottom board 101 under the action of the torsion spring 1003, and an upper end of one end of the lever lock hook 1002 is provided with a limiting hook 1002b corresponding to a position avoiding hole 202 arranged at a corresponding position on the device mounting board 2. The other end of the lever locking hook 1002 is provided with a pressing plate 1005.

When the breaker is opened and the drawer unit is at the connection and test position, one end of the lever locking hook 1002 extends into a locking hole 1004a on a partition board 1004 in the switch cabinet from a via hole 101a on the drawer bottom board 101 under the action of the torsion spring 1003, and because the device mounting board 2 blocks one end of the lever locking hook 1002, one end of the lever locking hook 1002 cannot be pulled out from the locking hole 1004a, and the drawer unit cannot be pulled out from the switch cabinet body. Only when the device mounting plate 2 is moved to the isolation position, the one end of the lever lock hook 1002 can be pressed and rotated out of the locking hole 1004a into the clearance hole 202, and the drawer unit can be pulled out of the switch cabinet. The specific motion process is as follows: when the circuit breaker is in a connection and test position state, the locking hook 1002a at one end of the lever locking hook 1002 extends into the locking hole 1004a on the partition board 1004 in the switch cabinet from the through hole 101a on the drawer bottom board 101 under the action of the torsion spring 1003, the avoiding hole 202 is not positioned above the limiting hook 1002b, when the pressing plate 1005 is pressed down, the limiting hook 1002b can abut against the bottom surface of the device mounting board 2, the locking hook 1002a is still in the locking hole 1004a, so that the drawer unit cannot be pulled out, when the circuit breaker is in an isolation position state, the avoiding hole 202 moves to the position above the limiting hook 1002b, the pressing plate 1005 is pressed down, the limiting hook 1002b is inserted into the avoiding hole 202, the locking hook 1002a is moved out of the locking hole 1004a, and the drawer unit can be pulled out.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (4)

1. A pull-out locking and unlocking mechanism, characterized in that: the device mounting plate comprises a support (1001), the support (1001) is fixedly mounted on a drawer bottom plate (101), a lever locking hook (1002) is pivotally mounted on the support (1001), the lever locking hook (1002) is connected with a torsion spring (1003), one end of the lever locking hook (1002) extends into a locking hole (1004a) in a partition plate (1004) in a switch cabinet from a through hole (101a) in the drawer bottom plate (101) under the action of the torsion spring (1003), and a position avoiding hole (202) is formed in a position, corresponding to one end of the lever locking hook (1002), on a device mounting plate (2) so that one end of the lever locking hook (1002) can be pressed to rotate away from the locking hole (1004a) only when a drawer unit is located at an isolation position.

2. A pull-out lock release mechanism as claimed in claim 1, wherein: the other end of the lever lock hook (1002) is provided with a pressing flat plate (1005).

3. A pull-out lock release mechanism as claimed in claim 1, wherein: the lower side end of one end of the lever locking hook (1002) is provided with a locking hook (1002a), the locking hook (1002a) extends into a locking hole (1004a) in a partition board (1004) in the switch cabinet from a through hole (101a) in a drawer bottom board (101) under the action of a torsion spring (1003), and the upper side end of one end of the lever locking hook (1002) is provided with a limiting hook (1002b) corresponding to a position avoiding hole (202) arranged at a corresponding position on the device mounting board (2).

4. A pull-out lock release mechanism as claimed in claim 1, wherein: the lever lock hook (1002) is pivotally mounted on the bracket (1001) by a lever shaft (1006).

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