Secondary reverse interlock

Abstract

The utility model discloses a secondary reverse interlock which comprises a fixed plate fixedly arranged in a switch cabinet, a main shaft is movably arranged in the fixed plate in a penetrating mode, one end of the main shaft is used for facing and abutting against a door plate of the switch cabinet, and one side of the fixed plate is provided with a locking plate in a hinged mode. The locking plate abuts against the other end of the main shaft when rotating to a set position. The interlocking structure that the locking plate and the door plate are arranged on the two sides of the main shaft is adopted, and the locking plate is controlled to lock and unlock the main shaft by driving the action of the driving plate through the action stroke of the aviation plug, so that the actions of the door plate and the handcart are controlled, and the interlocking of the aviation plug and the handcart is realized; it is ensured that the functional handcart can be switched on at the working position only when all the auxiliary loops are switched on, the interlocking structure is simple and easy to install, and the universal adaptability of the interlocking structure is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the switchgear equipment technical field relates to a secondary reverse interlock. BACKGROUND

[0002] In order to ensure the safety of switchgear equipment operation, standard mandatory requirements switchgear function handcart only when the auxiliary circuit has been connected can be in the working position closing, thereby meeting the safe and reliable power supply, the conventional switchgear equipment is usually set to the navigation plug limit interlock, for example, the handcart navigation plug interlock in Chinese patent CN201682197U, however, for the reverse navigation plug limit operation requirement of handcart, the conventional interlock structure is not applicable, and the universal adaptability has defects. SUMMARY

[0003] The utility model discloses in order to overcome the insufficient of prior art, provide a secondary reverse interlock.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A secondary reverse interlock, including the fixed plate of fixed setting in switchgear, the main shaft of movable setting in the fixed plate, one end of the main shaft is used to be towards and be opposite to the door panel of switchgear, the side of the fixed plate is hingedly arranged with the lock plate, when the lock plate rotates to the set position, with the other end of the main shaft forms opposite.

[0006] Further, the fixed plate is provided with a rotating shaft and a locking shaft, one end of the lock plate is connected with the rotating shaft, the other end of the lock plate is provided with a groove for clamping the locking shaft at the set position.

[0007] Further, the end of the locking shaft is provided with a shaft cap for abutting against the lock plate in the action direction of the main shaft.

[0008] Further, it further includes the drive plate for driving the lock plate rotation, one end of the drive plate is hingedly connected with the fixed plate, the other end of the drive plate is used for abutting or connecting with the aviation socket, the middle part of the drive plate is used for abutting with the lock plate.

[0009] Further, the other end of the drive plate is provided with an adjusting screw, and the adjusting screw is in threaded connection with the drive plate.

[0010] Further, the main shaft has a locking position and an unlocking position in the action stroke towards and away from the door panel, a spring is sleeved on the main shaft, and two ends of the spring are connected to the main shaft and the fixed plate respectively, and the spring provides the main shaft with elastic force towards the locking position.

[0011] In summary, the utility model has the advantages that:

[0012] The utility model discloses the interlocking structure of locking plate and door plate of the double side setting of main shaft, through the action stroke of aviation socket to the action drive of driving plate to control the locking and unlocking of locking plate to main shaft, thereby control the action of door plate and handcart, realize the interlocking of aviation socket to handcart, ensure that the function handcart can only be connected when auxiliary circuit is all connected in the working position and close, and the interlocking structure is simple and easy to install, makes its general adaptability is strong. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure schematic diagram of secondary reverse interlocking in switch cabinet of the utility model.

[0014] Figure 2 It is the structure schematic diagram of secondary reverse interlocking.

[0015] Figure 3 It is the section structure schematic diagram of the utility model.

[0016] Figure 4 It is Figure 2 It is the structure schematic diagram under the middle rear side view.

[0017] Figure 5 It is Figure 4 In the structure schematic diagram after the action of driving plate and locking plate, 11, instrument room partition, 12, crossbeam, 13, door plate, 14, aviation socket, 21, fixed plate, 22, main shaft, 23, spring, 24, pivot, 25, locking shaft, 26, locking plate, 261, recess, 27, driving plate, 28, adjusting screw. DETAILED DESCRIPTION

[0018] The following will be explained by specific concrete examples, and the person skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. The utility model can also be implemented or applied by another different specific embodiment, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0019] It should be noted that the diagrams provided in the following examples only illustrate the basic concept of the utility model in a schematic manner, and the diagrams only show the components related to the utility model without drawing the number, shape and size of the components during actual implementation. The shape, number and proportion of each component during actual implementation can be changed arbitrarily, and the component layout pattern can also be more complex.

[0020] All directional indications (such as up, down, left, right, front, back, transverse, longitudinal, and the like) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.

[0021] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0022] The present utility model provides a kind of secondary reverse interlocking, be provided in switchgear cabinet, for when providing locking to movable function handcart in auxiliary circuit is not connected, avoid when not being connected function handcart in working position closing, to meet the safety and reliability requirements of power supply.

[0023] Referring to Figure 1 , the secondary reverse interlocking includes a fixed plate 21, a main shaft 22, a driving plate 27, a locking plate 26, a spring 23, a locking shaft 25 and a rotating shaft 24, and the switchgear cabinet is provided with a fixed instrument room partition plate 11 and a cross beam 12, wherein the fixed plate 21 is fixedly installed on the instrument room partition plate 11, the main shaft 22 is arranged on the fixed plate 21 in a set direction, and the main shaft 22 is axially movable, the front end of the main shaft 22 penetrates the cross beam 12, and the cross beam 12 and the fixed plate 21 support and limit the movement direction of the main shaft 22, one side of the cross beam 12 is provided with a door plate 13 of the switchgear cabinet, the door plate 13 abuts against the cross beam 12 in the closed state, and the front end of the main shaft 22 abuts against the door plate 13 after penetrating the cross beam 12.

[0024] Referring to Figure 2 and Figure 3 , the spring 23 is sleeved on the outer periphery of the main shaft 22, and the two elastic ends of the spring 23 abut against the main shaft 22 and the fixed plate 21 respectively, so that the spring 23 provides a spring force in the axial direction of the main shaft 22, and the main shaft 22 includes an unlocked position and a locked position in the axial movement, in the locked position, the front end of the main shaft 22 protrudes from the cross beam 12 by a set length, so that the door plate 13 abuts against the end of the main shaft 22 and cannot be fully closed, and thus the function handcart cannot reach the working position; in the unlocked position, the front end of the main shaft 22 is retracted inside the cross beam 12, so that the door plate 13 can abut against the cross beam 12 and be fully closed, and thus the function handcart can reach the working position.

[0025] When the main shaft 22 is not subjected to other external forces, the main shaft 22 is maintained in the locked position by the spring 23.

[0026] The rotating shaft 24 is fixedly arranged on the fixed plate 21, the locking plate 26 is sleeved on the rotating shaft 24, and the locking plate 26 can rotate in a certain range with the axis of the rotating shaft 24 as the rotation center, and the locking plate 26 is arranged at the front end of the main shaft 22.

[0027] The locking shaft 25 is fixed on the fixed plate 21, when the locking plate 26 rotates downward under its own weight, the lower side of the locking plate 26 will abut against the locking shaft 25, preventing the locking plate 26 from further rotating downward, and the lower side of the locking plate 26 is provided with a groove 261 for clamping the locking shaft 25, and the end of the locking shaft 25 is provided with a shaft cap abutting against the locking plate 26 in the axial direction of the main shaft 22, providing stability and support strength to the locking plate 26 when clamped, when the locking plate 26 is clamped on the locking shaft 25, referring to Figure 3 and Figure 4 The rear end of the main shaft 22 abuts against the locking plate 26 and cannot move backward, thereby limiting the main shaft 22 to the locked position, and the door plate 13 cannot push the main shaft 22 to the unlocked position, so that the door plate 13 cannot be fully closed, and the functional trolley cannot reach the working position.

[0028] The driving plate 27 is hinged to one side of the fixed plate 21, and can rotate in the vertical direction relative to the fixed plate 21, in the upward rotation stroke of the driving plate 27, the middle part of the driving plate 27 will abut against the locking plate 26 and lift the locking plate 26 to rotate upward and disengage from the locking shaft 25, so that the abutting limit of the rear end of the main shaft 22 disappears after the locking plate 26 rotates upward, referring to Figure 5 At this time, the door plate 13 can push the main shaft 22 to move backward to the unlocked position, so that the door plate 13 can be fully closed, and the functional trolley can reach the working position.

[0029] The switchgear cabinet is also provided with an aviation socket 14, which connects the auxiliary circuit in the cabinet when connected to the cabinet, and the five-proof requirements of the switchgear cabinet include: only when the auxiliary circuit is connected, the functional trolley can be closed to the working position, therefore, the end of the driving plate 27 is arranged in the stroke of the aviation socket 14 connected to the cabinet, during the process of the aviation socket 14 connected to the cabinet, the aviation socket 14 abuts against the end of the driving plate 27, driving the driving plate 27 to rotate upward, and then lifting the locking plate 26, when the aviation socket 14 is connected to the cabinet, the locking plate 26 is lifted to cancel the limit of the main shaft 22.

[0030] Further, in order to adapt to the different heights of the aviation socket 14 caused by different circuit breakers, the end of the driving plate 27 is also provided with an adjusting screw 28, which abuts against the stroke of the aviation socket 14, the adjusting screw 28 is threadedly connected with the driving plate 27, and then the relative length can be adjusted by rotating, so as to adjust the stroke of the aviation socket 14 driving the driving plate 27.

[0031] Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

Claims

1. A secondary reverse interlock, characterized in that, The utility model relates to a kind of aviation socket locking device, including fixedly arranged in switch cabinet fixed plate (21), the main shaft (22) is movably arranged in the fixed plate (21), one end of the main shaft (22) is used to be towards and abut on the door plate (13) of switch cabinet, one side of the fixed plate (21) is hingedly provided with locking plate (26), when locking plate (26) rotates to set position, the other end of the main shaft (22) forms abutment.

2. A secondary interlock according to claim 1, wherein, The fixed plate (21) is provided with rotating shaft (24) and locking shaft (25), one end of the locking plate (26) is connected with the rotating shaft (24), the other end of the locking plate (26) is provided with recess (261) for being clamped with the locking shaft (25) in set position.

3. A secondary interlock according to claim 2, wherein, The end of the locking shaft (25) is provided with shaft cap for abutting with the locking plate (26) in the action direction of the main shaft (22).

4. A secondary interlock according to claim 2, wherein, It also includes a drive plate (27) for driving the locking plate (26) to rotate, one end of the drive plate (27) is hingedly connected with the fixed plate (21), the other end of the drive plate (27) is used for abutting or connecting with aviation socket (14), the middle part of the drive plate (27) is used for abutting with the locking plate (26).

5. A secondary interlock according to claim 4, wherein, The other end of the drive plate (27) is provided with adjusting screw (28), and the adjusting screw (28) is threadedly connected with the drive plate (27).

6. A secondary interlock according to claim 1, wherein, The main shaft (22) has a locking position and an unlocking position in the action stroke towards and away from the door plate (13), a spring (23) is sleeved on the main shaft (22), and the two ends of the spring (23) are connected to the main shaft (22) and the fixed plate (21) respectively, and the spring (23) provides the main shaft (22) with a spring force towards the locking position.

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