Secondary interlocking device

Abstract

The utility model discloses a secondary interlocking device, which comprises a fixed plate, an interlocking mechanism and a driving plate, the interlocking mechanism comprises an interlocking plate and an interlocking bent shaft used for locking an aviation plug, the interlocking bent shaft is connected with one end of the interlocking plate, the interlocking plate is hinged with the fixed plate, one end of the driving plate is provided with a pin shaft, and the pin shaft is connected with the interlocking plate. The fixing plate is provided with a limiting groove used for one end of the pin shaft to penetrate through. According to the utility model, the transmission combination of the driving plate, the fixing plate and the interlocking mechanism is adopted, the shaking-in and shaking-out actions of the handcart are efficiently transmitted to the interlocking mechanism, the interlocking of the aviation plug is realized, the linear action of the driving plate is converted into the rotation action of the interlocking plate and the interlocking bent shaft through the cooperation of the limiting groove and the locking groove with the pin shaft, and the interlocking of the aviation plug is realized. The transmission structure is simple and effective, the double-groove matched structure is stable, part errors, assembly errors and loosening deformation errors in long-term use are easy to control, and the interlocking effect of the aviation socket is effectively ensured for a long time.

Description

TECHNICAL FIELD

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

[0002] The high voltage switch cabinet is a common power distribution switch equipment, and at present, the selection of the high voltage switch cabinet is mostly armored movable type, and the secondary elements on the handcart are connected with the cabinet by relying on the aviation plug. As a result, the aviation plug must be fixed on the cabinet body and cannot be pulled out when it is in the working position, otherwise, many functions of the handcart will be disabled, and even worse, the handcart will be damaged, which endangers the safety of the operator and other working components of the high voltage cabinet. Therefore, the aviation plug interlocking device of the high voltage switch cabinet is particularly important.

[0003] The interlocking device of the aviation plug and the handcart disclosed in Chinese patents CN201682197U and CN107181193A is similar in form, and the movement of the handcart drives the swing rod to restrict the aviation plug handle. However, the above-mentioned patents do not fully consider the errors of the handcart and the components in the switch cabinet, the assembly error, the depth position error of the handcart in the working position, the loosening and deformation error of the components after long-term use, and the like. These errors can cause the swing rod to be unable to completely restrict the aviation plug handle, resulting in interlocking failure. UTILITY MODEL CONTENTS

[0004] The utility model discloses in order to overcome the insufficient of prior art, provide a secondary interlocking device.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A secondary interlocking device, including fixed plate, interlocking mechanism and drive plate, the interlocking mechanism includes interlocking plate and the interlocking bent axle for locking aviation plug, the interlocking bent axle is connected to one end of the interlocking plate, the interlocking plate is hinged to the fixed plate, one end of the drive plate is provided with the pin shaft, the fixed plate is provided with the limit slot for the one end of the pin shaft to pass, the interlocking plate is provided with the lock slot for the other end of the pin shaft to pass, the lock slot and the limit slot form staggered, the other end of the drive plate is provided with the baffle for being opposite to the handcart.

[0007] Further, the lock slot is a broken line structure, including first straight line segment and second straight line segment, the first straight line segment and the second straight line segment form the set angle, when the interlocking plate rotates to the set position, the first straight line segment is parallel to the limit slot.

[0008] Further, it further includes the tension spring, and the two ends of the tension spring are connected with the fixed plate and the drive plate respectively, and the tension spring forms the tension force of the drive plate moving towards the fixed plate.

[0009] Further, the fixed plate is provided with a rotating shaft, the interlocking plate is provided with a rotating hole for the rotating shaft to pass through, and the locking groove and the interlocking bent shaft are located at opposite sides of the rotating shaft.

[0010] Further, the other end of the driving plate is provided with a connecting plate, the baffle is arranged at the other end of the connecting plate, and a plurality of connecting holes for passing through bolts are arranged on the driving plate and the connecting plate.

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

[0012] The utility model discloses a transmission combination of driving plate, fixed plate and interlocking mechanism, which efficiently transmits the in-out action of the handcart to the interlocking mechanism, realizes the interlocking of the aviation plug, converts the linear action of the driving plate into the rotating action of the interlocking plate and the interlocking bent shaft through the cooperation of the limiting groove and the locking groove, and the transmission structure is simple and effective, the double-groove cooperation structure is stable, and the errors of parts, assembly errors and loosening deformation errors during long-term use are easy to control, thereby effectively ensuring the interlocking effect of the aviation socket. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure diagram of the secondary interlocking device.

[0014] Figure 2 It is a structure diagram of the fixed plate in the secondary interlocking device. Figure 1

[0015] Figure 3 It is a structure diagram of the interlocking mechanism in the secondary interlocking device. Figure 1

[0016] Figure 4 It is a structure diagram of the pin shaft in the secondary interlocking device. Figure 1

[0017] Identified in the drawing: 1, fixed plate;11, tension spring;12, rotating shaft;13, limiting groove;2, aviation socket;31, interlocking plate;32, interlocking bent shaft;33, locking groove;331, first straight line segment;332, second straight line segment;34, rotating hole;4, driving plate;41, pin shaft;5, connecting plate;6, baffle. DETAILED DESCRIPTION

[0018] ​​​The following embodiments and features in the embodiments can be combined with each other under the condition of no conflict.

[0019] It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application, and only the components related to the present application are shown in the drawings, rather than being drawn according to the number, shape and size of the components in actual implementation. The shape, number and proportion of each component in actual implementation can be arbitrarily changed, and the component layout pattern can also be more complex.

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

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

[0022] The secondary interlocking device is arranged in a switch cabinet and is used for connecting a movable functional trolley and an auxiliary circuit of the switch cabinet, so that the auxiliary circuit cannot be disconnected when the functional trolley is in a closed state at a working position, thereby meeting the safety and reliability requirements of power supply.

[0023] Referring to Figure 1 As shown in the figure, the secondary interlocking device comprises a fixed plate 1, an interlocking mechanism, a driving plate 4, a connecting plate 5 and a baffle 6. The fixed plate 1 is fixedly installed in the switch cabinet. When the aviation socket 2 is in a connected state in the switch cabinet, the aviation socket 2 is close to the front end of the fixed plate 1. The interlocking mechanism is hingedly connected to the fixed plate 1 through a rotating shaft 12, so that the interlocking mechanism can rotate relative to the fixed plate 1, thereby achieving locking / unlocking of the aviation socket 2. One end of the driving plate 4 is connected to one end of the connecting plate 5. The other end of the driving plate 4 is connected to the interlocking mechanism. The other end of the connecting plate 5 is connected to the baffle 6. The baffle 6 is used to abut against the functional trolley in the in-out stroke of the functional trolley to the switch cabinet, thereby driving the connecting plate 5 and the driving plate 4 to move.

[0024] Referring to Figure 3The interlocking mechanism includes an interlocking plate 31 and an interlocking bent shaft 32, which are fixedly connected. A rotating hole 34 for the rotating shaft 12 to pass through is provided between the interlocking plate 31 and the interlocking bent shaft 32. The interlocking plate 31 and the interlocking bent shaft 32 can rotate around the rotating shaft 12. A locking groove 33 is provided on the interlocking plate 31. A pin 41 is provided at the other end of the drive plate 4. One end of the pin 41 passes through the locking groove 33 and can move along the direction of the locking groove 33.

[0025] The locking groove 33 has a zigzag structure with a set angle, which divides the locking groove 33 into a first straight segment 331 and a second straight segment 332. A limit groove 13 is provided on the fixing plate 1, as shown in the reference. Figure 2 The limiting groove 13 has a straight structure. The other end of the pin 41 passes through the limiting groove 13 and can move along the direction of the limiting groove 13. The travel of the pin 41 in the limiting groove 13 is divided into locking travel and unlocking travel.

[0026] Reference Figure 4 The locking stroke is when the pin 41 moves simultaneously in the limiting groove 13 and the first straight segment 331, the first straight segment 331 and the limiting groove 13 are parallel. At this time, the interlocking plate 31 and the interlocking bent shaft 32 are in the first rotation position. The interlocking bent shaft 32 blocks the front end of the aviation socket 2, so that the aviation socket 2 cannot be pulled out due to the obstruction of the interlocking bent shaft 32 in the current state.

[0027] Reference Figure 1 The unlocking stroke is as follows: when the pin 41 moves from the first straight segment 331 to the second straight segment 332, as the pin 41 goes deeper into the second straight segment 332, the force formed by the pin 41 and the second straight segment 332 will cause the interlocking plate 31 and the interlocking bent shaft 32 to rotate, thereby lifting the interlocking bent shaft 32 away from the front end of the aviation socket 2. At this time, the aviation socket 2 is no longer blocked by the interlocking bent shaft 32 and can be pulled out at will.

[0028] The double straight section setting of the locking groove 33 ensures that even if the working position depth of the handcart changes due to different models, component assembly errors, or loosening and deformation errors caused by long-term use, as long as the pin 41 is kept within the first straight section 331, the locking effect on the aviation socket 2 can be maintained. It has strong adjustability and applicability.

[0029] A tension spring 11 is provided between the fixed plate 1 and the drive plate 4. The two ends of the tension spring 11 are connected to the fixed plate 1 and the drive plate 4 respectively. The tension spring 11 exerts a pulling force on the drive plate 4 to move towards the fixed plate 1. When the drive plate 4 is not subjected to other forces, that is, when the functional handcart is not rocked into the working position, the tension spring 11 pulls the drive plate 4 to move the pin 41 into the second straight segment 332, thereby maintaining the unlocked state of the aviation socket 2.

[0030] When the functional trolley is shaken into the working position, the pushing effect of the functional trolley on the baffle 6, the connecting plate 5 and the driving plate 4 makes the pin shaft 41 move to the locking stroke in the first straight section 331, so that the interlocking bent shaft 32 is lowered to form a block to the aviation socket 2, and the locking state is maintained.

[0031] Further, a plurality of bolt-connecting holes are arranged on the driving plate 4 and the connecting plate 5 respectively, and users can connect through different bolt-connecting holes to adjust the overall length of the driving plate 4 and the connecting plate 5 after connection, so that the functional trolley of various strokes on the market can be adapted.

[0032] 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 shall belong to the scope of protection of the present application.

Claims

1. A double interlock device, characterized by The utility model relates to a locking mechanism for aviation plug, including fixed plate (1), interlocking mechanism and drive plate (4), the interlocking mechanism includes interlocking plate (31) and the interlocking elbow (32) for locking aviation plug, the interlocking elbow (32) is connected to one end of interlocking plate (31), the interlocking plate (31) is hinged with fixed plate (1), one end of drive plate (4) is provided with pin shaft (41), the fixed plate (1) is provided with the limiting slot (13) for the one end of pin shaft (41) to pass through, the interlocking plate (31) is provided with the locking slot (33) for the other end of pin shaft (41) to pass through, the locking slot (33) and limiting slot (13) form stagger, the other end of drive plate (4) is provided with the baffle (6) for being opposite with handcart.

2. A double interlock according to claim 1, characterized in that The locking slot (33) is the zigzag structure, including first straight section (331) and second straight section (332), the first straight section (331) and the second straight section (332) form the set angle, when the interlocking plate (31) rotates to the set position, the first straight section (331) is parallel with the limiting slot (13).

3. A double interlock according to claim 2, wherein Also including tension spring (11), both ends of tension spring (11) are connected with fixed plate (1) and drive plate (4) respectively, and tension spring (11) forms the tension of moving towards fixed plate (1) direction to drive plate (4).

4. A double interlock according to claim 2, wherein The fixed plate (1) is provided with rotating shaft (12), the interlocking plate (31) is provided with rotating hole (34) for rotating shaft (12) to pass through, and the locking slot (33) and the interlocking elbow (32) are located at the opposite sides of rotating shaft (12) respectively.

5. A dual interlock according to claim 1, wherein, The other end of drive plate (4) is provided with connecting plate (5), the baffle (6) is arranged at the other end of connecting plate (5), and a plurality of connecting holes for passing through bolts are arranged on drive plate (4) and connecting plate (5).

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