Removable type vacuum contactor chassis vehicle interlocking device

Abstract

The utility model provides a chassis interlocking device of a removable vacuum contactor, and belongs to the technical field of vacuum contactors. Comprising a vacuum contactor mechanism, the vacuum contactor mechanism is installed on a fixing plate in a frame, the vacuum contactor mechanism comprises a closing coil static iron core and a closing coil movable iron core, and the closing coil movable iron core is located on the upper portion of the closing coil static iron core; the position of the chassis vehicle turning plate is located on one side of the closing coil static iron core; the interlocking device is connected to one side of the shell of the closing coil static iron core; the interlocking device and the movement of the chassis truck turning plate form a transmission mechanism; the closing coil movable iron core and the static iron core are attracted to prevent the interlocking device from moving upwards and prevent the chassis truck turning plate from being turned out. When the closing coil movable iron core and the static iron core are separated, the chassis truck turning plate can be turned up normally, and the interlocking device moves upwards to be clamped between the closing coil movable iron core and the static iron core. According to the utility model, the personal safety of operators is ensured, the performance is stable, the assembly is easy, and the debugging is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum contactors, and in particular relates to a removable vacuum contactor chassis vehicle interlocking device. Background Art

[0002] High-voltage vacuum contactors use the contact and separation of the moving and static contacts of the vacuum interrupter to complete the closing and opening operations. They are used in places where normal working currents are frequently connected and disconnected. They are usually used to connect and disconnect 12KV, 7.2KV, 3.6KV AC motors with frequent start and stop of medium and high voltages at long distances, electric furnace transformers, high-voltage capacitor compensation control and other loads. The combined unit composed of components such as high-voltage current-limiting fuses is used in high-voltage switchgear as a complete set of power distribution equipment for power systems. The long mechanical life and frequent operation characteristics of vacuum contactors are unmatched by circuit breakers (mechanical holding life can reach 300,000 times, and electrical holding life can reach 500,000 times).

[0003] The high-voltage vacuum contactor body is installed on the chassis. When the high-voltage vacuum contactor is closed, in order to ensure the personal safety of the operator, the chassis cannot be shaken in and out. However, the existing chassis interlocking mechanism is installed on the opening spring shaft pin, and the interlocking position is unreliable and difficult to debug, which poses a great hidden danger to the personal safety of the operator. Therefore, it is necessary to propose improvements. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a removable vacuum contactor chassis interlocking device. The utility model aims to design an interlocking device for a vacuum contactor chassis to prevent misoperation, which can ensure the personal safety of operators, has stable performance, is easy to assemble and debug.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] Removable vacuum contactor chassis interlocking device, including:

[0007] A vacuum contactor mechanism, wherein the vacuum contactor mechanism is mounted on a fixed plate inside the frame, and the vacuum contactor mechanism comprises a closing coil static iron core and a closing coil moving iron core, wherein the closing coil moving iron core is located above the closing coil static iron core;

[0008] A chassis vehicle flap, the chassis vehicle flap is arranged on the chassis vehicle for controlling its movement, and the chassis vehicle flap is located at the lower side of the static iron core of the closing coil;

[0009] Also includes:

[0010] An interlocking device is connected to a side of the outer shell of the static iron core of the closing coil; the interlocking device and the movement of the chassis flap form a transmission mechanism; the closing coil moving iron core and the closing coil static iron core are attracted to prevent the interlocking device from moving upward and prevent the chassis flap from flipping out; when the closing coil moving iron core is separated from the closing coil static iron core, the chassis flap can flip up normally and the interlocking device moves upward under the flipping action and is stuck between the closing coil moving iron core and the closing coil static iron core to prevent closing.

[0011] Among them, the interlocking device includes a fixed block, an interlocking plate and a locking plate. The fixed block is fixed to one side of the outer shell of the static iron core of the closing coil by screw connection. The interlocking plate is an L-shaped plate structure. The vertical plate of the interlocking plate is adapted to the fixed block through a long groove and there is a movable gap between the upper and lower parts of the fixed block. An axle pin is fixed to the upper part of the vertical plate of the interlocking plate. The left end of the axle pin is used to adapt to the slot on the upper part of the static iron core of the closing coil. The locking plate is a Z-shaped plate structure. The middle part of the lock plate is rotatably connected to the fixed block, the lower part of the lock plate forms a friction connection with the interlocking plate, and the upper part of the lock plate is used to insert into the gap after the moving iron core of the closing coil and the static iron core of the closing coil are separated.

[0012] Furthermore, the middle portion of the locking plate is connected to the fixing block via a connecting pin.

[0013] Furthermore, the interlocking device also includes a torsion spring, one end of which is connected to the hole on the upper part of the lock plate, and the other end of which is connected to the connecting pin.

[0014] The advantages of this utility model compared with the prior art:

[0015] 1. This scheme is an interlocking device for preventing misoperation of a vacuum contactor chassis vehicle. The interlocking device, which is composed of a lock plate, a shaft pin, a fixing block, an interlocking plate, a torsion spring, etc., is installed on the static iron core shell of the closing coil of the vacuum contactor mechanism, and moves with the chassis vehicle flap to form a transmission mechanism. When the contactor is closed, the closing coil moving iron core is attracted with the static iron core to lock the interlocking device lock plate, so that the interlocking mechanism lock plate cannot move upward, so the chassis vehicle flap cannot be flipped out, and the chassis vehicle cannot be rocked in and out at this time; when the vacuum contactor is opened, the closing coil moving iron core is separated from the static iron core, and the chassis vehicle flap can be normally flipped up. At this time, the interlocking mechanism lock plate moves upward under the action of the chassis vehicle flap, and the chassis vehicle can be rocked in and out normally. This chassis vehicle interlocking structure has stable performance, easy assembly and debugging, and also ensures the personal safety of operators, meeting the five-prevention requirements;

[0016] 2. This solution has a simple structure and reliable installation. It can effectively protect the components in the high-voltage cabinet and the personal safety of operators, has a good anti-misoperation effect, and has high safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural front view of the interlocking device provided by the utility model when it is in the closed position;

[0018] Figure 2 A right side view of the structure of the interlocking device provided by the utility model when it is in the closed position;

[0019] Figure 3 A schematic diagram of the three-dimensional structure of the interlocking device provided by the utility model when in the closed position;

[0020] Figure 4 This is a structural front view of the interlocking device provided by the utility model when it is in the open position;

[0021] Figure 5 It is a right side view of the structure of the interlocking device provided by the utility model when it is in the open position;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the interlocking device provided by the utility model when it is in the open position. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0025] See also Figure 1-6 , describe the embodiments of the present utility model in detail.

[0026] Embodiment: A removable vacuum contactor chassis vehicle interlocking device comprises:

[0027] See also Figure 1-Figure 6 As shown, a vacuum contactor mechanism is installed on a fixed plate inside a frame, and the vacuum contactor mechanism comprises a closing coil static iron core 1 and a closing coil moving iron core 2, wherein the closing coil moving iron core 2 is located on the upper part of the closing coil static iron core 1;

[0028] The chassis vehicle flap 3 is provided on the chassis vehicle for controlling its movement, and the chassis vehicle flap 3 is located at the lower side of the closing coil static iron core 1;

[0029] It also includes: an interlocking device 4, which is connected to one side of the shell of the closing coil static iron core 1; the movement of the interlocking device 4 and the chassis vehicle flap 3 forms a transmission mechanism.

[0030] In this embodiment, when the closing coil moving iron core 2 is attracted to the closing coil static iron core 1, the interlocking device 4 can be prevented from moving upward and the chassis flap 3 cannot be flipped out, thereby ensuring that the chassis cannot shake in the closed state; when the closing coil moving iron core 2 is separated from the closing coil static iron core 1, the chassis flap 3 can be flipped up normally, and under the flipping action, the interlocking device 4 can move upward and be stuck in the gap between the closing coil moving iron core 2 and the closing coil static iron core 1, to prevent accidental closing operation; this structure separates the closing of the vacuum contactor from the shaking of the chassis, thereby ensuring safe operation in the closed state.

[0031] In a specific embodiment, see Figure 1-Figure 6 As shown, the interlocking device 4 includes a fixed block 5, an interlocking plate 6 and a locking plate 8. The fixed block 5 is fixed to one side of the outer shell of the closing coil static iron core 1 by screw connection. The interlocking plate 6 is an L-shaped plate structure. The vertical plate of the interlocking plate 6 is adapted to the fixed block 5 through a long groove and has a movable gap between the upper and lower parts of the fixed block 5. An axle pin 7 is fixed to the upper part of the vertical plate of the interlocking plate 6. The left end of the axle pin 7 is used to adapt to the slot on the upper part of the closing coil static iron core 1. The locking plate 8 is a Z-shaped plate structure. The middle part of the lock plate 8 is rotatably connected to the fixed block 5, and the lower part of the lock plate 8 forms a friction connection with the interlocking plate 6. The upper part of the lock plate 8 is used to be inserted into the gap after the closing coil moving iron core 2 and the closing coil static iron core 1 are separated.

[0032] With the above structure, when the vacuum contactor is closed, the moving iron core of the closing coil is attracted to the static iron core, locking the lock plate 8 in the interlocking device, so that the lock plate 8 cannot move upward, so the chassis vehicle flap 3 is restricted by the lower part of the lock plate 8 and cannot be flipped out. At this time, the chassis vehicle cannot be rocked in or out. Figure 1-Figure 3 As shown; when the vacuum contactor is opened, the moving iron core of the closing coil is separated from the static iron core, and the chassis vehicle flap 3 can be turned up normally at this time. At this time, the interlocking mechanism moves upward under the action of the chassis vehicle flap 3. When the chassis vehicle flap 3 turns over, it will move up against the interlocking plate 6. The interlocking plate 6 drives the lock plate 8 to rotate through the friction force, so that the upper part of the lock plate 8 enters the gap between the moving iron core and the static iron core of the closing coil, see Figure 4-Figure 6As shown, the chassis can be rocked in and out normally at this time. Through the action of the lock plate, the closing coil moving iron core and the static iron core will not be closed by mistake, thus ensuring personal safety when the chassis is rocked. When closing the circuit again, the closing coil moving iron core moves downward while pushing the shaft pin 7, and the shaft pin 7 drives the interlocking plate 6 to move downward. The interlocking plate 6 drives the lock plate 8 to rotate through friction, so that the upper part of the lock plate 8 is withdrawn from between the closing coil moving iron core and the static iron core and reset.

[0033] The above implementation structure has stable performance, easy assembly and debugging, and also ensures the personal safety of operators and meets the five-defense requirements.

[0034] In a specific implementation manner, the middle portion of the locking plate 8 is connected to the fixing block 5 via a connecting pin 9 .

[0035] The above structure can ensure that the locking plate can rotate flexibly under the support of the fixing block.

[0036] In a specific embodiment, the interlocking device 4 further includes a torsion spring 10 , one end of which is connected to a hole on the upper portion of the locking plate 8 , and the other end of which is connected to the connecting pin 9 .

[0037] Through the above structure, a torsion spring is additionally installed, and under the friction of the interlocking plate and the combined action of the torsion spring, the lock plate can be quickly reset.

[0038] The interlocking device has a simple structure and reliable installation, can effectively protect the components in the high-voltage cabinet and the personal safety of operators, has a good anti-misoperation effect, and has high safety and reliability.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Removable vacuum contactor chassis interlocking device, including: A vacuum contactor mechanism, the vacuum contactor mechanism being mounted on a fixed plate inside the frame, the vacuum contactor mechanism comprising a closing coil static iron core (1) and a closing coil moving iron core (2), the closing coil moving iron core (2) being located above the closing coil static iron core (1); A chassis vehicle flap (3), the chassis vehicle flap (3) being arranged on the chassis vehicle for controlling its movement, the chassis vehicle flap (3) being located at the lower side of the static iron core (1) of the closing coil; It is characterized by: also including: An interlocking device (4) is connected to one side of the outer shell of a closing coil static iron core (1); the interlocking device (4) and the movement of the chassis vehicle flap (3) form a transmission mechanism; the closing coil moving iron core (2) and the closing coil static iron core (1) are attracted to prevent the interlocking device (4) from moving upward and prevent the chassis vehicle flap (3) from flipping out; when the closing coil moving iron core (2) and the closing coil static iron core (1) are separated, the chassis vehicle flap (3) can be normally flipped up and the interlocking device (4) moves upward under the flipping action and is stuck between the closing coil moving iron core (2) and the closing coil static iron core (1) to prevent closing.

2. The removable vacuum contactor chassis interlocking device according to claim 1 is characterized in that: The interlocking device (4) comprises a fixed block (5), an interlocking plate (6) and a locking plate (8); the fixed block (5) is fixed to one side of the outer shell of the closing coil static iron core (1) by screw connection; the interlocking plate (6) is an L-shaped plate structure; the vertical plate of the interlocking plate (6) is adapted to the fixed block (5) through a long groove and there is a movable gap between the vertical plate of the interlocking plate (6) and the fixed block (5) above and below; an axle pin (7) is fixed to the upper part of the vertical plate of the interlocking plate (6); the left end of the axle pin (7) is used to adapt to the slot on the upper part of the closing coil static iron core (1); the locking plate (8) is a Z-shaped plate structure; the middle part of the locking plate (8) is rotatably connected to the fixed block (5); the lower part of the locking plate (8) is frictionally connected to the interlocking plate (6); and the upper part of the locking plate (8) is used to be inserted into the gap after the closing coil moving iron core (2) and the closing coil static iron core (1) are opened.

3. The removable vacuum contactor chassis interlocking device according to claim 2 is characterized in that: The middle part of the locking plate (8) is connected to the fixing block (5) via a connecting pin (9).

4. The removable vacuum contactor chassis interlocking device according to claim 3 is characterized in that: The interlocking device (4) further comprises a torsion spring (10), one end of which is connected to a hole on the upper portion of the lock plate (8), and the other end of which is connected to a connecting pin (9).

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