CN219759444U

CN219759444U - Misoperation-preventing interlocking device for grounding switch

Info

Publication number: CN219759444U
Application number: CN202321198481.2U
Authority: CN
Inventors: 黄亚平; 邓炜; 俞杰
Original assignee: Anyige Electric Industrial System Shanghai Co ltd
Current assignee: Anyige Electric Industrial System Shanghai Co ltd
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2023-09-26
Anticipated expiration: 2033-05-17

Abstract

The utility model discloses an misoperation prevention interlocking device of a grounding switch, which belongs to the technical field of switch cabinets and comprises the following components: a fixed plate, an interlocking rod, a sliding plate and a shaft sleeve; the surface of the fixed plate is provided with a D-shaped hole and is fixedly arranged between the middle partition plate and the side plate of the switch cabinet; the interlocking rod penetrates through the fixed plate and is driven by the lock hook of the rear door to axially move along the D-shaped hole; the sliding plate is fixed on the interlocking rod; the shaft sleeve is clamped on the sliding plate and is arranged in the D-shaped hole, the shape of the shaft sleeve is matched with that of the D-shaped hole, the shaft sleeve is internally sleeved with the operating shaft, and one surface of the shaft sleeve facing the D-shaped hole is provided with an arc surface; when the power is transmitted to the rear door, the lock hook assembly drives the interlocking rod to move in the direction away from the rear door, the shaft sleeve is driven to be separated from the D-shaped hole, and at the moment, the operation shaft can perform rotary opening operation; after the brake is separated, the arc surface is matched with the straight surface of the D-shaped hole, the shaft sleeve is limited by the D-shaped hole, the interlocking rod cannot move reversely, the lock hook locks the rear door, and at the moment, the rear door cannot be opened. According to the utility model, the deformation failure condition of the fixing plate with the D-shaped hole can not occur, and the operation shaft is prevented from being easily rotated, so that the safety performance is improved.

Description

Misoperation-preventing interlocking device for grounding switch

Technical Field

The utility model relates to an misoperation-preventing interlocking device of a grounding switch, and belongs to the technical field of switch cabinets.

Background

In the middle-high voltage distribution process, the switch cabinet provides a containing place for electrical equipment, and meanwhile, in order to avoid personal damage caused by an operator touching middle-high voltage by mistake, a grounding switch is added in the switch cabinet by many manufacturers, and the grounding switch is a protection device for protecting power equipment and personnel from dangerous voltages, currents, electric arcs and overvoltage in a power system.

In actual operation, the rear door of some switch cabinets cannot be linked (i.e. interlocked) with the grounding switch, and the grounding switch can still operate normally after the switch cabinet is opened, at this time, an operator cannot distinguish whether the switch cabinet is electrified or not, and potential safety hazards exist. For this reason, also appear in the prior art that cubical switchboard and earthing switch utilize interlocking device to interlock, promptly when the back door was opened by step, its interlock pole was triggered, drove the operation axle and remove along length direction, wherein the cover is equipped with the limiting plate on the operation axle, and when the protruding and spacing breach of limiting plate nest each other, when interfering spacing, the operation axle can't rotate to ensure when the back door was opened, the operator can't rotate the operation axle, and then ensures personal safety.

However, in the existing misoperation-preventing interlocking device for the grounding switch, in the process of locking the operation shaft, since the rear door is instantly opened, the transverse moving force of the rear door can directly act on the limiting plate of the operation shaft, when the transverse force frequently acts on the limiting plate, the protrusion directly acts on the notch, so that the protrusion can abrade the outer edge of the limiting notch, the outer edge of the notch part is easy to deform, the limiting notch is invalid, the limiting plate cannot be limited, at this time, the operation shaft can be easily rotated, potential safety hazards exist, and the safety performance is reduced.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the utility model provides a ground switch prevents maloperation interlock utilizes the fixed plate in D shape hole to carry out spacingly to the epaxial axle sleeve of operation, replaces with spacing breach restriction limiting plate in prior art, under the circumstances of repeatedly opening and shutting the back door, can not take place the fixed plate in D shape hole and warp the condition of inefficacy, prevents that the operation axle from being rotated easily to improve the security performance.

The technical problems to be solved by the utility model are realized by adopting the following technical scheme:

an anti-misoperation interlocking device of a grounding switch, comprising:

the surface of the fixed plate is provided with a D-shaped hole and is fixedly arranged between the middle partition plate and the side plate of the switch cabinet;

the interlocking rod penetrates through the fixed plate and is driven by the lock hook of the rear door to axially move along the D-shaped hole;

a slide plate fixed on the interlock lever;

the shaft sleeve is clamped on the sliding plate and is arranged in the D-shaped hole, the shape of the shaft sleeve is matched with that of the D-shaped hole, an operation shaft is sleeved in the shaft sleeve, and an arc surface is arranged on one surface of the shaft sleeve facing the D-shaped hole;

when the power is transmitted to the rear door, the lock hook drives the interlocking rod to move in the direction away from the rear door, the shaft sleeve is driven to be separated from the D-shaped hole, and the operation shaft can perform rotary opening operation;

after the brake is separated, the arc surface is matched with the straight surface of the D-shaped hole, the shaft sleeve is limited by the D-shaped hole, the interlocking rod cannot move reversely, the lock hook locks the rear door, and at the moment, the rear door cannot be opened.

According to the misoperation preventing interlocking device of the grounding switch, the shaft sleeve on the operation shaft is limited by the fixing plate with the D-shaped hole, the limiting plate is limited by the limiting notch in the prior art is replaced, the situation that the fixing plate with the D-shaped hole is deformed and invalid can not occur when the rear door is repeatedly opened and closed, the operation shaft is prevented from being easily rotated, and therefore safety performance is improved.

Preferably, the latch hook assembly includes:

the fixed seat is fixed on the side plate and is arranged in parallel with the interlocking rod;

the connecting plate is fixedly connected with the interlocking rod;

the pin shaft A and the pin shaft B are arranged in parallel in a penetrating manner, a fixing seat and a connecting plate are arranged on the pin shaft A in a penetrating manner, and the pressure spring is limited between the end part of the pin shaft A and the fixing seat;

the lock catch is hinged to the pin shaft B and is on the same side as the pressure spring, and the lock catch is matched with the lock tongue of the rear door;

when the lock tongue abuts against the pin shaft B, the pressure spring is compressed, the interlocking rod moves to one end far away from the rear door, the shaft sleeve is separated from the D-shaped hole and is subjected to opening operation, the lock catch is tilted to hook the lock tongue, and the rear door cannot be opened.

Preferably, a circular groove is formed in the shaft sleeve, and the sliding plate is clamped on the circular groove.

Through circular recess joint slide for the slide can drive axle sleeve lateral shifting.

Preferably, the whole L-shaped slide, its one end is the U-shaped slotted hole, U-shaped slotted hole joint is on circular recess, and the other end is fixed in on the interlock pole.

The U-shaped slotted hole is embedded in the circular groove, and the sliding plate is fixed on the interlocking rod through the bolt, so that the interlocking rod is ensured to drive the sliding plate in the moving process, and the shaft sleeve is driven to move, and vice versa.

Preferably, one end of the sliding plate, which faces the interlocking rod, is provided with a bending avoidance groove.

Because the slide is fixed to the interlock pole on, need buckle the processing to the slide, therefore set up the groove of dodging of buckling for can buckle the slide fast, avoid the slide to lead to the fracture because of stress concentration in the department of buckling.

Preferably, the fixing plate is Z-shaped, two ends of the fixing plate are provided with fixing ends, one end of the fixing plate is fixed on the middle partition plate, and the other end of the fixing plate is fixed on the side plate.

Preferably, the cross section of the operation shaft is hexagonal. The section of the inner surface of the shaft sleeve, which is nested with the shaft sleeve, is also hexagonal, and the hexagonal rod can be matched with a hexagonal operation shaft to rotate the operation shaft.

The beneficial effects of the utility model are as follows:

according to the utility model, after the rear door is closed by power transmission, the lock hook assembly drives the interlocking rod to move in the direction away from the rear door, the shaft sleeve is driven to be separated from the D-shaped hole, and the operation shaft can perform rotary opening operation; after the brake is separated, the arc surface is matched with the straight surface of the D-shaped hole, the shaft sleeve is limited by the D-shaped hole, the interlocking rod cannot move reversely, the lock hook locks the rear door, and at the moment, the rear door cannot be opened. Utilize the fixed plate in D shape hole to carry out spacingly to the epaxial axle sleeve of operation, replace with spacing breach restriction limiting plate in prior art, under the circumstances of repeatedly opening and shutting back door, the fixed plate in D shape hole deformation inefficacy condition can not take place, prevent that the operation axle from being rotated easily to improve the security performance.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a side view of the present utility model.

Fig. 3 is a schematic structural view of the sleeve according to the present utility model.

Fig. 4 is a top view of the sleeve of the present utility model.

Fig. 5 is a schematic structural view of the fixing plate of the present utility model.

FIG. 6 is a schematic view of the structure of the skateboard of the present utility model.

Fig. 7 is a schematic structural view of the latch hook assembly of the present utility model.

In the figure: 1. the device comprises a fixing plate, 11, a D-shaped hole, 111, a straight surface, 2, an interlocking rod, 3, a sliding plate, 31, a U-shaped slotted hole, 32, a bending avoidance groove, 4, a shaft sleeve, 41, a circular groove, 5, a middle partition plate, 6, a side plate, 7, an operation shaft, 8, a fixing clip, 9, a boss, 10, a fixing seat, 12, a connecting plate, 13, a pin shaft A,14, a pin shaft B,15, a pressure spring, 16, a lock catch, 17, a lock tongue, 18 and a fixing clamping plate.

Detailed Description

The utility model will be further described with reference to the following embodiments in order to make the technical means, the creation features, the achievement of the objects and the effects of the utility model easy to understand.

In the description of the present utility model, it should be understood that the terms "transverse", "longitudinal", "end", "edge", "side wall", "upper", "lower", "directly above", "surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "end", "head", "tail", etc. refer to the orientation or positional relationship based on the drawings, are merely for convenience of describing the technical solution of the present utility model and for simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Examples

As shown in fig. 1, 2 and 5, the anti-misoperation interlocking device of the grounding switch of the utility model comprises: the device comprises a fixed plate 1, an interlocking rod 2, a sliding plate 3 and a shaft sleeve 4; wherein, a D-shaped hole 11 is arranged at the center of the fixed plate 1 and is fixedly arranged between the middle baffle plate 5 and the side plate 6 of the switch cabinet through a bolt or a self-tapping screw; the interlocking rod 2 is driven by a locking hook component of the rear door, wherein the interlocking rod 2 penetrates through the fixed plate 1 and moves along the D-shaped hole 11 in the axial direction, small holes are formed in the side plate 6 and the fixed plate 1, one end of the interlocking rod 2 penetrates through the side plate 6 and the fixed plate 1, the other end of the interlocking rod 2 is connected with the locking hook component of the rear door, and the locking hook component can drive the interlocking rod 2 to move transversely; wherein, the lateral movement is defined as the lateral movement in the left-to-right or right-to-left direction in fig. 7, and the sliding plate 3 is fixed on the interlocking rod 2 by a fixing member such as a bolt or a pin; the shaft sleeve 4 is clamped on the sliding plate 3, is arranged in the D-shaped hole 11 and is matched with the D-shaped hole 11 in shape, the operating shaft 7 is sleeved in the shaft sleeve 4, and an arc surface is arranged on one surface of the shaft sleeve 4 facing the D-shaped hole 11; when the power is transmitted to the rear door, the lock hook drives the interlocking rod 2 to move in the direction away from the rear door, the shaft sleeve 4 is driven to be separated from the D-shaped hole 11, and the operation shaft 7 can perform rotary opening operation; after the brake is separated, the arc surface is combined with a straight surface 111 of the D-shaped hole 11, the shaft sleeve 4 is limited by the D-shaped hole 11, the interlocking rod 2 cannot move reversely, the lock hook locks the rear door, and at the moment, the rear door cannot be opened.

Wherein, referring to fig. 7, the latch hook assembly includes: the device comprises a fixed seat 10, a connecting plate 12, a pin A13, a pin B14 and a lock catch 16; wherein the fixing seat 10 is fixed on the side plate 6 by a screw or a bolt and is arranged in parallel with the interlocking rod 2; the connecting plate 12 and the interlocking rod 2 are fixed together through screws, wherein one end of the interlocking rod 2 is hung on the side plate 6 by a fixed clamping plate 18, a pin A13 and a pin B14 are arranged side by side up and down, firstly pass through one end of the fixed seat 10 to the other end, then pass through one end of the connecting plate 12 to the other end (the pin A13 and the pin B14 can transversely move), a pressure spring 15 is wound on the pin A13, and the pressure spring 15 is limited between the end of the pin A13 and the fixed seat 10; the lock catch 16 is hinged on the pin shaft B14 and is arranged on the same side as the pressure spring 15, the lock catch 16 is matched with the lock tongue 17 of the rear door, the lock catch 16 can buckle the lock tongue 17 after being tilted upwards, and at the moment, the rear door cannot be opened.

Specifically, when the lock tongue 17 abuts against the pin shaft B14, the compression spring 15 is compressed, the interlocking rod 2 moves to one end far away from the back door, the shaft sleeve 4 is separated from the D-shaped hole 11 and performs the opening operation (that is, the hexagonal rod is used to rotate the operation shaft 7, so that the arc surface is matched with the straight surface 111 of the D-shaped hole 11, the shaft sleeve 4 is limited by the D-shaped hole 11, the interlocking rod 2 cannot move reversely, at this time, the compression spring 15 is compressed), the lock catch 16 is tilted due to the abutting of the inclined surface of the lock catch 16 against the edge of the fixing seat 10, and hooks the lock tongue 17, and the back door cannot be opened; on the contrary, when the earthing switch is closed by the power failure operation, the shaft sleeve 4 is restored to be matched with the straight face 111 of the D-shaped hole 11 of the fixed plate 1, the special-shaped shaft sleeve 4 can be inserted into the D-shaped hole 11, the interlocking rod 2 moves reversely under the action of the elastic restoring force of the pressure spring 15, the inclined face of the lock catch 16 is far away from the fixed seat 10, so that the lock catch 16 falls until the lock catch 16 is separated from the lock tongue 17, and then the rear door can be opened. The fixed plate 1 is Z-shaped, and fixed ends are arranged at two ends of the fixed plate, wherein one end of the fixed plate is fixed on the middle partition plate 5, and the other end of the fixed plate is fixed on the side plate 6. The cross section of the operating shaft 7 is hexagonal. The inner surface section of the shaft sleeve 4 nested with the shaft sleeve is also hexagonal, and the hexagonal rod can be matched with the hexagonal operation shaft 7 to rotate the operation shaft 7.

In some embodiments, referring to fig. 3 and 4, the sleeve 4 is provided with a circular groove 41, and the sliding plate 3 is clamped on the circular groove 41. The circular groove 41 is clamped with the sliding plate 3, so that the sliding plate 3 can drive the shaft sleeve 4 to move transversely.

In some embodiments, referring to fig. 6, the sliding plate 3 is generally L-shaped, and has a U-shaped slot 31 at one end, and the U-shaped slot 31 is snapped onto the circular groove 41, and the other end is fixed to the locking lever 2. The U-shaped slot 31 is embedded in the circular groove 41, and the sliding plate 3 is fixed on the interlocking rod 2 by bolts, so that the interlocking rod 2 is ensured to drive the sliding plate 3 in the moving process, and the shaft sleeve 4 is driven to move, and vice versa.

In some embodiments, referring to fig. 6, the slide plate 3 is provided with a bend relief groove 32 at an end facing the interlock lever 2. Since the slide plate 3 is required to be bent when being fixed to the interlock lever 2, the bending avoidance groove 32 is formed so that the slide plate 3 can be rapidly bent, and breakage of the slide plate 3 due to stress concentration at the bending position is avoided.

In some embodiments, referring to fig. 1, a fixing clip 8 is disposed at one end of the interlock lever 2 near the sliding plate 3, two ends of the fixing clip 8 are fixedly mounted on the side plate 6 through fixing pins, a boss 9 is additionally disposed at the position of each fixing pin, the interlock lever 2 slides between the two bosses 9, one end of the interlock lever 2 is raised through the boss 9, and two ends of the interlock lever 2 are located on the same plane, so that the movement process of the interlock lever 2 is smoother and smoother, and noise in the movement process is reduced.

According to the misoperation preventing interlocking device for the grounding switch, the shaft sleeve 4 on the operation shaft 7 is limited by the fixing plate 1 with the D-shaped hole 11, the limiting plate is limited by the limiting notch in the prior art, deformation failure of the fixing plate 1 with the D-shaped hole 11 can not occur under the condition that the rear door is repeatedly opened and closed, and the operation shaft 7 is prevented from being easily rotated, so that the safety performance is improved.

Specific:

the interlocking device is characterized in that a Z-shaped fixing plate 1 with a D-shaped hole 11 is fixed on a middle partition plate 5 and a side plate 6 (specifically a right front side plate 6) through self-tapping screws, a special-shaped shaft sleeve 4 (which can be matched with the D-shaped hole 11) is sleeved on an operation shaft 7 of a hexagonal of a grounding switch, and a hexagonal hole is formed in the center of the shaft sleeve 4 and matched with the operation shaft 7 of the hexagonal of the grounding switch. A plane is milled on one side of the outer circle of the special-shaped shaft sleeve 4, and a D shape is formed to be matched with a D-shaped hole 11 of the fixed plate 1 when seen from the end face. The special-shaped shaft sleeve 4 is provided with a circular groove 41, a sliding plate 3 with a U-shaped slot hole 31 is embedded in the groove, the sliding plate 3 with the U-shaped slot hole 31 is L-shaped, one side of the sliding plate 3 is matched with the special-shaped shaft sleeve 4 through the U-shaped groove of the special-shaped shaft sleeve 4, and the other side of the sliding plate 3 is fixed on the interlocking rod 2. When the rear door is closed by power transmission, the interlocking rod 2 moves forwards under the action force of the rear door of the switch cabinet, the sliding plate 3 driving the U-shaped slot hole 31 also moves forwards, the U-shaped slot hole 31 of the sliding plate 3 is matched with the circular groove 41 of the special-shaped shaft sleeve 4, the special-shaped shaft sleeve 4 is driven to be separated from the D-shaped hole 11 of the fixed plate 1, and the grounding switch can perform opening operation. When the grounding switch is operated for 180 degrees to open, the special-shaped shaft sleeve 4 rotates 180 degrees along with the operation of the hexagonal rod, and at the moment, the arc surface on the special-shaped shaft sleeve 4 is matched with the straight surface 111 of the D-shaped hole 11 of the fixed plate 1, so that the shaft sleeve 4 cannot pass through the D-shaped hole 11, the problem that the rear door cannot be opened when the grounding switch is opened, and the interlocking requirement of mistakenly entering the electrified compartment is met. When the earthing switch is closed by power failure operation, the special-shaped shaft sleeve 4 is restored to be matched with the straight face 111 of the D-shaped hole 11 of the fixed plate 1, the special-shaped shaft sleeve 4 can be inserted into the D-shaped hole 11, at the moment, the interlocking part of the rear door is tripped to be separated from the interlocking rod 2, and the rear door can be opened. If the hexagonal rod of the grounding switch is operated to rotate, the hexagonal rod cannot rotate due to the matching of the one-sided surface of the special-shaped shaft sleeve 4 and the one-sided surface 111 of the D-shaped hole 11, so that the interlocking requirement that the grounding switch cannot be operated when the rear door is opened is ensured, and the personal safety is ensured.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by persons skilled in the art that the present utility model is not limited to the embodiments described above, but is capable of numerous variations and modifications without departing from the spirit and scope of the utility model as hereinafter claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An anti-misoperation interlocking device of a grounding switch, which is characterized by comprising:

the interlocking rod penetrates through the fixed plate and is driven by the lock hook component of the rear door to axially move along the D-shaped hole;

a slide plate fixed on the interlock lever;

when the power is transmitted to the rear door, the lock hook assembly drives the interlocking rod to move in the direction away from the rear door, the shaft sleeve is driven to be separated from the D-shaped hole, and at the moment, the operation shaft can perform rotary opening operation;

after the brake is separated, the arc surface is matched with the straight surface of the D-shaped hole, the shaft sleeve is limited by the D-shaped hole, the interlocking rod cannot move reversely, the locking hook component locks the rear door, and at the moment, the rear door cannot be opened.

2. The ground switch anti-misoperation interlock device as claimed in claim 1, wherein the shackle assembly comprises:

the connecting plate is fixedly connected with the interlocking rod;

3. The misoperation prevention interlocking device of a grounding switch according to claim 1, wherein the shaft sleeve is provided with a circular groove, and the sliding plate is clamped on the circular groove.

4. The interlocking device for preventing misoperation of a grounding switch according to claim 3, wherein the sliding plate is integrally L-shaped, one end of the sliding plate is a U-shaped slot, the U-shaped slot is clamped on the circular groove, and the other end of the U-shaped slot is fixed on the interlocking rod.

5. The misoperation prevention interlocking device of a grounding switch according to claim 4, wherein the end of the sliding plate facing the interlocking rod is provided with a bending avoidance groove.

6. The interlocking device for preventing misoperation of a grounding switch according to claim 1, wherein the fixing plate is zigzag, and two ends of the fixing plate are provided with fixing ends, one end of the fixing plate is fixed on the middle partition plate, and the other end of the fixing plate is fixed on the side plate.

7. The ground switch misoperation prevention interlock apparatus according to claim 1, wherein the cross section of the operating shaft is hexagonal.