Interlocking device of semi-solid sealing mechanism of environment-friendly cabinet

Abstract

Provided is an interlocking device of an environment-friendly cabinet semi-solid sealing mechanism. Relates to the technical field of environment-friendly cabinets. The interlocking device is arranged on the inner side of the environment-friendly cabinet, a first operation shaft used for operating a circuit breaker and a second operation shaft used for operating a three-station mechanism are arranged in the environment-friendly cabinet, the interlocking device comprises a first interlocking plate and a second interlocking plate which are located between the first operation shaft and the second operation shaft, and a crank arm is arranged on the first operation shaft. When the circuit breaker is controlled by the first operation shaft to be switched on, the crank arm pushes the first interlocking plate upwards, and the second interlocking plate covers the second operation shaft. Kidney-shaped holes are formed in the first interlocking plate and the second interlocking plate, a plurality of limiting rods are further arranged on the inner side of the environment-friendly cabinet, elastic pressing pieces are arranged at the ends of the limiting rods, and the pressing pieces abut against the first interlocking plate and the second interlocking plate. The operation safety can be improved through the linkage effect of the first interlocking plate and the second interlocking plate.

Description

Technical Field

[0001] The present application relates to the technical field of environmental protection cabinets, and in particular to an interlocking device for a semi-sealed mechanism of an environmental protection cabinet. Background Art

[0002] The semi-sealed mechanism of the environmental protection cabinet is used for environmental protection electrical equipment installed in metal insulators or assembled into intervals in the ring network cabinet. It is widely used in urban residential areas, distribution stations of large public buildings and box-type substations. Due to the presence of high-voltage equipment in the environmental protection cabinet, when performing maintenance operations on it, it is generally necessary to ensure that the three-position mechanism cannot be operated when the circuit breaker mechanism is closed after grounding, so as to protect the equipment and personnel.

[0003] In existing related technologies, electromagnetic locks or interlocking mechanisms are generally used to prevent the disconnector from opening and closing under load. However, the structure of the electromagnetic lock is relatively complex and is easily damaged during use, especially in outdoor conditions. The Chinese patent document with authorization publication number CN221379202U discloses an interlocking mechanism for a circuit breaker and a disconnector, and specifically discloses an interlocking assembly, which includes an isolation push plate, a pressure rod, an isolation interlocking plate, and a tension spring. The isolation interlocking plate has a shielding portion at one end that cooperates with the isolation operating shaft. When the output shaft rotates to the closed position, the pressure rod drives the isolation interlocking plate to operate, and the shielding portion of the isolation interlocking plate blocks the isolation operating shaft. The isolation push plate has an interlocking portion at one end that cooperates with the closing button of the circuit breaker spring operating mechanism. When the isolation operating shaft rotates to the open position, the interlocking portion contacts the closing button, forming a limit fit between the interlocking portion and the closing button.

[0004] The above patent achieves the interlocking effect by blocking or keeping the interlocking part away from the closing button. Specifically, the interlocking part is arranged on the isolation interlocking plate, and the isolation interlocking plate is driven by the rotation of the cam. However, the isolation interlocking plate is limited by only one positioning pin during the up and down movement, which can easily cause the isolation interlocking plate to be misaligned, thereby affecting the blocking effect of the isolation interlocking plate on the closing button, and there is a risk of easily causing misoperation. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the present application provides an interlocking device for a semi-sealed mechanism of an environmental protection cabinet.

[0006] The present application is implemented using the following technical solution: an interlocking device for a semi-sealed mechanism of an environmental protection cabinet is disposed on the inner side of the environmental protection cabinet, wherein a first operating shaft for operating a circuit breaker and a second operating shaft for operating a three-position mechanism are provided in the environmental protection cabinet, including a first interlocking plate and a second interlocking plate located between the first operating shaft and the second operating shaft, the first interlocking plate and the second interlocking plate being connected to each other, a crank arm being provided on the first operating shaft, and the crank arm pushing the first interlocking plate upward when the circuit breaker is closed by the first operating shaft, and the second interlocking plate covering the second operating shaft;

[0007] The first interlock plate and the second interlock plate are both provided with waist holes extending in the vertical direction. A number of limit rods are also provided on the inner side of the environmental protection cabinet. A limit rod is passed through any of the waist holes. The end of the limit rod is provided with an elastic pressing piece, which presses the first interlock plate and the second interlock plate.

[0008] By adopting the above technical solution, the cooperation between the limiting rod and the waist hole realizes the guidance of the movement of the first interlocking plate and the second interlocking plate and the limiting effect in the vertical direction. At the same time, the elastic pressing effect of the pressing plate can play a horizontal limiting role without affecting the movement of the first interlocking plate and the second interlocking plate, thereby ensuring that the first interlocking plate and the second interlocking plate will not move in series during the movement, thereby ensuring the reliability of the interlocking operation and improving the overall safety.

[0009] Optionally, a notch is provided on the second interlocking plate, and when the second interlocking plate moves upward, the notch is located above the second operating shaft, and when the second interlocking plate moves downward, the notch is aligned with the second operating shaft.

[0010] By adopting the above technical solution, when the notch is aligned with the second operating shaft, the circuit breaker is in the open state, so that the second operating shaft can be operated through the notch. When the notch is located above the second operating shaft, the circuit breaker is in the closed state and the second interlock plate covers the second operating shaft, at which time the second operating shaft cannot be operated.

[0011] Optionally, a bottom plate is provided on the inner side of the environmental protection cabinet, the first operating shaft and the second operating shaft are both passed through the bottom plate, the first interlocking plate and the second interlocking plate are located on the outside of the bottom plate, one end of the limiting rod is connected to the bottom plate, and the other end of the limiting rod passes through the waist hole, and support plates are provided on the side of the bottom plate facing the first interlocking plate and the side of the bottom plate facing the second interlocking plate, and the first interlocking plate and the second interlocking plate are both clamped by the support plate and the pressing plate.

[0012] By adopting the above-mentioned technical solution, under the horizontal clamping action of the support plate and the pressing plate, the first interlocking plate and the second interlocking plate can slide in the vertical direction without horizontal stringing, thereby effectively improving the accuracy and stability of the second interlocking plate covering and releasing the second operating axis.

[0013] Optionally, the notch is provided at the top of the second interlocking plate, and at least one waist hole is provided in the middle of the second interlocking plate and the middle of the first interlocking plate. The waist hole extends in the vertical direction, and the limiting rod can slide up and down in the waist hole.

[0014] By adopting the above technical solution, the alignment of the notch and the second operating axis is facilitated. At the same time, providing a reasonable number of waist holes can significantly improve the stability of the first interlocking plate and the second interlocking plate during movement.

[0015] Optionally, a first connecting plate is provided on the top of the first interlocking plate, and the first connecting plate and the first interlocking plate are perpendicular to each other; a second connecting plate is provided on the bottom of the second interlocking plate, and the second connecting plate and the second interlocking plate are perpendicular to each other;

[0016] The first connecting plate and the second connecting plate are fitted together, and fixing holes are coaxially provided on the first connecting plate and the second connecting plate. Bolts are passed through the fixing holes, and the bolts are used to lock the first connecting plate and the second connecting plate.

[0017] By adopting the above technical solution, under the connection action of the first connecting plate and the second connecting plate, the first interlocking plate and the second interlocking plate form a whole, thereby ensuring that the first interlocking plate and the second interlocking plate can achieve synchronous action after the crank arm rotates.

[0018] Optionally, a limiting plate is provided at one end of the limiting rod near the waist hole, and the limiting plate and the limiting rod are connected by a pillar. The pressing piece is U-shaped, and a card slot is provided at the end of the pressing piece. The card slot is adaptively clamped on the outer side of the pillar, one side of the pressing piece abuts against the side wall of the first interlocking plate or the second interlocking plate, and the other side of the pressing piece abuts against the end of the limiting plate.

[0019] By adopting the above technical solution, when the card slot of the pressing plate is clamped on the pillar, the pressing plate has a certain elasticity due to its U-shape, thereby ensuring that under the tensioning action of the pressing plate, the first interlocking plate and the second interlocking plate will not move in the horizontal direction, thereby improving the reliability of the displacement of the first interlocking plate and the second interlocking plate.

[0020] Compared with the existing technology, the present application realizes the horizontal limiting effect of the first interlock plate and the second interlock plate by setting an elastic pressure plate without affecting the movement of the first interlock plate and the second interlock plate in the vertical direction, thereby ensuring that the second interlock plate can reliably cover the second operating axis or the notch can be reliably aligned with the second operating axis, thereby ensuring that when the circuit breaker is in the closed state, the second operating axis cannot be operated to change the state of the three-position mechanism, thereby significantly improving operational safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic three-dimensional diagram of this application;

[0022] Figure 2 yes Figure 1 The enlarged structure reference diagram at A in the middle;

[0023] Figure 3 is a side view of the present application;

[0024] Figure 4 It is a structural diagram of the first interlocking plate in this application;

[0025] Figure 5 yes Figure 4 A top view of

[0026] Figure 6 It is a structural diagram of the second interlocking plate in this application;

[0027] In the figure: 1. Environmental protection cabinet; 12. Limit rod; 121. Limit plate; 122. Pillar; 13. Pressing piece; 130. Slot; 14. Bottom plate; 140. Support plate; 2. First operating axis; 20. Crank arm; 3. Second operating axis; 4. First interlocking plate; 41. Waist hole; 42. First connecting plate; 5. Second interlocking plate; 51. Notch; 52. Second connecting plate; 520. Fixing hole. DETAILED DESCRIPTION

[0028] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] like Figure 1-6 As shown, the interlocking device of the semi-sealed mechanism of the environmental protection cabinet is arranged on the inner side of the environmental protection cabinet 1. A base plate 14 is provided in the environmental protection cabinet 1. A circuit breaker and a three-position mechanism are provided on one side of the base plate 14. A first operating shaft 2 is provided on the circuit breaker, and a second operating shaft 3 is provided on the three-position mechanism. Both the first operating shaft 2 and the second operating shaft 3 extend to the other side of the base plate 14, and the first operating shaft 2 can be used to open and close the circuit breaker, and the second operating shaft 3 can be used to adjust the knife switch position of the three-position mechanism.

[0030] A first interlocking plate 4 and a second interlocking plate 5 are provided on the other side of the bottom plate 14. The first interlocking plate 4 and the second interlocking plate 5 are located between the first operating shaft 2 and the second operating shaft 3, and the first interlocking plate 4 is located below the second interlocking plate 5. A first connecting plate 42 is provided on the top of the first interlocking plate 4, and the first connecting plate 42 and the first interlocking plate 4 are mutually perpendicular. A second connecting plate 52 is provided on the bottom of the second interlocking plate 5, and the second connecting plate 52 and the second interlocking plate 5 are mutually perpendicular. The first connecting plate 42 and the second connecting plate 52 fit together, and a plurality of fixing holes 520 are provided on each of the first connecting plate 42 and the second connecting plate 52. The fixing holes 520 on the first connecting plate 42 and the fixing holes 520 on the second connecting plate 52 are in a one-to-one corresponding and coaxial arrangement. In this way, when bolts are screwed into the corresponding fixing holes 520, the connection and fixation of the first connecting plate 42 and the second connecting plate 52 can be achieved, so that the first interlocking plate 4 and the second interlocking plate 5 can be connected as a whole. The top of the second interlock plate 5 is provided with notches 51 corresponding to the number of the second operating shafts 3. The notches 51 are provided at the top of the second interlock plate 5. A crank arm 20 is provided on the first operating shaft 2. When the circuit breaker is closed by the first operating shaft 2, the crank arm 20 rotates simultaneously with the first operating shaft 2. In this way, the crank arm 20 will form a pushing effect on the first interlock plate 4, so that the first interlock plate 4 and the second interlock plate 5 are in the upper limit position. At this time, the notches 51 will move above the second operating shaft 3, and the second interlock plate 5 will cover the second operating shaft 3, thereby ensuring that the second operating shaft 3 cannot be operated. When the circuit breaker is opened by the first operating shaft 2, the first interlock plate 4 and the second interlock plate 5 are in the lower limit position. At this time, the notches 51 will be aligned with the second operating shaft 3. In this way, the three-position mechanism can be operated by the second operating shaft 3, effectively improving the safety of the operation process.

[0031] Several limiting posts are provided within the environmental protection cabinet 1 and on the other side of the bottom plate 14. These limiting posts are located between the bottom plate 14 and the first interlocking plate 4, and between the bottom plate 14 and the second interlocking plate 5. Each of the first and second interlocking plates 4 and 5 is provided with at least one vertically extending waist hole 41, each of which is penetrated by at least one limiting post. A limiting plate 121 is provided on the outer side of the limiting post, and the sidewall of the limiting plate 121 is connected to the end of the limiting post via a support 122. A pressing piece 13 is provided between the end of the limiting column and the side wall of the limiting plate 121. The pressing piece 13 is U-shaped. Specifically, the front end of the pressing piece 13 abuts against the first interlocking plate 4 or the second interlocking plate 5, and the rear end of the pressing piece 13 is folded 180° and abuts against the limiting plate 121. In this way, the pressing piece 13 will have a certain elasticity. Furthermore, a card slot 130 is provided on the pressing piece 13, and the card slot 130 is clamped to the pillar 122. Under the action of the mutual separation elastic force generated by the front end and the rear end of the pressing piece 13, the first interlocking plate 4 and the second interlocking plate 5 can be reliably fixed between the bottom plate 14 and the limiting plate 121.

[0032] A support plate 140 is provided on the side of the bottom plate 14 facing the first interlocking plate 4 and the side of the bottom plate 14 facing the second interlocking plate 5. The first interlocking plate 4 and the second interlocking plate 5 are both clamped by the support plate 140 and the pressing plate 13. In this way, when the crank arm 20 pushes the first interlocking plate 4 and the second interlocking plate 5 to produce displacement, they can only move along the extension direction of the sliding hole (i.e., the vertical direction) and cannot move in the horizontal direction, thereby ensuring that the second interlocking plate 5 can reliably switch between the states of covering the second operating axis 3 and aligning the notch 51 with the second operating axis 3, thereby maximizing the safety of operation.

[0033] The above-mentioned embodiments are only preferred embodiments of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and replacements made by technicians in this field based on the present application shall fall within the scope of protection required by the present application.

Claims

1. An interlocking device for a semi-sealed mechanism of an environmental protection cabinet, arranged on the inner side of an environmental protection cabinet (1), wherein a first operating shaft (2) for operating a circuit breaker and a second operating shaft (3) for operating a three-position mechanism are provided in the environmental protection cabinet (1), characterized in that: The invention comprises a first interlocking plate (4) and a second interlocking plate (5) located between the first operating shaft (2) and the second operating shaft (3); the first interlocking plate (4) and the second interlocking plate (5) are connected to each other; a crank arm (20) is provided on the first operating shaft (2); when the circuit breaker is closed by controlling the first operating shaft (2), the crank arm (20) pushes the first interlocking plate (4) upward, and the second interlocking plate (5) covers the second operating shaft (3); The first interlocking plate (4) and the second interlocking plate (5) are both provided with waist holes (41) extending in the vertical direction. The inner side of the environmental protection cabinet (1) is also provided with a plurality of limiting rods (12). A limiting rod (12) is passed through any of the waist holes (41). The end of the limiting rod (12) is provided with an elastic pressing piece (13), and the pressing piece (13) presses the first interlocking plate (4) and the second interlocking plate (5).

2. The interlocking device of the semi-sealed mechanism of the environmental protection cabinet according to claim 1, characterized in that: The second interlocking plate (5) is provided with a notch (51); when the second interlocking plate (5) moves upward, the notch (51) is located above the second operating shaft (3); when the second interlocking plate (5) moves downward, the notch (51) is aligned with the second operating shaft (3).

3. The interlocking device of the semi-sealed mechanism of the environmental protection cabinet according to claim 2, characterized in that: A bottom plate (14) is provided on the inner side of the environmental protection cabinet (1), the first operating shaft (2) and the second operating shaft (3) are both passed through the bottom plate (14), the first interlocking plate (4) and the second interlocking plate (5) are located on the outer side of the bottom plate (14), one end of the limiting rod (12) is connected to the bottom plate (14), and the other end of the limiting rod (12) passes through the waist hole (41), and a support plate (140) is provided on one side of the bottom plate (14) facing the first interlocking plate (4) and the other side of the bottom plate (14) facing the second interlocking plate (5), and the first interlocking plate (4) and the second interlocking plate (5) are clamped by the support plate (140) and the pressing sheet (13).

4. The interlocking device of the semi-sealed mechanism of the environmental protection cabinet according to claim 3, characterized in that: The notch (51) is provided at the top of the second interlocking plate (5), and at least one waist hole (41) is provided in the middle of the second interlocking plate (5) and the middle of the first interlocking plate (4). The waist hole (41) extends in a vertical direction, and the limiting rod (12) can slide up and down in the waist hole (41).

5. The interlocking device of the semi-sealed mechanism of the environmental protection cabinet according to claim 3, characterized in that: A first connecting plate (42) is provided on the top of the first interlocking plate (4), the first connecting plate (42) and the first interlocking plate (4) are perpendicular to each other, and a second connecting plate (52) is provided on the bottom of the second interlocking plate (5), the second connecting plate (52) and the second interlocking plate (5) are perpendicular to each other; The first connecting plate (42) and the second connecting plate (52) are fitted together, and fixing holes (520) are coaxially arranged on the first connecting plate (42) and the second connecting plate (52). Bolts are passed through the fixing holes (520), and the bolts are used to lock the first connecting plate (42) and the second connecting plate (52).

6. The interlocking device of the semi-sealed mechanism of the environmental protection cabinet according to claim 4, characterized in that: A limiting plate (121) is provided at one end of the limiting rod (12) close to the waist hole (41), and the limiting plate (121) is connected to the limiting rod (12) through a pillar (122). The pressing piece (13) is U-shaped, and a card slot (130) is provided at the end of the pressing piece (13). The card slot (130) is adaptively clamped on the outer side of the pillar (122). One side of the pressing piece (13) abuts against the side wall of the first interlocking plate (4) or the second interlocking plate (5), and the other side of the pressing piece (13) abuts against the end of the limiting plate (121).

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