Switch cabinet interlocking mechanism

Abstract

The utility model belongs to the technical field of switch cabinets, and particularly relates to a switch cabinet interlocking mechanism, which comprises a switch cabinet, a trigger box, a linkage piece, a trigger piece and a circuit breaking component, the switch cabinet comprises a cabinet body and a cabinet door, and the cabinet door is arranged on the front side of the cabinet body; the trigger box is arranged on the right side wall of an inner cavity of the cabinet body and comprises a box body, a sliding rod and sliding grooves, the vertical sliding rod is arranged in the center of the inner cavity of the box body, and the sliding grooves are formed in the rear ends of the left side wall and the right side wall of the box body; the linkage piece is arranged on the sliding grooves, the linkage piece comprises a sliding block, a lower slope block and a connecting rod, the sliding block is inserted into the sliding grooves in the two sides in a penetrating mode, the lower slope block located in the box body is arranged at the top of the sliding block, and the connecting rod is hinged to the right end of the sliding block; the outwards-moving linkage piece pulls the pull rod of the knife switch to open the circuit of the knife switch, so that the circuit is disconnected after the cabinet door is opened, the electricity utilization safety is guaranteed, the structure is simple and reliable, and the problem of fatigue and looseness of the steel wire rope is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to an interlocking mechanism for a switch cabinet. Background Art

[0002] Switchgear is an electrical equipment whose main function is to open and close, control and protect electrical equipment during the process of power generation, transmission, distribution and energy conversion in the power system.

[0003] To ensure the safety of electricity use, the internal circuit needs to be disconnected when the cabinet door is opened for maintenance. For this purpose, an interlocking mechanism is usually used. Traditional interlocking mechanisms are usually implemented using wire ropes, but wire ropes are prone to fatigue and loosening after long-term use, affecting the safe maintenance of the switch cabinet.

[0004] To this end, the present application proposes a switch cabinet interlocking mechanism. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above problems and / or the problems existing in the existing switch cabinet interlocking mechanism, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a switch cabinet interlocking mechanism, in which the outward-moving linkage part pulls the pull rod of the knife switch to open the circuit, thereby achieving the effect of disconnecting the circuit after the cabinet door is opened, ensuring the safety of electricity use, with a simple and reliable structure, and avoiding the problem of fatigue and loosening of the wire rope.

[0008] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0009] A switch cabinet interlocking mechanism, comprising:

[0010] The switch cabinet comprises a cabinet body and a cabinet door, wherein the cabinet door is arranged at the front side of the cabinet body;

[0011] A trigger box is arranged on the right side wall of the inner cavity of the cabinet, and the trigger box comprises a box body, a slide rod and a slide groove. A vertical slide rod is arranged at the center of the inner cavity of the box body, and slide grooves are arranged at the rear ends of the left and right side walls of the box body;

[0012] A linkage member is arranged on the slide slot, and the linkage member includes a slider, a lower slope block and a connecting rod. The slider is inserted into the slide slots on both sides, a lower slope block located in the box body is arranged on the top of the slider, and the right end of the slider is hinged to the connecting rod;

[0013] A triggering member is arranged on the slide bar, and the triggering member comprises a counterweight block, a sliding hole and an upper slope block. The counterweight block is connected to the slide bar through the sliding hole, and an upper slope block corresponding to the lower slope block is arranged at the rear side of the bottom of the counterweight block;

[0014] The circuit breaker component is arranged on the rear side wall of the cabinet, and the circuit breaker component includes a switch and a pull rod. The switch is provided with a pull rod hinged to the connecting rod.

[0015] As a preferred solution of the switch cabinet interlocking mechanism described in the utility model, a spring sleeved on a slide rod is arranged on the top of the counterweight block, and the upper and lower ends of the spring are in contact with the inner wall of the box body and the counterweight block respectively.

[0016] As a preferred solution of the switch cabinet interlocking mechanism described in the utility model, wherein: a ball is arranged on the inclined surface of the upper ramp block.

[0017] As a preferred solution of the switch cabinet interlocking mechanism described in the utility model, when the upper slope block is located at the upper end of the lower slope block, the knife is in a closed state, and when the upper slope block is located at the lower end of the lower slope block, the knife is in an open state.

[0018] As a preferred solution of the switch cabinet interlocking mechanism described in the utility model, wherein: when the knife is in an open circuit state, an end of the connecting rod close to the knife is higher than an end close to the slider.

[0019] As a preferred solution of the switch cabinet interlocking mechanism described in the utility model, wherein: a cabinet lock connected to the cabinet body is arranged on the cabinet door.

[0020] As a preferred solution of the switch cabinet interlocking mechanism described in the utility model, wherein: connecting plates are arranged on both the left and right sides of the box body, and connecting holes are opened on the connecting plates.

[0021] Compared with the prior art: when the cabinet door is opened, the utility model has no obstruction on the outside of the sliding block, and the counterweight block can fall under the weight. The falling counterweight block squeezes the linkage part through the slope, causing the linkage part to move outward. The outward-moving linkage part pulls the pull rod of the knife switch to open the circuit, thereby achieving the effect of disconnecting the circuit after the cabinet door is opened, ensuring the safety of electricity use, with a simple and reliable structure, and avoiding the problem of fatigue and loosening of the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0023] Figure 1 This is a schematic diagram of the shaft side structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the internal connection structure of the trigger box of the utility model when the switch is in the closed state;

[0025] Figure 3 This is a schematic diagram of the structure of the trigger box of the utility model;

[0026] Figure 4 This is a schematic diagram of the linkage structure of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the trigger member of the utility model.

[0028] In the figure: 100 switch cabinet, 110 cabinet body, 120 cabinet door, 130 cabinet lock, 200 trigger box, 210 box body, 220 slide bar, 230 slide groove, 240 connecting plate, 250 connecting hole, 300 linkage part, 310 slider, 320 lower slope block, 330 connecting rod, 400 trigger part, 410 counterweight block, 420 slide hole, 430 upper slope block, 440 spring, 450 ball bearing, 500 circuit breaker, 510 knife switch, 520 pull rod. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0031] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0032] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] The utility model provides a switch cabinet interlocking mechanism. When the cabinet door is opened, the sliding rod is not blocked outside, and the counterweight block can fall under the weight. The falling counterweight block squeezes the linkage part through the slope, so that the linkage part moves outward. The linkage part that moves outward pulls the pull rod of the switch knife to open the circuit, thereby achieving the effect of disconnecting the circuit after the cabinet door is opened, ensuring the safety of electricity use, with a simple and reliable structure, and avoiding the problem of fatigue and loosening of the wire rope. Please refer to Figure 1-Figure 5 , including: a switch cabinet 100, a trigger box 200, a linkage member 300, a trigger member 400 and a circuit breaker component 500.

[0034] The switch cabinet 100 includes a cabinet body 110 and a cabinet door 120 , and the cabinet door 120 is arranged at the front side of the cabinet body 110 ;

[0035] The cabinet door 120 is a hinged structure. Figure 1 As shown, the door is opened from the right side of the cabinet 110.

[0036] The trigger box 200 is arranged on the right side wall of the inner cavity of the cabinet 110. The trigger box 200 includes a box body 210, a slide bar 220 and a slide groove 230. A vertical slide bar 220 is arranged at the center of the inner cavity of the box body 210, and a slide groove 230 is arranged at the rear ends of the left and right side walls of the box body 210.

[0037] The front end of the box body 210 is open, and the opening is attached to the right side wall of the inner cavity of the cabinet body 110 to achieve structural closure after installation. The sliding rod 220 is a smooth round rod.

[0038] The linkage member 300 is arranged on the slide groove 230, and the linkage member 300 includes a slider 310, a lower slope block 320 and a connecting rod 330. The slider 310 is inserted into the slide grooves 230 on both sides, and the lower slope block 320 located in the box body 210 is arranged on the top of the slider 310. The right end of the slider 310 is hinged to the connecting rod 330;

[0039] The slider 310 can slide freely in the slide groove 230 horizontally. After sliding left and right, the lower slope block 320 contacts the inner wall of the box body 210 for limiting. The lower slope block 320 adopts Figure 2 Figure 4 The triangle block shown has the slope located at the upper right position.

[0040] The trigger member 400 is disposed on the slide bar 220. The trigger member 400 includes a counterweight block 410, a slide hole 420 and an upper slope block 430. The counterweight block 410 is connected to the slide bar 220 through the slide hole 420. The upper slope block 430 corresponding to the lower slope block 320 is disposed at the rear side of the bottom of the counterweight block 410.

[0041] The counterweight block 410 can slide freely on the slide bar 220 through the slide hole 420, and the upper ramp block 430 is as follows: Figure 2 Figure 5 The triangular block shown has an inclined surface located at the lower left position. When the counterweight block 410 falls under the weight, the upper slope block 430 presses down the lower slope block 320, prompting the lower slope block 320 to drive the linkage member 300 to move left. Conversely, when the slider 310 moves right, the lower slope block 320 squeezes the upper slope block 430, causing the upper slope block 430 to move upward.

[0042] The circuit breaker component 500 is disposed on the rear side wall of the cabinet 110 , and the circuit breaker component 500 includes a switch blade 510 and a pull rod 520 . The switch blade 510 is provided with the pull rod 520 hinged to the connecting rod 330 ;

[0043] Among them, the pull rod 520 of the knife switch 510 can move with the connecting rod 330 of the linkage 300, and the connecting rod 330 drives the pull rod 520 to flip to realize the opening and closing of the knife switch 510. Compared with the traditional circuit breaker, the circuit breaker cannot replace the knife switch because the two are essentially different. The circuit breaker cannot guarantee complete disconnection of the power supply (especially after a short circuit fault occurs, the contacts may be welded).

[0044] Since the counterweight 410 needs to be weighed and fall, the friction force is used to squeeze the linkage 300 to move. If the friction resistance is large, the counterweight 410 cannot fall in time. Therefore, a spring 440 sleeved on the slide bar 220 is provided on the top of the counterweight 410, and the upper and lower ends of the spring 440 are in contact with the inner wall of the box body 210 and the counterweight 410 respectively.

[0045] like Figure 2 As shown in , the knife switch 510 is in a closed state at this time, and the spring 440 is in a compressed state. The counterweight block 410 will fall rapidly under the rebound action of the spring 440, driving the linkage member 300 to move rapidly, thereby realizing the rapid disconnection of the knife switch 510.

[0046] Similarly, if the friction resistance is large, the counterweight block 410 cannot fall in time. For this reason, a ball 450 is arranged on the inclined surface of the upper ramp block 430 to change the contact friction into rolling friction, reduce the friction resistance, and reduce the influence of friction on the movement of the linkage 300.

[0047] Since it is necessary to ensure that the circuit is disconnected when the cabinet door 120 is opened and the circuit is connected when the cabinet door 120 is closed, when the upper ramp block 430 is located at the upper end of the lower ramp block 320, the knife 510 is in a closed state, and when the upper ramp block 430 is located at the lower end of the lower ramp block 320, the knife 510 is in an open state, so that the cabinet door 120 acts as an external power structure, and the linkage part 300 is driven to move by opening and closing the cabinet door 120, thereby changing the relative positions of the upper ramp block 430 and the lower ramp block 320.

[0048] Due to the hinge structure, the connecting rod 330 not only needs to pull open the pull rod 520, but also needs to push up the pull rod 520 to close the gate 510. To this end, when the gate 510 is in the open state, the end of the connecting rod 330 close to the gate 510 is higher than the end close to the slider 310, so that when the connecting rod 330 moves to the right, it can provide support force to the pull rod 520 to the upper right, so that the pull rod 520 flips to the upper right to close the gate 510.

[0049] Since the cabinet door 120 itself will be pushed by the linkage member 300 , in order to ensure the closing stability of the cabinet door 120 , a cabinet lock 130 connected to the cabinet body 110 is provided on the cabinet door 120 , and the cabinet door 120 is locked to the cabinet body 110 through the cabinet lock 130 .

[0050] Since the box body 210 needs to be installed inside the cabinet 110 , connection plates 240 are provided on both sides of the box body 210 . Connection holes 250 are provided on the connection plates 240 . Bolts are passed through the connection holes 250 to install the box body 210 on the cabinet 110 .

[0051] In specific use, when the cabinet door 120 is closed, the lower slope block 320 of the linkage member 300 is located on the right side of the box body 210 (close to the gate 510), the counterweight block 410 is located at the upper end of the lower slope block 320, the spring 440 is in a compressed state, and the pull rod 520 is closed on the gate 510, forming a passage state;

[0052] After the cabinet door 120 is opened, the left end limit of the slider 310 of the linkage member 300 disappears. At this time, the spring 440 rebounds, causing the counterweight block 410 to fall. The falling counterweight block 410 presses down the lower slope block 320 through the upper slope block 430, causing the lower slope block 320 to drive the linkage member 300 to move left. The linkage member 300 that moves left pulls the pull rod 520 through the connecting rod 330 to disconnect the circuit.

[0053] When the cabinet door 120 is closed again, the cabinet door 120 presses the slider 310 of the linkage member 300 to move the linkage member 300 to the right. The linkage member 300 that moves to the right pushes the pull rod 520 through the connecting rod 330 to close the knife 510.

[0054] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A switch cabinet interlocking mechanism, characterized in that: include: A switch cabinet (100) comprises a cabinet body (110) and a cabinet door (120), wherein the cabinet door (120) is arranged on the front side of the cabinet body (110); A trigger box (200) is arranged on the right side wall of the inner cavity of the cabinet (110), the trigger box (200) comprising a box body (210), a slide rod (220) and a slide groove (230), a vertical slide rod (220) is arranged at the center of the inner cavity of the box body (210), and the slide groove (230) is provided at the rear ends of the left and right side walls of the box body (210); A linkage member (300) is arranged on the slide groove (230), and the linkage member (300) comprises a slider (310), a lower slope block (320) and a connecting rod (330). The slider (310) is inserted into the slide grooves (230) on both sides, and a lower slope block (320) located in the box body (210) is arranged on the top of the slider (310). The right end of the slider (310) is hinged to the connecting rod (330); A trigger member (400) is arranged on the slide bar (220), the trigger member (400) comprises a counterweight block (410), a slide hole (420) and an upper slope block (430), the counterweight block (410) is connected to the slide bar (220) through the slide hole (420), and an upper slope block (430) corresponding to the lower slope block (320) is arranged at the rear side of the bottom of the counterweight block (410); The circuit breaker component (500) is arranged on the rear side wall of the cabinet (110), and the circuit breaker component (500) comprises a switch blade (510) and a pull rod (520). The switch blade (510) is provided with a pull rod (520) hinged to the connecting rod (330).

2. A switch cabinet interlocking mechanism according to claim 1, characterized in that: A spring (440) sleeved on the slide bar (220) is arranged on the top of the counterweight block (410), and the upper and lower ends of the spring (440) are in contact with the inner wall of the box body (210) and the counterweight block (410) respectively.

3. A switch cabinet interlocking mechanism according to claim 2, characterized in that: A ball bearing (450) is arranged on the inclined surface of the upper ramp block (430).

4. A switch cabinet interlocking mechanism according to claim 1, characterized in that: When the upper ramp block (430) is located at the upper end of the lower ramp block (320), the knife gate (510) is in a closed state; when the upper ramp block (430) is located at the lower end of the lower ramp block (320), the knife gate (510) is in an open state.

5. A switch cabinet interlocking mechanism according to claim 4, characterized in that: When the knife gate (510) is in an open circuit state, an end of the connecting rod (330) close to the knife gate (510) is higher than an end close to the sliding block (310).

6. A switch cabinet interlocking mechanism according to claim 1, characterized in that: The cabinet door (120) is provided with a cabinet lock (130) connected to the cabinet body (110).

7. A switch cabinet interlocking mechanism according to claim 1, characterized in that: The box body (210) is provided with connecting plates (240) on both left and right sides, and the connecting plates (240) are provided with connecting holes (250).

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