Interlocking device of switch cabinet front door and operating mechanism

Abstract

The utility model relates to the field of high-voltage switch equipment, and discloses an interlocking device of a switch cabinet front door and an operating mechanism. The device is mainly composed of a baffle, a connecting rod, a support, a compressed spring, a nut I, an inner hexagon screw, a flat gasket, a connecting plate, a crank arm, a connecting shaft, a crank arm bent plate, a nut II, a hexagon screw, a pin with a hole and a cotter pin. The device can realize interlocking of the switch cabinet front door and the operating mechanism, opening and closing operation cannot be carried out on the operating mechanism when the switch cabinet front door is opened, opening and closing operation can be carried out on the operating mechanism only when the switch cabinet front door is closed, the safety protection reliability of the switch equipment is improved, and personal safety accidents caused by misoperation are avoided. The safety protection device is simple in structure, reasonable in design and high in safety protection reliability.

Description

Technical Field

[0001] The utility model relates to the field of high-voltage switchgear, in particular to an interlocking device between a front door of a switch cabinet and an operating mechanism. Background Art

[0002] High-voltage switchgear typically features disconnectors and earthing switches. Operating mechanisms are used to open and close these switches. Each operating hole in the operating mechanism corresponds to a corresponding disconnector and earthing switch, and is equipped with an operating handle. When the switchgear front door needs to be opened for maintenance and inspection, operating the disconnectors and earthing switches is strictly prohibited. Conventional methods typically employ a padlock on a baffle. After the switchgear front door is opened, the padlock is locked to secure the baffle and conceal the operating holes. However, this approach is not only cumbersome but also prone to misoperation, potentially leading to personal injury.

[0003] Therefore, based on the above problem, the utility model provides an interlocking device between a front door of a switch cabinet and an operating mechanism. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides an interlocking device between a front door of a switch cabinet and an operating mechanism.

[0005] The utility model is implemented by the following technical solution: an interlocking device for the front door of a switch cabinet and an operating mechanism, comprising a baffle, a connecting rod, a bracket, a compression spring, a connecting plate, a crank arm, a connecting shaft and a crank arm bent plate, wherein the baffle is sequentially connected to the connecting rod, the connecting plate, the crank arm, the connecting shaft and the crank arm bent plate, the bracket is a groove-shaped bent plate, wherein waist holes are provided on two sides, and a pair of through-round holes are provided on the other two sides for passing the connecting rod, and a compression spring is installed on the connecting rod in the bracket.

[0006] Preferably, the connecting rod is a stepped shaft, the small shaft end is provided with a thread, and the large shaft end is provided with a groove shape.

[0007] Preferably, the baffle is an elongated plate with one end bent and a circular hole provided on the bent surface. A plurality of circular holes cooperating with the operating holes of the operating mechanism are provided at one end of the elongated strip of the baffle.

[0008] Preferably, the threaded end of the connecting rod passes through the bracket, flat washer, compression spring, flat washer, bracket and baffle in sequence.

[0009] Preferably, a circular hole is provided at one end of the connecting plate, which cooperates with the groove of the connecting rod to form a hinge, and several circular holes are provided at the other end. Several circular holes are provided on the plate surface of one end of the crank arm, which cooperate with the several circular holes of the connecting plate to form a hinge, and a frustum is provided at the other end.

[0010] Compared with the prior art, the technical effects of the present invention are: simple structure, reasonable design, and high safety protection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 : Schematic diagram of the interlocking device structure.

[0012] Figure 2 : Partial cross-sectional view.

[0013] Figure 3 : Front installation diagram of the interlocking device.

[0014] Figure 4 : Side installation diagram of the interlocking device.

[0015] Figure 5 : Schematic diagram of the switch cabinet front door open.

[0016] Figure 6 : Schematic diagram of the switch cabinet front door closed.

[0017] Reference numerals:

[0018] 1- baffle, 2- connecting rod, 3- bracket, 4- compression spring, 5- nut I, 6- hexagon socket screw, 7- flat washer, 8- connecting plate, 9- crank arm, 10- connecting shaft, 11- crank arm bent plate, 12- nut II, 13- hexagon screw, 14- pin with hole, 15- cotter pin. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] Unless otherwise defined, technical or scientific terms used in this utility model shall have the common meanings understood by persons skilled in the art in the field to which this utility model pertains. The terms "I," "II," and similar terms used in this utility model do not denote any order, quantity, or importance, but are merely used to distinguish different components. The terms "connect," "couple," and similar terms used in this utility model are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0021] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0022] The utility model discloses an interlocking device for a front door of a switch cabinet and an operating mechanism. The utility model has a simple structure, a reasonable design and can improve the reliability of safety protection.

[0023] See also Figure 1 、 Figure 2、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 , an interlocking device between the front door of a switch cabinet and the operating mechanism, consisting of a baffle 1, a connecting rod 2, a bracket 3, a compression spring 4, a nut I 5, a hexagon socket screw 6, a flat washer 7, a connecting plate 8, a crank arm 9, a connecting shaft 10, a crank arm bent plate 11, a nut II 12, a hexagon socket screw 13, a pin with a hole 14, and a cotter pin 15; first install the bracket 3 on the switch cabinet door frame with the hexagon socket screw 6 (see Figure 2 ); Then, insert the crank arm 9 at one end of the connecting shaft 10, screw the hexagonal screw 13 into the screw hole of the crank arm 9, and fix it on the connecting shaft 10. Insert this end of the connecting shaft 9 into the hole at the corresponding position of the switch cabinet door frame, and then insert the other end of the connecting shaft 9 into the switch cabinet frame and then into the crank arm bent plate 11, screw the hexagonal screw 13 into the screw hole of the crank arm bent plate 11, and fix it on the connecting shaft 10. Insert the two hole pins 14 into the corresponding holes of the connecting shaft 10 to limit the left and right displacement of the connecting shaft, and then insert the cotter pin 15 into the hole of the hole pin 14, and break it open. Opening; connect the porous end of the connecting plate 8 to the crank arm 9 with a hexagonal screw 13, and screw in the nut II 12; after placing one end of the connecting plate 8 into the slotted end of the connecting rod 2, insert the hexagonal screw 13 to connect it, and screw in the nut II 12; after inserting the threaded end of the connecting rod 2 into the bracket 3, flat washer 7, compression spring 4, flat washer 7, bracket 3, and baffle 1 in sequence, screw in the two nuts I 5, then insert the cotter pin 15 into the corresponding hole in the connecting rod 2 and pry open the opening to limit the upward and downward movement of the connecting rod 2. After that, insert the baffle 1 of the interlocking device into the operating mechanism to complete the installation of the interlocking device;

[0024] Several holes on the connecting plate 8 and several holes on the crank arm 9 can be used to adjust the length of the lever arm, thereby adjusting the position of the baffle 2 and the operating hole of the operating mechanism; adjusting the position of the nut I5 on the connecting rod 2 can also adjust the position of the baffle 2 and the operating hole of the operating mechanism.

[0025] When the front door of the switch cabinet is closed, the door panel presses the crank arm bent plate 11, driving the connecting shaft 10 to rotate, the rotation of the connecting shaft 10 drives the crank arm 9 to rotate, the rotation of the crank arm 9 drives the connecting plate 8 to move upward, the displacement of the connecting plate 8 drives the connecting rod 2 to move upward after overcoming the spring force of the compression spring 4, the upward movement of the connecting rod 2 drives the baffle 1 to move upward, at this time, the several holes on the baffle 1 are facing the operating holes of the operating mechanism, and the operating handle can be used to open and close the operating mechanism (see Figure 5 ).

[0026] When the front door of the switch cabinet is opened, the door panel leaves the crank arm bent plate 11, the pressure of the compression spring 4 is released, the baffle 1, the connecting rod 2, and the connecting plate 8 all move downward, the connecting plate 8 drives the crank arm 9 to rotate, and the rotation of the crank arm 9 drives the connecting shaft 10 and the crank arm bent plate 11 to rotate. At this time, several holes on the baffle 1 cover the operating holes of the operating mechanism, and the operating mechanism cannot be opened or closed (see Figure 6 ).

[0027] By adopting the above structure, the interlocking of the front door of the switch cabinet and the operating mechanism can be achieved. When the front door of the switch cabinet is open, the operating mechanism cannot be opened or closed. The operating mechanism can be opened or closed only when the front door of the switch cabinet is closed, thereby improving the safety protection reliability of the switch equipment and avoiding personal safety accidents caused by misoperation.

[0028] The specific embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the scope of the present invention.

Claims

1. An interlocking device between a switch cabinet front door and an operating mechanism, characterized in that: The invention comprises a baffle (1), a connecting rod (2), a bracket (3), a compression spring (4), a connecting plate (8), a crank arm (9), a connecting shaft (10) and a crank arm bent plate (11), wherein the baffle (1) is connected to the connecting rod (2), the connecting plate (8), the crank arm (9), the connecting shaft (10) and the crank arm bent plate (11) in sequence, and the bracket (3) is a groove-shaped bent plate, wherein waist holes are provided on two sides, and a pair of through-round holes are provided on the other two sides for passing the connecting rod (2), and a compression spring (4) is installed on the connecting rod (2) in the bracket (3).

2. The interlocking device between the front door of a switch cabinet and an operating mechanism according to claim 1, characterized in that: The connecting rod (2) is a stepped shaft, with a thread provided at the small shaft end and a grooved shape provided at the large shaft end.

3. The interlocking device between the front door of a switch cabinet and an operating mechanism according to claim 2, characterized in that: The baffle (1) is a long plate with one end bent and a circular hole provided on the bent surface. A plurality of circular holes are provided on one end of the long strip of the baffle (1) for use in conjunction with the operating holes of the operating mechanism.

4. The interlocking device between the front door of a switch cabinet and an operating mechanism according to claim 3, characterized in that: The threaded end of the connecting rod (2) is passed through the bracket (3), the flat washer (7), the compression spring (4), the flat washer (7), the bracket (3) and the baffle (1) in sequence.

5. The interlocking device between the front door of a switch cabinet and an operating mechanism according to claim 4, characterized in that: A circular hole is provided at one end of the connecting plate (8) to form a hinge with the groove of the connecting rod (2), and several circular holes are provided at the other end. Several circular holes are provided on the plate surface of one end of the crank arm (9) to form a hinge with the several circular holes of the connecting plate (8), and a round table is provided at the other end.

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