Mechanical locking device of dual-power change-over switch

Abstract

The utility model discloses a mechanical locking device of a dual-power change-over switch, which relates to the technical field of mechanical locking equipment, and comprises an installation box, one side of the installation box is fixedly connected with an equipment main body, one side of the equipment main body is provided with a plurality of opening and closing switches, and the bottom of the installation box is provided with an anti-closing assembly. And a plurality of stabilizing assemblies are arranged on one side of the mounting box. According to the scheme, an anti-closing assembly is arranged, a transmission gear drives a movable lead screw to rotate through a connecting shaft, the movable lead screw drives a connecting block and a clamping plate to move through a lead screw base, and a strong spring and a telescopic rod are matched, so that a movable rack can move for the second time; the rotation stroke of the transmission gear is driven twice, so that the movement stroke of the clamping plate just meets the limiting requirement of the third opening and closing switch through transmission, the third opening and closing switch cannot be closed by mechanical locking when any opening and closing switch is closed, the overcurrent fault occurring during bus loop closing operation is effectively avoided, and safe and stable operation of a field station alternating current feeder is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical locking equipment technical field, more specifically, relate to a mechanical locking device of double power supply change over switch. BACKGROUND

[0002] The mechanical locking device of double power supply change over switch generally refers to the device used to ensure that only one power supply can be connected to the load when switching power supply. This device is usually used in power systems to ensure that both power supplies are not connected to the load at the same time when switching power supply, thereby avoiding damage to equipment or causing safety hazards.

[0003] The utility model discloses a ring network cabinet double power supply mechanical locking device in Chinese patent application number: CN202222545398. X, including the first locking mechanism for locking the second power supply switch driven by the first power supply switch and the second locking mechanism for locking the first power supply switch driven by the second power supply switch, the first locking mechanism includes a first drive unit and a first control lever movably arranged between the first power supply switch and the second power supply switch, and the first power supply switch is operated to engage the first drive unit to drive the first control lever to lock the second power supply switch, so that it cannot be operated. The second locking mechanism includes a second drive unit and a second control lever movably arranged between the first power supply switch and the second power supply switch, and the second power supply switch is operated to engage the second drive unit to drive the second control lever to lock the first power supply switch, so that it cannot be operated. Using the utility model, the technical problems of large assembly difficulty, maintenance, low reliability and high cost caused by complex structure of the prior art can be solved, but in the application of the mechanical locking device of double power supply change over switch, due to the requirement of the equipment, at most two power supply switches can be closed in actual application. If three power supply switches are closed at the same time, the equipment will malfunction, so it needs to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a mechanical locking device of double power supply change over switch, which can realize the function of mechanically locking the third power supply switch when any two power supply switches are closed.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a mechanical locking device of double power supply change over switch, comprising: a mounting box, the mounting box is fixedly connected with a device main body on one side, a plurality of opening and closing switches are arranged on one side of the device main body, a closing prevention assembly is arranged at the bottom of the mounting box, and a plurality of stabilizing assemblies are arranged on one side of the mounting box.

[0006] The anti-closing assembly comprises a plurality of moving lead screws, and a connecting shaft is fixedly connected between two adjacent moving lead screws, one end of the moving lead screw and one end of the connecting shaft are both rotatably connected to one side of the inner wall of the mounting box, a lead screw seat is threadedly connected to the outer surface of the moving lead screw, the end of the lead screw seat away from the moving lead screw extends to the outside of the mounting box, a through slot is formed in the bottom of the mounting box, the moving lead screw is slidably connected in the through slot, a connecting block is fixedly connected to one side of the lead screw seat, and a clamping plate is fixedly connected to one side of the connecting block, the clamping plate is movable and can limit the clamping brake.

[0007] Further, a transmission gear is fixedly connected to the outer surface of the connecting shaft, a moving rack is engaged on one side of the transmission gear, a sliding rod is fixedly connected to one end of the moving rack, the sliding rod extends to the outside of the mounting box at one end, a sliding groove is formed at the end of the sliding rod away from the moving rack, and a telescopic rod is slidably connected in the sliding groove, a strong spring is fixedly connected between the telescopic rod and the inner wall of the sliding groove, and a fitting plate is fixedly connected to the other end of the telescopic rod.

[0008] Further, a reset spring is sleeved on the outer surface of the sliding rod, and the reset spring is fixedly connected to one side of the fitting plate and the bottom of the inner wall of the mounting box.

[0009] Further, a fixed sliding rod is fixedly connected to the top of the inner wall of the mounting box, and a sliding hole is formed in the top of the moving rack.

[0010] Further, the stable assembly comprises a fixing piece, one side of the fixing piece is fixedly connected to one side of the mounting box, a lifting lead screw is rotatably connected to one side of the fixing piece, a limiting plate is threadedly connected to the outer surface of the lifting lead screw, and a knob is fixedly connected to one end of the lifting lead screw extending to the other side of the fixing piece.

[0011] Further, a plurality of sliding blocks are fixedly connected to one side of the mounting box, a sliding groove is formed in one side of the limiting plate, and the sliding groove is slidably connected with the sliding blocks.

[0012] Compared with the prior art, the beneficial effects of the present scheme are as follows:

[0013] 1、The scheme is characterized in that the anti-closing assembly is arranged, when the opening and closing gates are pushed, the opening and closing gates are moved by the sliding rod driven by the sticking plate, the sliding rod drives the transmission gear to rotate by the moving rack, the transmission gear drives the moving lead screw to rotate by the connecting shaft, the moving lead screw drives the connecting block and the clamping plate to move by the lead screw seat, and the moving rack can be moved twice by the cooperation of the strong spring and the telescopic rod, so that the moving stroke of the clamping plate is just satisfied with the limiting of the third opening and closing gate through the transmission of the rotating stroke of the transmission gear twice, so that when any opening and closing gate is closed, the third opening and closing gate is mechanically locked and cannot be closed, the overcurrent fault during the bus loop operation is effectively avoided, and the safe and stable operation of the station AC feeder is ensured.

[0014] 2、The scheme is characterized in that the stable assembly is arranged, when the two opening and closing gates are pushed, the worker rotates the knob, the knob drives the lifting lead screw to rotate, the lifting lead screw drives the limiting plate to slide downwards, so that the limiting plate limits the opening and closing gate, the power-off caused by accidental touch reset of the opening and closing gate is avoided, and the stability of the equipment connection is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic diagram for embodying the utility model;

[0016] Figure 2 It is an enlarged structure schematic diagram of part A for embodying the utility model in Figure 1 ;

[0017] Figure 3 It is a part of three-dimensional structure schematic diagram for embodying the anti-closing assembly of the utility model;

[0018] Figure 4 It is an enlarged structure schematic diagram of part B for embodying the utility model in Figure 3 ;

[0019] Figure 5 It is a three-dimensional split structure schematic diagram for embodying the sliding rod of the utility model.

[0020] In the drawing:

[0021] 1, equipment main body;2, stable assembly;201, knob;202, fixed part;203, lifting lead screw;204, limiting plate;205, sliding block;206, sliding groove;3, anti-closing assembly;301, sticking plate;302, sliding rod;303, reset spring;304, connecting block;305, clamping plate;306, connecting shaft;307, lead screw seat;308, moving lead screw;309, fixed sliding rod;310, transmission gear;311, moving rack;312, strong spring;313, telescopic rod;4, opening and closing gate;5, mounting box. DETAILED DESCRIPTION

[0022] The utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are only descriptive and are not intended to limit the scope of protection of this utility model.

[0023] Example 1

[0024] A mechanical interlocking device for a dual-power switching switch, such as Figures 1-5 As shown, it includes: a mounting box 5, a device body 1 fixedly connected to one side of the mounting box 5, multiple opening and closing gates 4 on one side of the device body 1, an anti-closing component 3 at the bottom of the mounting box 5, and multiple stabilizing components 2 on one side of the mounting box 5.

[0025] The anti-closing assembly 3 includes multiple movable lead screws 308, with a connecting shaft 306 fixedly connected between adjacent movable lead screws 308. One end of each movable lead screw 308 and one end of the connecting shaft 306 are rotatably connected to one side of the inner wall of the mounting box 5. A lead screw seat 307 is threaded onto the outer surface of the movable lead screw 308. The end of the lead screw seat 307 away from the movable lead screw 308 extends to the outside of the mounting box 5. A through groove is provided at the bottom of the mounting box 5, and the movable lead screw 308 is slidably connected in the through groove. A connecting block 304 is fixedly connected to one side of the lead screw seat 307, and a clamping plate 305 is fixedly connected to one side of the connecting block 304. The clamping plate 305 can move and limit the closing of the brake. A transmission gear 310 is fixedly connected to the outer surface of the connecting shaft 306, and a movable rack 311 meshes with one side of the transmission gear 310. A sliding rod 302 is fixedly connected to one end of the moving rack 311. One end of the sliding rod 302 extends to the outside of the mounting box 5. A sliding groove is opened at the end of the sliding rod 302 away from the moving rack 311, and a telescopic rod 313 is slidably connected in the sliding groove. A strong spring 312 is fixedly connected between the telescopic rod 313 and the inner wall of the sliding groove. A bonding plate 301 is fixedly connected to the other end of the telescopic rod 313. The opening and closing gate 4 is in contact with the bonding plate 301 during rotation. A return spring 303 is sleeved on the outer surface of the sliding rod 302. The two sides of the return spring 303 are fixedly connected to one side of the bonding plate 301 and the bottom of the inner wall of the mounting box 5, respectively. A fixed sliding rod 309 is fixedly connected to the top of the inner wall of the mounting box 5. A sliding hole is opened at the top of the moving rack 311, and the fixed sliding rod 309 is slidably connected to the sliding hole.

[0026] In practical application, by setting the anti-closing assembly 3, the worker pushes the opening and closing gate 4, the opening and closing gate 4 is driven by the sliding rod 302 through the sticking plate 301, the sliding rod 302 drives the transmission gear 310 to rotate through the moving rack 311, the transmission gear 310 drives the moving screw 308 to rotate through the connecting shaft 306, the moving screw 308 drives the connecting block 304 and the clamping plate 305 to move through the screw seat 307, and the moving rack 311 can be moved twice through the cooperation of the strong spring and the telescopic rod, and the moving distance of the clamping plate 305 is just satisfied with the limiting of the third opening and closing gate 4 through the transmission of the rotation stroke of the transmission gear 310 driven twice, so that when any opening and closing gate 4 is closed, the third opening and closing gate 4 is mechanically locked and cannot be closed, and the overcurrent fault during bus loop operation is effectively avoided.

[0027] Embodiment 2

[0028] A mechanical locking device of a dual power switching switch, which is different from embodiments 1 and 3, as shown in Figures 1-2 The stable assembly 2 includes a fixed part 202, one side of the fixed part 202 is fixedly connected with one side of the mounting box 5, one side of the fixed part 202 is rotatably connected with a lifting screw 203, the outer surface of the lifting screw 203 is threadedly connected with a limiting plate 204, one end of the lifting screw 203 extends to the other side of the fixed part 202 and is fixedly connected with a knob 201, a plurality of sliding blocks 205 are fixedly connected with one side of the mounting box 5, and one side of the limiting plate 204 is provided with a sliding groove 206, and the sliding groove 206 is slidably connected with the sliding block 205.

[0029] In practical application, by setting the stable assembly 2, when the two opening and closing gates 4 are pushed, the worker rotates the knob 201, the knob 201 drives the lifting screw 203 to rotate, the lifting screw 203 drives the limiting plate 204 to slide downward, so that the limiting plate 204 limits the opening and closing gate 4, avoids the opening and closing gate 4 from being reset due to accidental touch to cause power failure, and improves the stability of the device connection.

[0030] Working principle: when in use, the worker pushes the first opening and closing gate 4 to move upward, in the process, the opening and closing gate 4 gradually fits with the fitting plate 301 in the process of rotating and drives the fitting plate 301 to move upward, the fitting plate 301 drives the sliding rod 302 to move, the sliding rod 302 drives the moving rack 311 to move, the moving rack 311 drives the transmission gear 310 to rotate, the transmission gear 310 drives the connecting shaft 306 to rotate, the connecting shaft 306 drives the moving lead screw 308 to rotate, the moving lead screw 308 drives the lead screw seat 307 to move in the through slot, the lead screw seat 307 drives the connecting block 304 to move, the connecting block 304 drives the clamping plate 305 to move a certain distance, at the same time, the rest of the transmission gear 310 also drives the moving rack 311 to move, when the worker pushes the second opening and closing gate 4 to move upward, at this time, the strong spring is stretched, so that the position of the fitting plate 301 has no change, at this time, the opening and closing gate 4 can drive the fitting plate 301 to move, the fitting plate 301 drives the clamping plate 305 to move a certain distance again through the sliding rod 302, the moving rack 311, the transmission gear 310, the connecting shaft 306, the moving lead screw 308, the lead screw seat 307 and the connecting block 304, so that the clamping plate 305 can limit the third opening and closing gate 4 in the initial position, so that the third opening and closing gate 4 cannot be pushed upward, at the same time, when the two opening and closing gates 4 are pushed upward, the worker rotates the knob 201, the knob 201 drives the lifting lead screw 203 to rotate, the lifting lead screw 203 drives the limiting plate 204 to slide downward, so that the limiting plate 204 limits the opening and closing gate 4, avoiding the opening and closing gate 4 to reset.

[0031] The embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and those skilled in the art can make modifications without creative contribution according to the needs after reading the specification, but as long as it is within the scope of the utility model claims, it is protected by the patent law.

Claims

1. A mechanical interlock for a dual power transfer switch, comprising: include: The installation box (5) has a fixed connection to the equipment body (1) on one side, and multiple opening and closing gates (4) are provided on one side of the equipment body (1). An anti-closing component (3) is provided at the bottom of the installation box (5), and multiple stabilizing components (2) are provided on one side of the installation box (5). The anti-closing component (3) includes multiple movable screws (308), and a connecting shaft (306) is fixedly connected between two adjacent movable screws (308). One end of the movable screw (308) and one end of the connecting shaft (306) are rotatably connected to one side of the inner wall of the mounting box (5). A screw seat (307) is threadedly connected to the outer surface of the movable screw (308). The end of the screw seat (307) away from the movable screw (308) extends to the outside of the mounting box (5). A through groove is provided at the bottom of the mounting box (5). The movable screw (308) is slidably connected in the through groove. A connecting block (304) is fixedly connected to one side of the screw seat (307). A clamping plate (305) is fixedly connected to one side of the connecting block (304). The clamping plate (305) can move and limit the closing of the gate.

2. A mechanical interlock for a dual power switch according to claim 1, wherein, A transmission gear (310) is fixedly connected to the outer surface of the connecting shaft (306). A movable rack (311) meshes with one side of the transmission gear (310). A sliding rod (302) is fixedly connected to one end of the movable rack (311). One end of the sliding rod (302) extends to the outside of the mounting box (5). A sliding groove is provided at the end of the sliding rod (302) away from the movable rack (311). A telescopic rod (313) is slidably connected in the sliding groove. A strong spring (312) is fixedly connected between the telescopic rod (313) and the inner wall of the sliding groove. A bonding plate (301) is fixedly connected to the other end of the telescopic rod (313). The opening and closing gate (4) is in contact with the bonding plate (301) during rotation.

3. A mechanical interlock for a dual power switch according to claim 2, wherein, A return spring (303) is sleeved on the outer surface of the sliding rod (302), and the two sides of the return spring (303) are fixedly connected to one side of the bonding plate (301) and the bottom of the inner wall of the mounting box (5), respectively.

4. A mechanical interlock for a dual power switch according to claim 3, wherein, A fixed slide rod (309) is fixedly connected to the top of the inner wall of the mounting box (5), and a sliding hole is opened on the top of the movable rack (311). The fixed slide rod (309) is slidably connected to the sliding hole.

5. A mechanical interlock for a dual power switch according to claim 4, wherein, The stabilizing component (2) includes a fixing member (202), one side of which is fixedly connected to one side of the mounting box (5), and a lifting screw (203) is rotatably connected to one side of the fixing member (202). A limit plate (204) is threadedly connected to the outer surface of the lifting screw (203), and one end of the lifting screw (203) extends to the other side of the fixing member (202) and is fixedly connected to a knob (201).

6. A mechanical interlock for a dual power switch according to claim 5, wherein, A plurality of sliders (205) are fixedly connected to one side of the mounting box (5), and a groove (206) is provided on one side of the limiting plate (204), and the groove (206) is slidably connected to the sliders (205).

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