Dual-power cabinet mechanical switching device

Abstract

The utility model discloses a mechanical switching device for a dual-power cabinet, which relates to the technical field of electrical equipment and comprises a fixed seat and power switches arranged on two sides of the fixed seat, and a driven swing arm and a driving swing arm are rotatably arranged on two sides of the fixed seat through pin shafts respectively. According to the utility model, the driven swing arm, the driving swing arm, the tension spring, the electromagnet and the armature are arranged, the driven swing arm and the driving swing arm are respectively connected with the shifting blocks of the two power switches through the clamping seats, the tension spring provides power for rotation of the driven swing arm, and the electromagnet and the armature provide power for position locking of the driving swing arm. When the circuit of the power switch corresponding to the driving swing arm is powered off, the electromagnet loses magnetic force, and the driven swing arm drives the shifting block of the other power switch to move under the traction action of the torsion spring, so that automatic switching of the two power switches is realized, the switching process is driven by a mechanical structure, and the power switch has the advantage of higher stability.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a mechanical switching device for a dual power supply cabinet. Background Technology

[0002] Dual power supply switching cabinets mainly consist of dual power supply switching devices, which can manually switch between the primary power supply and the backup power supply as needed, ensuring the reliability and continuity of power supply. They are widely used in important locations requiring uninterrupted power supply, such as high-rise buildings, telecommunications, industrial and mining enterprises, and shipping. When a circuit fault or sudden power outage necessitates the activation of the backup power supply, personnel must go to the equipment room where the dual power supply switching cabinet is located. They then use the correct key to open the cabinet door and rotate the knob of the dual power supply switching device inside to connect the backup power supply, thus restoring normal power supply.

[0003] The existing dual-power switching cabinets have some problems in their use. The existing switching devices have a single switching mode, which can only realize automatic or manual switching. Furthermore, the power of automatic switching depends on electrical instruments and equipment, resulting in problems such as untimely switching and inability to self-lock. In addition, when external power is restored, there is a problem that the device cannot be reset in time.

[0004] Therefore, it is necessary to invent a dual-power cabinet mechanical switching device to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a dual power supply cabinet mechanical switching device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual power supply cabinet mechanical switching device, including a fixed base and power switches disposed on both sides of the fixed base. The fixed base has a driven swing arm and a driven swing arm rotatably disposed on both sides via pins. The driven swing arm and the driven swing arm are staggered, and a retainer is fixedly disposed at one end of each driven swing arm and the driven swing arm. The retainer is adapted to the power switch. The inner walls of both sides of the fixed base are rotatably provided with transmission bevel gears. Two transmission bevel gears are respectively connected to one end of the driven swing arm and the driven swing arm. A connecting bevel gear is disposed between the two transmission bevel gears, and the connecting bevel gear is rotatably disposed inside the fixed base.

[0007] An extension arm is fixedly provided at the end of the driven swing arm away from the card seat. A fixed arm is fixedly provided at the bottom of the rear side of the fixed seat. A tension spring is provided between the fixed arm and the extension arm. A positioning arm is fixedly provided at the end of the active swing arm away from the card seat. An armature is fixedly provided at the bottom of the positioning arm. An electromagnet is fixedly provided at the bottom of the outer side wall of the fixed seat, and the electromagnet is compatible with the armature.

[0008] Preferably, a drive shaft is fixedly provided in the middle of the connecting bevel gear, and a bushing is slidably sleeved on one end of the drive shaft. The bushing is located on the outside of the fixed seat, and the drive shaft is a spline shaft.

[0009] Preferably, a spring is fixedly provided at one end of the drive shaft, and one end of the spring is connected to one end of the inner sidewall of the bushing.

[0010] Preferably, a piezoelectric switch is fixedly provided at one end of the bushing near the fixed base, and an emergency stop knob is fixedly provided at the other end of the bushing.

[0011] Preferably, both the mounting base and the rear side of the power switch are provided with mounting grooves.

[0012] Preferably, both the electromagnet and the armature are designed with an inclined structure.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model is achieved by setting a driven swing arm, an active swing arm, a tension spring, an electromagnet, and an armature. The driven swing arm and the active swing arm are respectively connected to the toggle blocks of two power switches through a card holder. The tension spring provides rotational power for the driven swing arm, and the electromagnet and armature provide position locking power for the active swing arm. When the circuit of the power switch corresponding to the active swing arm is de-energized, the electromagnet loses its magnetic force. At this time, the driven swing arm drives the toggle block of the other set of power switches to move under the traction of the torsion spring, thereby realizing the automatic switching of the two sets of power switches. Moreover, the switching process is driven by a mechanical structure and can achieve mechanical self-locking. Compared with the electrical control in the prior art, it has the advantage of being more stable. At the same time, the design of using an electromagnet as the power source allows the traction force of the electromagnet on the armature to be converted into the power for resetting the two sets of power switches when the circuit is restored, so as to achieve the effect of automatic reset.

[0015] 2. This utility model, by setting up a transmission bevel gear, a connecting bevel gear, a transmission shaft, a bushing, and a piezoelectric switch, allows for manual switching of the power switch when the bushing is pressed to trigger the piezoelectric switch, thereby releasing the electromagnet's traction force on the armature and enabling the switching of the power switch. By rotating the bushing, the connecting bevel gear is driven to rotate, and the connecting bevel gear, through the transmission bevel gear, drives the driven swing arm and the active swing arm to rotate, thus achieving manual reset and expanding the applicability of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a rear view schematic diagram of the fixed base structure of this utility model.

[0018] Figure 3 This is a side view of the fixing base structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the internal structure of the fixing base of this utility model.

[0020] Figure 5 This is a cross-sectional schematic diagram of the fixing base structure of this utility model.

[0021] In the diagram: 1. Fixed base; 2. Power switch; 3. Driven swing arm; 4. Active swing arm; 5. Card holder; 6. Transmission bevel gear; 7. Connecting bevel gear; 8. Extension arm; 9. Fixed arm; 10. Tension spring; 11. Positioning arm; 12. Armature; 13. Electromagnet; 14. Transmission shaft; 15. Bushing; 16. Spring; 17. Piezoelectric switch; 18. Emergency stop knob; 19. Mounting slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides, for example Figure 1-5 The mechanical switching device of a dual power supply cabinet shown includes a fixed base 1 and power switches 2 on both sides of the fixed base 1. The two sides of the fixed base 1 are respectively provided with a driven swing arm 3 and a driven swing arm 4 rotatably by a pin. The driven swing arm 3 and the driven swing arm 4 are staggered. A card seat 5 is fixed at one end of the driven swing arm 3 and the driven swing arm 4. The card seat 5 is adapted to the power switch 2. The inner walls of both sides of the fixed base 1 are provided with transmission bevel gears 6 rotatably. The two transmission bevel gears 6 are respectively connected to one end of the driven swing arm 3 and the driven swing arm 4. A connecting bevel gear 7 is provided between the two transmission bevel gears 6, and the connecting bevel gear 7 is rotatably located inside the fixed base 1.

[0024] An extension arm 8 is fixedly provided at the end of the driven swing arm 3 away from the card seat 5. A fixed arm 9 is fixedly provided at the bottom of the rear side of the fixed seat 1. A tension spring 10 is provided between the fixed arm 9 and the extension arm 8. A positioning arm 11 is fixedly provided at the end of the active swing arm 4 away from the card seat 5. An armature 12 is fixedly provided at the bottom of the positioning arm 11. An electromagnet 13 is fixedly provided at the bottom of the outer side wall of the fixed seat 1. The electromagnet 13 and the armature 12 are matched. Both the electromagnet 13 and the armature 12 are designed with an inclined structure. The inclined structure design avoids the armature 12 from being affected when it is separated from the electromagnet 13 and the armature 12 rotates with the active swing arm 4. It should be noted that the magnetic force generated by the electromagnet 13 when it is energized is greater than the tension of the tension spring 10. The attraction force of the magnetic force generated by the electromagnet 13 when it is energized on the armature 12 is sufficient to drive the armature 12 to reset.

[0025] A drive shaft 14 is fixedly provided in the middle of the connecting bevel gear 7. A bushing 15 is slidably sleeved on one end of the drive shaft 14. The bushing 15 is located on the outside of the fixed base 1. The drive shaft 14 is a spline shaft. A spring 16 is fixedly provided at one end of the drive shaft 14. One end of the spring 16 is connected to one end of the inner side wall of the bushing 15. The spring 16 is used to ensure that the piezoelectric switch 17 will not be triggered in the default state.

[0026] A piezoelectric switch 17 is fixedly provided at one end of the bushing 15 near the fixed base 1, and an emergency stop knob 18 is fixedly provided at the other end of the bushing 15. The emergency stop knob 18 is used for manual intervention.

[0027] Both the mounting base 1 and the power switch 2 have mounting slots 19 on their rear sides. The mounting slots 19 are used to connect with the bracket inside the dual power supply cabinet to realize the installation of the mounting base 1 and the power switch 2.

[0028] Working principle of this utility model:

[0029] When this device is in use, the two power switches 2 and the fixed base 1 are installed inside the power cabinet through the mounting groove 19 on the rear side, and the fixed base 1 is installed between the two power switches 2. The driven swing arm 3 and the end of the active swing arm 4 on both sides of the fixed base 1 are respectively locked on the outside of the toggle block of the two power switches 2. The two power switches 2 are respectively connected to the main circuit and the backup circuit. The electromagnet 13 is connected in parallel with the power switch 2 on the main circuit through the transformer. When the main circuit is powered normally, the electromagnet 13 is energized and generates magnetic force, which attracts the armature 12, so that the armature 12 and the electromagnet 13 are in contact. At this time, the power switch 2 on the main circuit is in the open state, the power switch 2 on the backup circuit is in the closed state, and the tension of the spring 10 on the extension arm 8 of the driven swing arm 3 is canceled by the magnetic force of the electromagnet 13.

[0030] When the main circuit is de-energized, the electromagnet 13 connected to the main circuit loses its electromagnetic force. At this time, the tension of the spring 10 is no longer canceled by the magnetic force. The spring 10 pulls the extension arm 8 to make the driven swing arm 3 rotate. The driven swing arm 3 drives the toggle block on the power switch 2 connected to the backup circuit to rotate through the card seat 5, so that the power switch 2 on the backup circuit is turned on. At the same time, the driven swing arm 3 drives the active swing arm 4 to rotate through the transmission bevel gear 6 and the connecting bevel gear 7. While realizing the closing of the power switch 2 on the backup circuit, the power switch 2 on the main circuit is opened, thus ensuring the normal operation of the circuit.

[0031] When the main circuit is restored to power, the electromagnet 13 connected to the main circuit is energized to generate magnetic force. The magnetic force attracts the armature 12, causing the armature 12 to drive the positioning arm 11 and the active swing arm 4 to rotate, thereby closing the power switch 2 on the main circuit and opening the power switch 2 on the backup circuit, so as to realize the automatic reset of the power switch 2.

[0032] When manual intervention is required, pressing the emergency stop knob 18 causes the bushing 15 to slide, and the bushing 15 causes the piezoelectric switch 17 to move, so that the piezoelectric switch 17 is pressed against the outside of the fixed seat 1, thereby triggering the piezoelectric switch 17. After the piezoelectric switch 17 is triggered, the controller between it and the electromagnet 13 can control the electromagnet 13 to cut off the power, so as to realize the switching from the main circuit to the backup circuit.

[0033] When manual full control of the device is required, the connection between the electromagnet 13 and the circuit can be cut off, and the tension spring 10 can be removed. Then, by turning the emergency stop knob 18, the bushing 15 and the transmission shaft 14 can be rotated, thereby driving the connecting bevel gear 7 to rotate. The connecting bevel gear 7 drives the driven swing arm 3 and the active swing arm 4 to rotate through the transmission bevel gear 6, so as to realize the manual switching of the two power switches 2.

[0034] It should be noted that the two power switches 2 in this embodiment adopt the corresponding structure in the existing dual power supply cabinet. The electromagnet 13 is equipped with a transformer to ensure that it can be connected to the circuit. The electromagnet 13 is connected to the main circuit and separated from the backup circuit to ensure that it is not affected by the backup circuit. The piezoelectric switch 17 is set to the corresponding structure in the prior art, and a controller is provided between it and the electromagnet 13. When the piezoelectric switch 17 is triggered, the circuit of the electromagnet 13 can be disconnected.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dual-power cabinet mechanical switching device, comprising a fixed base (1) and power switches (2) disposed on both sides of the fixed base (1), characterized in that: The fixed base (1) has a driven swing arm (3) and a driven swing arm (4) rotatably mounted on both sides via pins. The driven swing arm (3) and the driven swing arm (4) are staggered, and a card seat (5) is fixedly mounted at one end of each of the driven swing arm (3) and the driven swing arm (4). The card seat (5) is compatible with the power switch (2). The inner walls of both sides of the fixed base (1) are rotatably mounted with transmission bevel gears (6). The two transmission bevel gears (6) are respectively connected to one end of the driven swing arm (3) and the driven swing arm (4). A connecting bevel gear (7) is provided between the two transmission bevel gears (6), and the connecting bevel gear (7) is rotatably mounted inside the fixed base (1). An extension arm (8) is fixedly provided at the end of the driven swing arm (3) away from the card seat (5). A fixed arm (9) is fixedly provided at the bottom of the rear side of the fixed seat (1). A tension spring (10) is provided between the fixed arm (9) and the extension arm (8). A positioning arm (11) is fixedly provided at the end of the active swing arm (4) away from the card seat (5). An armature (12) is fixedly provided at the bottom of the positioning arm (11). An electromagnet (13) is fixedly provided at the bottom of the outer side wall of the fixed seat (1), and the electromagnet (13) is compatible with the armature (12).

2. A dual mains cabinet mechanical switching device according to claim 1, characterised in that: A drive shaft (14) is fixedly provided in the middle of the connecting bevel gear (7). A bushing (15) is slidably sleeved on one end of the drive shaft (14). The bushing (15) is located on the outside of the fixed seat (1). The drive shaft (14) is a spline shaft.

3. A dual mains cabinet mechanical switching device according to claim 2, characterised in that: One end of the drive shaft (14) is fixedly provided with a spring (16), and one end of the spring (16) is connected to one end of the inner sidewall of the bushing (15).

4. A dual mains cabinet mechanical switching device according to claim 3, characterised in that: A piezoelectric switch (17) is fixedly provided at one end of the bushing (15) near the fixed base (1), and an emergency stop knob (18) is fixedly provided at the other end of the bushing (15).

5. A dual mains cabinet mechanical switching device according to claim 1, characterized in that: The mounting base (1) and the power switch (2) both have mounting grooves (19) on their rear sides.

6. A dual mains cabinet mechanical switching device according to claim 1, characterized in that: Both the electromagnet (13) and the armature (12) are designed with an inclined structure.

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