Relay power supply automatic reversing device
By designing an automatic relay power switching device, which uses a movable rod and electromagnet to achieve automatic contact switching and cleaning, the operation delays and malfunctions of mobile electrical equipment in the port area caused by power phase sequence problems have been solved, improving work efficiency and contact cleanliness.
Patent Information
- Application Number
- CN202422971260.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-03
AI Technical Summary
The phase sequence relays and reversing switches in the electrical boxes of mobile electrical equipment such as truck unloading hoppers in the port area require manual operation due to power phase sequence issues, which leads to start-up delays and malfunctions, increases the workload of staff, and affects work efficiency.
An automatic switching device for relay power supply was designed. Through the cooperation of a movable rod and an electromagnet, the device can automatically switch between normally closed and normally open contacts. During the switching process, a cleaning roller brush is used to clean the contact surface, simplifying the operation process.
It enables automatic switching of relay power, reduces the need for manual operation, improves work efficiency, and keeps the contacts clean to avoid malfunctions.
Smart Images
Figure CN223486877U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of relay technology, specifically to an automatic relay power switching device. Background Technology
[0002] A relay is an electrical control device that causes a predetermined step change in the controlled variable in the electrical output circuit when the input quantity changes to a specified value. It has an interactive relationship between the input and output circuits. Commonly used in automated control circuits, it is essentially an "automatic switch" that uses a small current to control a large current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.
[0003] Mobile electrical equipment within the port area, such as the electrical boxes under the truck unloading hoppers, are equipped with phase sequence relays and reversing switches. Before starting operations, corresponding operations are often required due to power phase sequence issues. However, operators are often unable or unwilling to perform these operations, requiring technical personnel to handle the situation, which delays the start of operations. During operation, phase sequence relays often malfunction for various reasons, requiring on-site technical assistance, which increases the workload of relevant personnel and affects operational efficiency.
[0004] Therefore, we propose an automatic relay power switching device to solve the problems mentioned above. Utility Model Content
[0005] The purpose of this utility model is to provide an automatic reversing device for relay power supply to solve the problems mentioned in the background art, such as the phase sequence relay and reversing switch installed in the electrical box of the truck unloading hopper in the port area. Before starting work, corresponding operations are often required due to power phase sequence problems, but the operators do not know how to perform the corresponding operations and relevant technicians are needed to handle them, which delays the start of work. During the operation, the phase sequence relay often malfunctions for various reasons, requiring technicians to handle it on-site, which increases the workload of relevant personnel and affects the efficiency of operation.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic reversing device for relay power supply, comprising a mounting housing and a phase sequence relay and a time relay fixedly installed inside the mounting housing. A reversing assembly is installed inside the mounting housing. The reversing assembly includes a fixed rod fixedly installed on the side wall of the time relay. Movable rods are slidably connected to the side walls of the fixed rods. Two moving contacts are fixedly installed between the two moving rods. Normally closed contacts and normally open contacts are fixedly installed on both sides of the side wall of the phase sequence relay. A control power supply is fixedly installed on the lower side wall of the phase sequence relay. A connecting plate is fixedly installed on the upper end of the control power supply. The two moving contacts are slidably connected to the normally closed contacts and the normally open contacts, respectively. Contact plates are fixedly installed on the side walls of the two moving contacts, and the contact plates are in contact with the connecting plate.
[0007] Preferably, a metal plate is fixedly installed on the side wall of the phase sequence relay, and the metal plate is disposed at the lower end of the normally closed contact.
[0008] Preferably, a magnet is fixedly installed on the inner wall of the mounting housing, a spring is fixedly installed on the side wall of the magnet, an electromagnet is fixedly installed on one end of the spring, the electromagnet is electrically connected to the normally closed contact, and the electromagnet is fixedly connected to the metal plate.
[0009] Preferably, the inner walls of the two movable rods are provided with a plurality of mounting grooves at equal intervals, and mounting blocks are fixedly installed in each mounting groove. A cleaning roller brush is rotatably installed between the inner walls on both sides of the mounting blocks.
[0010] Preferably, a plurality of the mounting slots are formed between the two moving contacts, and the cleaning roller is slidably connected to the sidewalls of the normally closed contact and the normally open contact.
[0011] Preferably, conductive plates are fixedly installed on the inner walls of both movable rods, and the time relay is electrically connected to the normally open contact through the conductive plates.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. When using this device, under normal circumstances, the normally closed contact is connected to the control power supply through the moving contact, contact plate, and connecting plate. When switching the power supply, the movable rod drives the fixed rod to slide, and the moving contact that was in contact with the normally closed contact slides away from its contact position. The moving contact on the other side slides to contact the normally open contact. At this time, the contact plate on the side wall of the moving contact adjacent to the normally open contact moves to contact the other side wall of the connecting plate at the lower end and is energized. This device can switch between normally closed and normally open contacts by moving the movable rod, and the operation is simple.
[0014] 2. With the cooperation of normally closed contacts, normally open contacts, control power supply, connecting plate, metal plate, time relay, magnet, spring, electromagnet, mounting groove, mounting block, cleaning roller brush, conductive plate and contact plate, this device can automatically switch between normally closed contacts and normally open contacts by turning the electromagnet on and off, and can clean the sides of both contacts during the switching. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;
[0016] Figure 2 This is a three-dimensional side view of the overall structure of this utility model;
[0017] Figure 3 This is a three-dimensional structural diagram of the overall side cross-section of this utility model;
[0018] Figure 4 For the present utility model Figure 3 Enlarged 3D structural diagram at point A.
[0019] In the diagram: 1. Mounting housing; 11. Magnet; 12. Spring; 13. Electromagnet; 2. Phase sequence relay; 21. Normally closed contact; 22. Normally open contact; 23. Control power supply; 24. Connecting plate; 25. Metal plate; 3. Time relay; 4. Reversing assembly; 41. Fixed rod; 42. Movable rod; 43. Moving contact; 44. Mounting slot; 45. Mounting block; 46. Cleaning roller brush; 47. Conductive plate; 48. Contact plate. Detailed Implementation
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0021] Example 1: Please refer to Figure 1 - Figure 3An automatic reversing device for relay power supply includes a mounting housing 1 and a phase sequence relay 2 and a time relay 3 fixedly installed inside the mounting housing 1. A reversing assembly 4 is installed inside the mounting housing 1. The reversing assembly 4 includes a fixed rod 41 fixedly installed on the side wall of the time relay 3. Movable rods 42 are slidably connected to the side walls of the fixed rods 41. Two moving contacts 43 are fixedly installed between the two moving rods 42. Normally closed contacts 21 and normally open contacts 22 are fixedly installed on both sides of the side wall of the phase sequence relay 2. A control power supply 23 is fixedly installed on the lower side wall of the phase sequence relay 2. A connecting plate 24 is fixedly installed on the upper end of the control power supply 23. The two moving contacts 43 are slidably connected to the normally closed contacts 21 and normally open contacts 22, respectively. Contact plates 48 are fixedly installed on the side walls of the two moving contacts 43, and the contact plates 48 are in contact with the connecting plate 24.
[0022] In this embodiment: When using the device, under normal circumstances, the normally closed contact 21 is connected to the control power supply 23 through the moving contact 43, the contact plate 48, and the connecting plate 24. When switching the power supply, the movable rod 42 drives the fixed rod 42 to slide, and the moving contact 43 that is in contact with the normally closed contact 21 slides away from its contact position. The moving contact 43 on the other side slides to contact the normally open contact 22. At this time, the contact plate 48 on the side wall of the moving contact 43 adjacent to the normally open contact 22 moves to contact the other side wall of the connecting plate 24 at the lower end and is energized. The device can switch between the normally closed contact 21 and the normally open contact 22 by moving the movable rod 42, which is simple to operate.
[0023] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figure 2 - Figure 4 A metal plate 25 is fixedly installed on the side wall of the phase sequence relay 2. The metal plate 25 is located at the lower end of the normally closed contact 21. The metal plate 25 can cooperate with the electromagnet 13 on the side to complete the displacement of the movable rod 42.
[0024] A magnet 11 is fixedly installed on the inner wall of the housing 1. A spring 12 is fixedly installed on the side wall of the magnet 11. An electromagnet 13 is fixedly installed on one end of the spring 12. The electromagnet 13 is electrically connected to the normally closed contact 21 and is fixedly connected to the metal plate 25. When the normally closed contact 21 is energized, the electromagnet 13 is energized and generates magnetic force. At this time, the magnetic force generated between the adjacent surfaces of the magnet 11 and the electromagnet 13 repulses each other, automatically pushing the electromagnet 13 outward.
[0025] The inner walls of the two movable rods 42 are provided with several mounting slots 44 at equal intervals. Mounting blocks 45 are fixedly installed in each mounting slot 44. Cleaning roller brushes 46 are rotatably installed between the inner walls on both sides of the mounting blocks 45.
[0026] Several mounting slots 44 are provided between two moving contacts 43. The cleaning roller brush 46 is slidably connected to the side walls of the normally closed contact 21 and the normally open contact 22. When the movable rod 42 moves, it will automatically clean the surface of the normally closed contact 21 and the normally open contact 22.
[0027] Conductive plates 47 are fixedly installed on the inner walls of both movable rods 42. The time relay 3 is electrically connected to the normally open contact 22 through the conductive plates 47. The conductive plates 47 ensure that the time relay 3 and the normally open contact 22 are always in a connected state.
[0028] In this embodiment: When switching between normally closed contact 21 and normally open contact 22 using this device, the electromagnet 13 is initially energized, and the magnetic force generated between it and the magnet 11 repulses each other, causing the moving contact 43 near the normally closed contact 21 to contact it and be connected to the power supply through the contact plate 48. During the switching, the electromagnet 13 is de-energized, the repulsive force between the electromagnet 13 and the magnet 11 disappears, and it is automatically pulled back to its original position under the action of the spring 12. During the pulling process, the movable rod 42 slides along the fixed rod 41. At this time, the cleaning roller brush 46 between the two movable rods 42 rotates along the upper and lower walls of the normally closed contact 21 and normally open contact 22 under the drive of the movable rod 42, cleaning the upper and lower walls. Finally, it moves to contact the moving contact 43 adjacent to the normally open contact 22 and connects the power supply. This device can automatically switch between the normally closed contact 21 and normally open contact 22 by turning the electromagnet 13 on and off, and can clean the sides of both during the switching.
[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An automatic reversing device for relay power supply, comprising a mounting housing (1) and a phase sequence relay (2) and a time relay (3) fixedly mounted inside the mounting housing (1), characterized in that: The commutation assembly (4) is installed inside the mounting housing (1). The commutation assembly (4) includes a fixed rod (41) fixedly installed on the side wall of the time relay (3). Movable rods (42) are slidably connected to the side walls of the fixed rods (41). Two moving contacts (43) are fixedly installed between the two moving rods (42). Normally closed contacts (21) and normally open contacts (22) are fixedly installed on both sides of the side wall of the phase sequence relay (2). A control power supply (23) is fixedly installed on the lower side wall of the phase sequence relay (2). A connecting plate (24) is fixedly installed on the upper end of the control power supply (23). The two moving contacts (43) are slidably connected to the normally closed contacts (21) and the normally open contacts (22) respectively. A contact plate (48) is fixedly installed on the side wall of the two moving contacts (43). The contact plate (48) is in contact with the connecting plate (24).
2. The automatic relay power switching device according to claim 1, characterized in that: A metal plate (25) is fixedly installed on the side wall of the phase sequence relay (2), and the metal plate (25) is located at the lower end of the normally closed contact (21).
3. The automatic relay power switching device according to claim 2, characterized in that: A magnet (11) is fixedly installed on the inner wall of the mounting housing (1), a spring (12) is fixedly installed on the side wall of the magnet (11), an electromagnet (13) is fixedly installed on one end of the spring (12), the electromagnet (13) is electrically connected to the normally closed contact (21), and the electromagnet (13) is fixedly connected to the metal plate (25).
4. The automatic relay power switching device according to claim 3, characterized in that: The inner walls of the two movable rods (42) are provided with several mounting grooves (44) at equal intervals. Each mounting groove (44) is fixedly installed with a mounting block (45). A cleaning roller brush (46) is rotatably installed between the inner walls on both sides of the mounting block (45).
5. The automatic relay power switching device according to claim 4, characterized in that: Several mounting slots (44) are formed between two moving contacts (43), and the cleaning roller (46) is slidably connected to the sidewalls of the normally closed contact (21) and the normally open contact (22).
6. The automatic relay power switching device according to claim 5, characterized in that: The inner walls of the two movable rods (42) are fixedly equipped with conductive plates (47), and the time relay (3) is electrically connected to the normally open contact (22) through the conductive plates (47).