A guide rail mounted dual power automatic transfer switch

Abstract

The invention discloses a guide rail mounted dual power automatic switching switch in the technical field of dual power switches, comprising a shell, a disc rotatably connected inside the shell, a switching rod cross-fixedly connected to the disc, a main contact group and an auxiliary contact group comprising contact heads, a flexible conductive sheet fixedly connected between one end of the switching rod away from the main contact group and an output end, an armature limitedly slidably connected inside the shell, an electromagnet one and an electromagnet two are symmetrically arranged at two ends of the armature, the limiting rod is rotatably connected inside the shell, a sliding rod limitedly slidably connected to the limiting rod on one side of the disc close to the armature, a spring capable of resetting the sliding rod in a direction away from the limiting rod is sleeved on the outside of the limiting rod, a push column is limitedly slidably connected to the inner wall of the shell, a dial column capable of pushing the push column to slide is fixedly connected to the disc, the invention can realize the switching of power supply circuits in a very short time, and has a simple structure, a small volume and is convenient for installation.

Description

Technical Field

[0001] The invention relates to the technical field of dual power switches, in particular to a guide rail mounted dual power automatic transfer switch. Background Art

[0002] The main principle of the dual power switch is that after the normal power supply is cut off, the switch will switch the power connection from the normal power supply terminal to the backup power supply terminal in a short time. For example, when the city power outage is detected, the switch will switch the power supply to the generator circuit to supply power to the load, thereby ensuring normal power supply.

[0003] Most of the existing dual power switches use motors to switch between two power supply circuits. The main switch switching principle is that the motor drives the transmission mechanism and then drives the two switches to close or open the switch. However, during the switching process, the motor cannot reach the maximum rotation speed instantly when it starts, and it has its own starting time. Moreover, since the transmission mechanism needs to be driven, the motor generally needs to drive the transmission mechanism through a reduction mechanism to switch the switch. Otherwise, the motor is easily damaged. Moreover, the motor whose speed has not been reached does not have enough force to drive the transmission mechanism. After the motor speed is reached, the reduction mechanism is driven to rotate, and then the transmission mechanism is driven to switch the switch to power supply. There is a long drive chain in the middle, so the switch cannot be switched in a very short time, which causes the load equipment to be powered off and restored in a short time, which is easy to cause equipment damage due to excessive voltage. In the face of emergency situations such as fire fighting, it is easy to cause danger. In addition, for some large equipment, there will be a restart protection system after power failure, and it needs to be restarted after power is restored. This will cause the equipment to be unable to be used immediately, which will cause greater losses in environments such as fire fighting and uninterrupted production. Summary of the invention

[0004] The technical problem of the present invention is to provide a rail-mounted dual-power automatic transfer switch, which can realize the switching of power supply circuits in a very short time, and has a simple structure, small size and is easy to install.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a guide rail mounted dual power automatic transfer switch, comprising a housing, a disc rotatably connected in the housing, a transfer rod being fixedly connected to the disc transversely, a main contact group and an auxiliary contact group with the same structure are also mirror-imaged at positions above and below one end of the transfer rod in the housing, the main contact group and the auxiliary contact group comprising contact heads, an output end is arranged at a position of the housing away from the main contact group and the auxiliary contact group, a flexible conductive sheet is fixedly connected between one end of the transfer rod away from the main contact group and the output end, an armature is limitedly slidably connected in the housing, an electromagnet 1 and an electromagnet 2 are symmetrically arranged at both ends of the armature, a limit rod is rotatably connected in the housing, a sliding rod which is limitedly slidably connected to the limit rod is hinged on one side of the disc close to the armature, a spring which can reset the sliding rod in a direction away from the limit rod is sleeved on the outside of the limit rod, a push column is limitedly slidably connected to the inner wall of the housing, and a shifting column which can push the push column to slide is fixedly connected to the disc.

[0006] As a further solution of the present invention, a contact head is provided on one side of the conversion rod close to the main contact group and the auxiliary contact group. The contact head is connected to the conversion rod for limited rotation, and the area of ​​the contact head is larger than that of the contact head.

[0007] As a further solution of the present invention, the main contact group and the auxiliary contact group also include an anti-detachment device, which includes a mounting frame fixedly connected to the inner wall of the shell and located above and below the conversion rod, a slider is connected to the mounting frame in a limited sliding manner, two claws are symmetrically hinged on the slider, the contact head is fixedly connected to a side surface of the slider close to the conversion rod, a limited frame is fixedly connected to the mounting frame slider, a pull rope is fixedly connected to the mounting frame, the other end of the pull rope passes through the limited frame to form a fork and is respectively fixedly connected to the two claws, a spring that can make the two claws engage is arranged between the upper ends of the two claws, and a spring that can make the slider reset in the direction close to the conversion rod is arranged on the mounting frame.

[0008] As a further solution of the present invention, an input terminal is provided on a side of the housing away from the output terminal, and the input terminal and the contact head are electrically connected via a flexible conductive sheet.

[0009] As a further solution of the present invention, an arc extinguishing hood is further provided in the housing near the conversion rod, and the fin group of the arc extinguishing hood is arc-shaped.

[0010] As a further solution of the present invention, a cover shell is fixedly connected to the outer shell, a handle that passes through and extends out of the outer shell is fixedly connected to the side of the disc away from the slide rod, a sliding groove for limiting the handle is provided on the cover shell, and a dustproof sheet is fixedly connected to the part of the handle located inside the cover shell.

[0011] As a further solution of the present invention, a horizontal buckle and a vertical buckle are provided on one side surface of the housing close to the output end.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Electromagnet 1 and electromagnet 2 are provided. When the common power supply is cut off, the relay will control electromagnet 1 or electromagnet 2 to be energized instantly, thereby generating a magnetic field to attract the armature, thereby driving the disc through the lever to rotate the switching rod to realize the switching of the power supply circuit, which can realize the uninterrupted power supply of the load, thereby effectively protecting the safety of the load equipment, and ensuring that the equipment will not be affected by power failure in time.

[0014] 2. When the conversion rod drives the contact head to move toward the contact head, after contacting the contact head, it will push the contact head to push the slider on the mounting frame to move away from the conversion rod. At the same time, as the slider rises, the pull rope returns to a relaxed state from a taut state, so that the spring on the claw will make the two claws buckle on the contact head, thereby preventing the contact head and the contact head from detaching, thereby preventing the possibility of power failure due to collision. After the claw buckles the contact head and the contact head, it will continue to slide on the mounting frame with the slider until it can no longer slide. Therefore, in the process, it can also play a buffering function and slow down the conversion rod, thereby preventing the conversion rod from being hit and bent after long-term use, and protecting the conversion rod.

[0015] 3. When the disc rotates, the handle will also rotate. The dustproof sheet can cover the slide slot and prevent dust. The handle can be used for manual driving to turn off the automatic detection function of the relay. Then, the disc can be rotated by manually turning the handle to drive the conversion rod to rotate. Since a limit rod and a slide rod are provided, when the disc rotates to one of the contact groups, the spring in the limit rod will continue to resist the slide rod, so that the disc cannot rotate, thereby realizing the manual adjustment function, meeting different application needs and improving practical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure plan of the present invention;

[0019] Figure 3 It is a schematic diagram of the planar structure of the internal claw part of the present invention;

[0020] Figure 4 It is a three-dimensional schematic diagram of the internal structure of the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the claw part of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the armature part of the present invention.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 01. Shell; 02. Output terminal; 03. Horizontal buckle; 04. Vertical buckle; 05. Shifter; 06. Cover; 07. Handle; 08. Slide; 09. Dustproof sheet; 10. Disc; 11. Contact head; 12. Slide; 13. Flexible conductive sheet; 14. Conversion rod; 15. Contact head; 16. Arc extinguishing cover; 17. Mounting frame; 18. Input terminal; 19. Limit frame; 20. Slider; 21. Claw; 22. Pull rope; 23. Electromagnet 1; 24. Electromagnet 2; 25. Armature; 26. Sliding rod; 27. Limit rod. DETAILED DESCRIPTION

[0025] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 6The present invention provides a technical solution: a guide rail mounted dual power automatic transfer switch, comprising a housing 01, characterized in that: a disc 10 is rotatably connected in the housing 01, a transfer rod 14 is fixedly connected to the disc 10, a main contact group and an auxiliary contact group with the same structure are mirror-imaged at the upper and lower positions of one end of the transfer rod 14 in the housing 01, the main contact group and the auxiliary contact group include contact heads 11, an output terminal 02 is arranged at a position of the housing 01 away from the main contact group and the auxiliary contact group, and a fixed contact is formed between the end of the transfer rod 14 away from the main contact group and the output terminal 02. A flexible conductive sheet 13 is fixedly connected, an armature 25 is slidingly connected to the housing 01 in a limited position, and an electromagnet 23 and an electromagnet 24 are symmetrically arranged at both ends of the armature 25. A limit rod 27 is rotatably connected to the inside of the housing 01, and a slide rod 26 is hingedly connected to the limit rod 27 on one side of the disc 10 close to the armature 25 in a limited position, and a spring is sleeved on the outside of the limit rod 27 to reset the slide rod 26 in a direction away from the limit rod 27. A slide table 12 is slidingly connected to the inner wall of the housing 01, and a lever 05 that can push the slide table 12 to slide is fixedly connected to the disc 10.

[0027] When in use, the main power supply is electrically connected to the contact head 11 of the main contact group, the backup power supply is electrically connected to the contact head 11 of the auxiliary contact group, and the output terminal 02 is electrically connected to the load circuit. The same as the prior art, the electromagnet 1 23 and the electromagnet 2 24 are controlled by the relay. When in normal use, the main circuit is powered on. At this time, the relay detects that the power supply of the main circuit is normal, so that the electromagnet 1 23 is energized to generate magnetic force, and the electromagnet 2 24 is powered off and does not generate magnetic force, so that the armature 25 will move toward the side of the electromagnet 1 23 under the action of the magnetic force (it can be combined with Figure 2 and Figure 4 ), so that the armature 25 will push the lever 05 to rotate to the right through the left slide 12, so that the disc 10 will rotate counterclockwise through the lever 05, so that the disc 10 will drive the conversion rod 14 to rotate counterclockwise, so that the conversion rod 14 will be against the contact head 11 of the main contact group, so that the current of the main power supply circuit can flow to the conversion rod 14 through the contact head 11 of the main contact group and then flow to the output end 02 through the flexible conductive sheet 13, so as to realize power supply to the load. On the contrary, when the main power supply circuit is disconnected, the electric relay starts to control the electromagnet 2 24 to be energized, and the electromagnet 1 23 is not energized, so that the disc 10 will rotate clockwise, so that the conversion rod 14 and the contact head 11 of the auxiliary contact group are connected, so that the backup power supply can realize power supply to the load. When the main circuit is powered on again, the electromagnet 1 23 will work again, so that the main power supply circuit is powered on again;

[0028] When implementing the switching, it is the same as the prior art, all of which are controlled by relays. The prior art controls the start of the motor to implement the switching of the circuit power supply. The present technology implements the switching of the power supply mode by controlling the power supply of electromagnet 1 23 and electromagnet 2 24, and does not increase the cost in the detection method. However, unlike the prior art, the motor has a higher cost of use than the electromagnetic coil, and its larger size leads to an increase in the size of the switch. When used for a long time, the motor is prone to wear and tear, resulting in a decrease in its reaction speed, which leads to a slow circuit switching, and the load equipment needs to be restarted, which can easily cause damage to the equipment and is not conducive to emergency use. The motor is also easily damaged, resulting in a direct loss of function. Compared with the motor, the coil has a simple structure and is wear-resistant, so it has a longer service life and is not easy to be damaged. In terms of the structure for implementing circuit switching, the prior art generally uses a motor to drive a transmission mechanism to switch the power supply of the two circuits. It first needs to start the motor. Since the motor itself rotates at a faster speed, This requires a reducer to drive the switching of the circuit. Therefore, in the process of switching the circuit, it is necessary to first drive the motor's reduction mechanism and then drive the transmission mechanism to switch the circuit. Therefore, the switching process is slow, and it is impossible to achieve uninterrupted power supply to the load during the power supply switching process. In the present technology, the coil is driven. At the moment of power on, the coil will generate a magnetic field, thereby directly driving the transmission mechanism to replace the circuit, which is faster. Experiments have shown that the switching can be achieved within 50 milliseconds. Therefore, it can be achieved that the load is uninterrupted during the power supply change process; moreover, in response to different usage requirements, the number of turns of the electromagnetic coil or the current of the coil power supply circuit can be changed to change the magnetic force, so as to adapt to different usage requirements; since the limit rod 27 is provided with a spring, in addition to keeping the slide rod 26 always against the disc 10 so that it cannot rotate and adjusting the overall length of the slide rod 26 and the limit rod 27 during the rotation of the disc 10, during the rotation of the disc 10, it can be referred to. Figure 2, when it is rotated to this position, the spring is compressed to the maximum, so in the switching process, the spring in the limit rod 27 will first accumulate force, and then release it, thereby accelerating the rotation of the disc 10 so that the conversion rod 14 moves toward the contact head 11. At the same time, since the conversion rod 14 and the contact head 11 are directly rotated to contact each other, there may be a collision at the moment of contact. When the collision occurs, the reaction force of the contact head 11 on the conversion rod 14 will cause the conversion rod 14 to move a little distance away from the contact head 11. At this time, the spring in the limit rod 27 will be compressed, so that it can resist the conversion rod 14, buffer the collision, and prevent the conversion rod 14 and the contact head 11 from being separated by a large distance due to the collision, which may cause power failure; in addition, different from the prior art, since the switching of the circuit is realized by the way of using the disc 10 to drive the conversion rod 14 to rotate, the main contact group and the auxiliary contact group can be set on one side, which is different from the prior art, is convenient for wiring and wiring, and also reduces the volume, so that it can better adapt to the installation in a small space;

[0029] An electromagnet 1 23 and an electromagnet 2 24 are provided. When the common power supply is cut off, the relay will control the electromagnet 1 23 or the electromagnet 2 24 to be energized instantly, thereby generating a magnetic field to attract the armature 25, thereby driving the disc 10 through the lever 05 to rotate the conversion rod 14, realizing the switching of the power supply circuit, and realizing the uninterrupted power supply to the load, thereby effectively protecting the safety of the load equipment, and ensuring that the equipment is not affected by the power failure in time.

[0030] As a further solution of the present invention, a contact head 15 is provided on one side of the conversion rod 14 close to the main contact group and the auxiliary contact group. The contact head 15 is connected to the conversion rod 14 for limited rotation, and the area of ​​the contact head 15 is larger than that of the contact head 11.

[0031] Since the disc 10 drives the conversion rod 14 to rotate, the trajectory of the conversion rod 14 is an arc, and the contact head 15 can ensure the contact area between the conversion rod 14 and the contact head 11, thereby ensuring the conduction of the circuit.

[0032] As a further solution of the present invention, the main contact group and the auxiliary contact group also include an anti-slip device, which includes a mounting frame 17 fixedly connected to the inner wall of the shell 01 and located above and below the conversion rod 14, a slider 20 is connected to the mounting frame 17 in a limited sliding manner, and two claws 21 are symmetrically hinged on the slider 20, and the contact head 11 is fixedly connected to the side surface of the slider 20 close to the conversion rod 14, a limited frame 19 is fixedly connected to the slider 20 of the mounting frame 17, a pull rope 22 is fixedly connected to the mounting frame 17, and the other end of the pull rope 22 passes through the limited frame 19 to form a fork and is respectively fixedly connected to the two claws 21, a spring that can make the two claws 21 engage is arranged between the upper ends of the two claws 21, and a spring that can make the slider 20 reset in the direction close to the conversion rod 14 is arranged on the mounting frame 17.

[0033] When the conversion rod 14 drives the contact head 15 to move toward the contact head 11, after contacting the contact head 11, it will push the contact head 11 to push the slider 20 on the mounting frame 17 to move in the direction away from the conversion rod 14. At the same time, as the slider 20 rises, the pull rope 22 recovers from the taut state to the relaxed state, so that the spring on the claw 21 will make the two claws 21 buckle on the contact head 15, thereby preventing the contact head 15 and the contact head 11 from detaching, thereby preventing the possibility of power failure due to collision. After the claw 21 buckles the contact head 15 and the contact head 11, it will continue to slide on the mounting frame 17 with the slider 20 until it can no longer slide. Therefore, in the process again, it can also play a buffering function and slow down the conversion rod 14, thereby preventing the conversion rod 14 from being bent due to collision after long-term use, and protecting the conversion rod 14.

[0034] As a further solution of the present invention, an input terminal 18 is provided on a side of the housing 01 away from the output terminal 02 , and the input terminal 18 and the contact head 11 are electrically connected via a flexible conductive sheet 13 .

[0035] During the sliding of the slider 20 , since the flexible conductive sheet 13 is relatively soft, the power supply is not affected when the slider 20 drives the contact head 11 to slide.

[0036] As a further solution of the present invention, an arc extinguishing hood 16 is further provided in the housing 01 near the conversion rod 14 , and the fin group of the arc extinguishing hood 16 is arc-shaped.

[0037] The arc extinguishing hood 16 can eliminate the arc when the conversion rod 14 is switched, thereby serving as a protective device. At the same time, since the conversion rod 14 moves in an arc-shaped trajectory, the arc-shaped fins of the arc-extinguishing hood 16 can always maintain a minimum distance from the conversion rod 14 when the conversion rod 14 moves, thereby ensuring the arc extinguishing effect.

[0038] As a further solution of the present invention, a cover shell 06 is fixedly connected to the outer shell 01, a handle 07 that passes through and extends out of the outer shell 01 is fixedly connected to the side of the disc 10 away from the slide rod 26, a slide groove 08 for limiting the handle 07 is provided on the cover shell 06, and a dustproof sheet 09 is fixedly connected to the part of the handle 07 located inside the cover shell 06.

[0039] When the disc 10 rotates, the handle 07 will also be driven to rotate. The dustproof sheet 09 can cover the slide slot 08 and prevent dust. The handle 07 can be used for manual driving to turn off the automatic detection function of the relay. Then, the handle 07 can be manually turned to drive the disc 10 to rotate to drive the conversion rod 14 to rotate. Since a limit rod 27 and a slide rod 26 are provided, when the disc 10 rotates to one of the contact groups, the spring in the limit rod 27 will continue to resist the slide rod 26, so that the disc 10 cannot rotate, thereby realizing the manual adjustment function, meeting different application needs, and improving the practical effect.

[0040] As a further solution of the present invention, a horizontal buckle 03 and a vertical buckle 04 are provided on one side of the housing 01 close to the output end 02 .

[0041] During installation, the switch can be snapped onto the guide rail through the horizontal clip 03 and the vertical clip 04. Different from the prior art, the switch can be installed on the guide rail due to the reduced volume, which is convenient for installation. Due to its small size, it can also be installed in commonly used control cabinets in households, such as the PZ30 cabinet. In addition, due to the reduced volume, the 220V control voltage relay commonly used in the market is too large to meet the use of small-volume dual power supplies of this technology. The step-down circuit board, CBB and some voltage stabilizing components can be used to stably reduce the commonly used voltage of 220V in the market to 24V to control the relay, the core component, to control the switching of the dual power supplies, thereby achieving the purpose of small-volume switching.

Claims

1. A guide rail mounted dual power automatic transfer switch, comprising a housing (01), characterized in that: A disk (10) is rotatably connected inside the housing (01), a conversion rod (14) is fixedly connected to the disk (10) in a transverse manner, a main contact group and an auxiliary contact group with the same structure are also mirror-imagedly arranged at positions above and below one end of the conversion rod (14) inside the housing (01), the main contact group and the auxiliary contact group include contact heads (11), an output end (02) is arranged at a position on one side of the housing (01) away from the main contact group and the auxiliary contact group, a flexible conductive sheet (13) is fixedly connected between the end of the conversion rod (14) away from the main contact group and the output end (02), and an armature is limitedly slidably connected inside the housing (01). (25), the two ends of the armature (25) are symmetrically provided with an electromagnet 1 (23) and an electromagnet 2 (24), the housing (01) is internally rotatably connected to a limit rod (27), the disc (10) is hingedly connected to a slide rod (26) on the limit rod (27) on one side close to the armature (25), the limit rod (27) is externally sleeved with a spring capable of returning the slide rod (26) in a direction away from the limit rod (27), the inner wall of the housing (01) is limitedly slidably connected to a slide table (12), and the disc (10) is fixedly connected to a lever (05) capable of pushing the slide table (12) to slide; The armature (25) moves under the action of the first electromagnet (23) and the second electromagnet (24), and pushes the shifting post (05) to rotate through the slide (12). The rotation of the shifting post (05) causes the disc (10) to rotate, and the disc (10) drives the conversion rod (14) to rotate, so that the conversion rod (14) abuts against the contact head (11) of the main contact group or the contact head (11) of the auxiliary contact group.

2. A guide rail mounted dual power automatic transfer switch according to claim 1, characterized in that: A contact head (15) is provided on one side of the conversion rod (14) close to the main contact group and the auxiliary contact group. The contact head (15) is connected to the conversion rod (14) in a limited rotation manner, and the area of ​​the contact head (15) is larger than the area of ​​the contact head (11).

3. A guide rail mounted dual power automatic transfer switch according to claim 2, characterized in that: The main contact group and the auxiliary contact group also include an anti-slip device, which includes a mounting frame (17) fixedly connected to the inner wall of the housing (01) and located above and below the conversion rod (14); a slider (20) is slidably connected to the mounting frame (17) in a limited position; two claws (21) are symmetrically hinged on the slider (20); the contact head (11) is fixedly connected to a side surface of the slider (20) close to the conversion rod (14); a limiting frame (19) is fixedly connected to the mounting frame (17); a pull rope (22) is fixedly connected to the mounting frame (17); the other end of the pull rope (22) passes through the limiting frame (19) to form a fork and is respectively fixedly connected to the two claws (21); a spring is arranged between the upper ends of the two claws (21) to enable the two claws (21) to be locked; and a spring is arranged on the mounting frame (17) to enable the slider (20) to perform a reset movement in a direction close to the conversion rod (14).

4. The guide rail mounted dual power automatic transfer switch according to claim 3, characterized in that: Two input terminals (18) are arranged on a side of the housing (01) away from the output terminal (02), and the two input terminals (18) are electrically connected to the contact head (11) respectively via a flexible conductive sheet (13).

5. The guide rail mounted dual power automatic transfer switch according to claim 4, characterized in that: An arc extinguishing hood (16) is also provided in the housing (01) at a position close to the conversion rod (14), and the fin group of the arc extinguishing hood (16) is arc-shaped.

6. The guide rail mounted dual power automatic transfer switch according to claim 1, characterized in that: The outer shell (01) is fixedly connected to a cover shell (06); a handle (07) extending through the outer shell (01) is fixedly connected to the side of the disc (10) away from the slide rod (26); a slide groove (08) for limiting the handle (07) is provided on the cover shell (06); and a dustproof sheet (09) is fixedly connected to the part of the handle (07) located inside the cover shell (06).

7. A rail mounted dual power automatic transfer switch according to claim 6, characterized in that: A horizontal buckle (03) and a vertical buckle (04) are provided on one side surface of the housing (01) close to the output end (02).

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