An operating mechanism for switching on and off a standby power supply

Abstract

The application provides a common standby power supply opening and closing switching operation mechanism. The mechanism is driven to rotate by pulling the operation mechanism, and the driving shaft is driven to rotate by the driving disc. The movable contact is connected to the driving disc, so that the movable contact is controlled. The pulling plate and the hook of the pulling mechanism are matched with the hanging rod on the driving disc to drive the driving disc to rotate. When the pulling plate is retracted, the hook hooks the hanging rod, so that the driving disc is driven to rotate. When the driving disc rotates to a certain angle, the hook is separated from the hanging rod. At this time, the driving disc rotates to the position, that is, the movable contact on the driving shaft rotates to the position of contacting the static contact to connect the power supply. When the driving shaft is driven to rotate by the pulling mechanism, the energy storage disc is also rotated. The driving shaft is positioned and fixed when it rotates to the position. The positioning and fixing are realized by the elastic force generated by the energy storage spring.

Description

Technical Field

[0001] This invention relates to the field of power transfer switch technology, and more specifically to a commonly used backup power supply switching mechanism. Background Technology

[0002] The main power supply and backup power supply transfer switch is used to switch the power supply of the working circuit. It has a main power supply input terminal and a backup power supply input terminal. The power supply input terminal is connected to the stationary contact, and the moving contact actuates to connect to the stationary contact of the main power supply input terminal or the backup power supply input terminal to realize the power supply connection and switching.

[0003] The moving contact is rotatable, and by rotating the moving contact, it can be connected to different stationary contacts. How to design the rotating operating mechanism of the moving contact is a problem that needs to be considered, and how to make the moving contact stably stay in the position after the operation is completed is another problem that needs to be considered. Summary of the Invention

[0004] In view of the problems pointed out in the background art, the present invention proposes a commonly used backup power supply switching operation mechanism to solve the above-mentioned technical problems.

[0005] The technical solution of this invention is implemented as follows:

[0006] A commonly used backup power supply switching mechanism includes a rotatable drive shaft, a drive turntable coaxially mounted on the drive shaft, a hanging rod on the drive turntable, the hanging rod being parallel to the central axis of the drive turntable, the hanging rod passing through both sides of the axial direction of the drive turntable, and two hanging rods being provided, the two hanging rods being located on the left and right sides of the center of the drive turntable respectively.

[0007] It also includes a pulling mechanism, which includes a pull plate that can extend and retract left and right. The pull plate is arranged in the left and right direction, and one end of the pull plate is provided with a hook. There are two pulling mechanisms, which are located on both sides of the axial direction of the drive turntable. The two pulling mechanisms are located on the left and right sides of the drive turntable, respectively. The hook on the pull plate on the left side is corresponding to the hanging rod on the right side, and the hook on the pull plate on the right side is corresponding to the hanging rod on the left side. When the pull plate retracts, it can hook the corresponding pull plate through the hook to drive the drive turntable to rotate.

[0008] The present invention is further configured such that the pulling mechanism also includes a driving device for driving the pull plate to move left and right.

[0009] The invention is further configured such that the middle part of the hook is rotatably connected to the pull plate, one end of the hook is used to hook the hanging rod, the other end of the hanging rod is connected to a tension spring, one end of the tension spring is connected to the hanging rod, the other end of the tension spring is connected to the pull plate, the tension spring is located between the hook and the driving device, and the pull plate can restrict the hook from rotating towards the side where the tension spring is located.

[0010] The present invention is further configured such that the driving device is fixedly installed in the mounting bracket, and a return spring is provided between the pull plate and the mounting bracket, wherein the return spring is compressed when the pull plate retracts.

[0011] The present invention is further configured such that fixing plates are fixedly provided on both sides of the drive turntable along the axial direction, the fixing plates are provided with holes for the drive shaft rod to pass through, the fixing plates are provided with guide grooves along the left and right directions, and the pull plate is provided with guide rods extending into the guide grooves.

[0012] The present invention is further configured such that there are two drive turntables, and the two ends of the hanging rod extend to the outer side of the two drive turntables along their axial direction.

[0013] The invention is further configured such that an energy storage turntable coaxially with the drive shaft is fixedly mounted on the drive shaft, and support plates are fixedly mounted on both sides of the energy storage turntable along its axial direction. The support plates have holes for the drive shaft to pass through, and the left and right sides of the support plates are respectively provided with moving grooves along the left and right directions. The left and right sides of the energy storage turntable are respectively provided with moving shafts, and the two ends of the moving shafts are respectively slidably connected to the two moving grooves on the same side. The energy storage turntable is provided with two fixed pull shafts corresponding to the two moving shafts. The two fixed pull shafts are respectively located on the left and right sides of the energy storage turntable. The corresponding fixed pull shafts and moving shafts are connected by pull bars. One end of the pull bar is provided with a connecting hole for rotatable connection with the fixed pull shaft, and the other end of the pull bar is provided with a connecting groove for movable connection with the moving shaft. The connecting groove is provided along the length direction of the pull bar. An energy storage spring is sleeved on the pull bar, and the two ends of the energy storage spring abut against the moving shaft and the fixed pull shaft respectively.

[0014] The present invention is further configured such that there are two energy storage turntables, which are axially spaced apart from each other on the drive shaft, and the fixed pull shaft is disposed between the two energy storage turntables.

[0015] The present invention is further configured such that a drive gear coaxial with the drive shaft is fixedly mounted on the drive shaft, and a handle corresponding to the drive gear is also included. The handle is provided with teeth that mesh with the drive gear, and the drive handle is rotatable.

[0016] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0017] The common backup power switching operation mechanism provided by the present invention drives the turntable to rotate through a pulling mechanism, which in turn drives the drive shaft to rotate. The moving contact is connected to the drive shaft, thus realizing the control of the moving contact.

[0018] The pull plate and hook of the pulling mechanism cooperate with the hanging rod on the drive turntable to drive the drive turntable to rotate. When the pull plate retracts, the hook hooks onto the hanging rod, thus driving the drive turntable to rotate. When the drive turntable rotates to a certain angle, the hook separates from the hanging rod. At this time, the drive turntable rotates to the correct position, that is, the moving contact on the drive shaft rotates to the position where it contacts the stationary contact to connect the power supply.

[0019] When the pull mechanism operates the drive shaft to rotate, the energy storage turntable also rotates at the same time, positioning and fixing the drive shaft in place. This positioning and fixing relies on the elastic force generated by the energy storage spring. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the pulling mechanism and energy storage structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the pulling mechanism and the drive turntable of the present invention. Figure 1 .

[0024] Figure 4 This is a schematic diagram of the structure of the pulling mechanism and the drive turntable of the present invention. Figure 2 .

[0025] Figure 5 This is a schematic diagram of the structure of the pulling mechanism and the drive turntable of the present invention. Figure 3 .

[0026] Figure 6 This is a schematic diagram of the structure of the drive turntable of the present invention.

[0027] Figure 7 This is a schematic diagram of the pulling mechanism of the present invention.

[0028] Figure 8 This is a schematic diagram of the structure of the pulling mechanism and the drive turntable of the present invention. Figure 4 .

[0029] Figure 9 Schematic diagram of the structure of the energy storage turntable and energy storage spring of the present invention. Figure 1 .

[0030] Figure 10 This is a schematic diagram of the support plate of the present invention.

[0031] Figure 11 This is a schematic diagram of the structure of the support plate of the present invention. Figure 1 .

[0032] Figure 12 Schematic diagram of the structure of the energy storage turntable and energy storage spring of the present invention. Figure 2 .

[0033] Figure 13 This is a schematic diagram of the structure of the support plate of the present invention. Figure 2 .

[0034] Figure 14 This is a schematic diagram of the disassembled structure of the energy storage spring of the present invention.

[0035] Figure 15 This is a schematic diagram of the structure of the handle of the present invention. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] For reference as follows Figure 1-15 The present invention will be described as follows:

[0038] Example 1: A commonly used backup power supply switching mechanism includes a rotatable drive shaft 1, which is rotatably disposed in the switch housing, and one end of the drive shaft 1 is connected to a moving contact.

[0039] A drive turntable 2, which is coaxial with the drive shaft 1, is fixedly mounted on the drive shaft 1. The drive turntable 2 is circular and has a hanging rod 3. The hanging rod 3 is cylindrical and is parallel to the central axis of the drive turntable 2. The hanging rod 3 passes through both sides of the axial direction of the drive turntable 2. There are two hanging rods 3, which are located on the left and right sides of the center of the drive turntable 2, respectively. The two hanging rods 3 are symmetrically arranged and are positioned near the upper side of the drive turntable 2.

[0040] It also includes a pulling mechanism, which is used to pull the drive turntable 2 to rotate. The pulling mechanism includes a pull plate 4 that can be extended and retracted left and right. The pull plate 4 is an elongated structure arranged in the left and right direction. One end of the pull plate 4 is provided with a hook 5, and the other end of the pull plate 4 is connected to the drive device 6. The drive device 6 drives the pull plate 4 to move left and right. The drive device 6 can be an electric push rod, an electromagnetic push rod, etc.

[0041] There are two pulling mechanisms, located on opposite sides of the drive turntable 2 along its axis. The hooks 5 on the left-side pull plate 4 correspond to the hanging rods 3 on the right-side, and vice versa. When the pull plates 4 retract, the hooks 5 engage with the corresponding pull plates 4, causing the drive turntable 2 to rotate. The two pulling mechanisms operate the drive turntable 2 in both forward and reverse directions.

[0042] When the pull plate 4 retracts and moves, the drive turntable 2 rotates. When the drive turntable 2 rotates to a certain angle, the hook 5 is disengaged from the hanging rod 3. At this time, the drive turntable 2 stops rotating, the drive turntable 2 rotates to the position, the drive shaft 1 rotates to the position, the moving contact rotates to the position, and the moving contact and the stationary contact are electrically connected.

[0043] The hook 5 is long and narrow, with its middle section rotatably connected to the pull plate 4. One end (lower end) of the hook 5 is used to hook the hanging rod 3, and the other end (upper end) of the hanging rod 3 is connected to a tension spring 7. One end of the tension spring 7 is connected to the hanging rod 3, and the other end of the tension spring 7 is connected to the pull plate 4. The tension spring 7 is located between the hook 5 and the drive device 6. The pull plate 4 can restrict the hook 5 from rotating toward the side where the tension spring 7 is located. In the initial state, the tension spring 7 pulls the hook 5 tight with tension, and at the same time, the hook 5 and the pull plate 4 are in a state of mutual resistance, restricting the hook 5 from rotating toward the tension spring. At this time, the hook 5 and the pull plate 4 are in a state of mutual perpendicularity. When the pull plate 4 returns to its original position, the hook 5 will collide with the hanging rod 3. At this time, the hook 5 rotates away from the tension spring, the tension spring is stretched, the hook 5 rotates, passes over the hanging rod 3, and after passing over the hanging rod 3, the hook 5 returns to its initial position under the action of the tension spring.

[0044] The drive unit 6 is fixedly installed inside the mounting bracket 8. The mounting bracket 8 is fixedly connected to the open housing. The telescopic rod of the drive unit 6 is connected to the pull plate 4. A return spring 9 is provided between the pull plate 4 and the mounting bracket 8. The return spring 9 is arranged in the left-right direction. One end of the return spring 9 is connected to the pull plate, and the other end of the return spring 9 is connected to the mounting bracket. When the pull plate 4 retracts, the return spring 9 is compressed. When the pull plate 4 extends, the return spring 9 can provide a return force.

[0045] Fixed plates 10 are fixedly installed on both sides of the drive turntable 2 along the axial direction. The fixed plates 10 are fixedly connected to the switch housing. The two fixed plates 10 are respectively set with two pull plates 4. The fixed plates 10 are provided with holes for the drive shaft rod 1 to pass through. The fixed plates 10 are provided with guide grooves 11 along the left and right directions. The pull plates 4 are provided with guide rods 12 that extend into the guide grooves 11 on the corresponding fixed plates 10. The guide rods 12 and guide grooves 11 cooperate to enhance the stability of the pull plate movement.

[0046] There are two drive turntables 2 (which can be regarded as a combination of drive turntables 2 into a disc structure, which is more stable), and the two ends of the hanging rod 3 extend to the outer side of the two drive turntables 2 along the axis respectively.

[0047] In the above technical solution, the drive turntable 2 and the pulling mechanism drive the drive shaft to rotate to the energized position; the following technical solution can keep the drive shaft in the energized position.

[0048] A circular energy storage turntable 13 is fixedly mounted on the drive shaft 1, coaxial with it. Support plates 14 are fixedly mounted on both sides of the energy storage turntable 13 along its axial direction. Each support plate 14 has a hole through which the drive shaft 1 passes. Moving grooves 15 are provided on the left and right sides of each support plate 14 along the left-right direction. Moving shafts 16 are provided on the left and right sides of the energy storage turntable 13, parallel to the drive shaft 1. The two ends of each moving shaft 16 are slidably connected to the two moving grooves 15 on the same side, allowing the moving shafts 16 to slide along the moving grooves 15. Two fixed pull shafts 17, corresponding to the two moving shafts 16, are provided on the energy storage turntable 13, located on the left and right sides of the energy storage turntable 13, respectively. The corresponding fixed pull shaft 17 and movable shaft 16 are connected by a pull bar 18. One end of the pull bar 18 is provided with a connecting hole 181 for rotatable connection with the fixed pull shaft 17, and the other end of the pull bar 18 is provided with a connecting groove 182 for movable connection with the movable shaft 16. The connecting groove 182 is provided along the length direction of the pull bar 18. An energy storage spring 19 is sleeved on the pull bar 18, and the two ends of the energy storage spring 19 abut against the movable shaft 16 and the fixed pull shaft 17, respectively. There are two energy storage turntables 13, which are axially spaced apart on the drive shaft 1. The fixed pull shaft 17 is located between the two energy storage turntables 13.

[0049] The drive shaft 1 has three states: in the first state, the moving contact on the drive shaft 1 is in the middle position; in the second state, the moving contact on the drive shaft 1 rotates to the left and connects with the stationary contact of the backup power supply; in the third state, the moving contact on the drive shaft 1 rotates to the right and connects with the stationary contact of the main power supply.

[0050] When the drive shaft 1 is in the first state, the two pull bars 18 are arranged in a V-shape, and the energy storage spring 19 is in its natural state (the spring is neither compressed nor stretched). At this time, if the drive shaft 1 is to rotate, the two energy storage springs 19 must be forced to undergo elastic deformation, which requires the application of a certain force; otherwise, the drive shaft 1 cannot rotate, thus ensuring that the drive shaft 1 can be stably maintained in this position.

[0051] When the drive shaft 1 is in the second or third state, one pull bar 18 rotates to a horizontal state (of course, it does not necessarily have to be horizontal; the angle of rotation can be set), and the other pull bar 18 moves with the rotation of the energy storage turntable 13. At this time, the energy storage spring 19 on the pull bar 18 in the horizontal state is compressed (because the pull bar 18 moves with the moving shaft 16 through the connecting groove 182 on it), and the other energy storage spring 19 is in a natural state (because the moving shaft 16 moves with the energy storage turntable 13 in the moving groove 15). The elastic force formed by the compressed energy storage spring 19 can keep the drive shaft 1 in this position.

[0052] The following is the manual operation technical solution for drive shaft 1:

[0053] A drive gear 20 coaxial with the drive shaft 1 is fixedly mounted on the drive shaft 1, and a handle 21 corresponding to the drive gear 20 is also included. The handle 21 is provided with teeth 22 that mesh with the drive gear 20. The drive handle 21 is rotatably mounted on the bracket plate 14.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A commonly used backup power supply switching mechanism, comprising a rotatable drive shaft (1), characterized in that: A drive turntable (2) coaxial with the drive shaft (1) is fixedly installed on the drive shaft (1). A hanging rod (3) is provided on the drive turntable (2). The hanging rod (3) is parallel to the central axis of the drive turntable (2). The hanging rod (3) passes through both sides of the axial direction of the drive turntable (2). There are two hanging rods (3), and the two hanging rods (3) are located on the left and right sides of the center of the drive turntable (2) respectively. It also includes a pulling mechanism, which includes a pull plate (4) that can extend and retract left and right. The pull plate (4) is arranged in the left and right direction, and a hook (5) is provided at one end of the pull plate (4). There are two pulling mechanisms, which are located on the two sides of the axial direction of the drive turntable (2). The two pulling mechanisms are located on the left and right sides of the drive turntable (2). The hook (5) on the pull plate (4) on the left side is corresponding to the hanging rod (3) on the right side, and the hook (5) on the pull plate (4) on the right side is corresponding to the hanging rod (3) on the left side. When the pull plate (4) retracts, it can hook the corresponding hanging rod (3) through the hook (5) to drive the drive turntable (2) to rotate. The pulling mechanism also includes a mechanism for driving. A drive device (6) for moving the pull plate (4) left and right; the middle part of the hook (5) is rotatably connected to the pull plate (4), one end of the hook (5) is used to hook the hanging rod (3), and the other end of the hook (5) is connected to a tension spring (7). One end of the tension spring (7) is connected to the hook (5), and the other end of the tension spring (7) is connected to the pull plate (4). The tension spring (7) is located between the hook (5) and the drive device (6). The pull plate (4) can restrict the hook (5) from rotating to the side where the tension spring (7) is located. The drive device (6) is fixedly installed in the mounting frame (8). A return spring (9) is provided between the pull plate (4) and the mounting frame (8). When the pull plate (4) retracts, the return spring (9) is compressed.

2. The commonly used backup power supply switching mechanism according to claim 1, characterized in that: The drive turntable (2) has fixed plates (10) fixedly installed on both sides of its axial direction. The fixed plates (10) have holes for the drive shaft (1) to pass through. The fixed plates (10) have guide grooves (11) along the left and right directions. The pull plate (4) has guide rods (12) that extend into the guide grooves (11).

3. The commonly used backup power supply switching mechanism according to claim 1, characterized in that: The drive turntable (2) is provided in two parts, and the two ends of the hanging rod (3) extend to the outer side of the two drive turntables (2) in the axial direction respectively.

4. The commonly used backup power supply switching mechanism according to claim 1, characterized in that: A coaxial energy storage turntable (13) is fixedly mounted on the drive shaft (1). Support plates (14) are fixedly mounted on both sides of the energy storage turntable (13) along its axial direction. The support plates (14) have holes through which the drive shaft (1) passes. Moving grooves (15) are provided on the left and right sides of the support plates (14) along the left and right directions. Moving shafts (16) are provided on the left and right sides of the energy storage turntable (13). The two ends of the moving shafts (16) are slidably connected to the two moving grooves (15) on the same side. The energy storage turntable (13) has two fixed pull shafts corresponding to the two moving shafts (16). 17) Two fixed pull shafts (17) are located on the left and right sides of the energy storage turntable (13) respectively. The corresponding fixed pull shafts (17) and moving shafts (16) are connected by pull bars (18). One end of the pull bar (18) is provided with a connecting hole (181) that is rotatably connected to the fixed pull shaft (17). The other end of the pull bar (18) is provided with a connecting groove (182) that is movably connected to the moving shaft (16). The connecting groove (182) is set along the length direction of the pull bar (18). An energy storage spring (19) is sleeved on the pull bar (18). The two ends of the energy storage spring (19) abut against the moving shaft (16) and the fixed pull shaft (17) respectively.

5. A commonly used backup power supply switching mechanism according to claim 4, characterized in that: The energy storage turntable (13) is provided in two, and the two energy storage turntables (13) are axially spaced apart from the drive shaft (1), and the fixed pull shaft (17) is provided between the two energy storage turntables (13).

6. The commonly used backup power supply switching mechanism according to claim 1, characterized in that: The drive shaft (1) is fixedly provided with a drive gear (20) coaxial with it, and also includes a handle (21) corresponding to the drive gear (20). The handle (21) is provided with teeth (22) that mesh with the drive gear (20), and the handle (21) is rotatable.

Images