CN112038189A - Three-power-supply automatic change-over switch - Google Patents
Three-power-supply automatic change-over switch Download PDFInfo
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- CN112038189A CN112038189A CN202010835282.2A CN202010835282A CN112038189A CN 112038189 A CN112038189 A CN 112038189A CN 202010835282 A CN202010835282 A CN 202010835282A CN 112038189 A CN112038189 A CN 112038189A
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- electromagnet
- transverse sliding
- sliding strip
- strip
- slide bar
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
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Abstract
The invention discloses an automatic change-over switch for three power supplies, which comprises a shell, wherein a partition plate is arranged in the shell and divides the inner space of the shell into a first chamber and a second chamber; a first circuit breaker, a second circuit breaker and a third circuit breaker are arranged in the first cavity, a first handle is arranged on the first circuit breaker, a second handle is arranged on the second circuit breaker, a third handle is arranged on the third circuit breaker, and the first handle, the second handle and the third handle all extend into the second cavity; and a first electromagnet, a second electromagnet and a third electromagnet are arranged in the second chamber, the first electromagnet is used for driving the first handle to open or close the first circuit breaker, the second electromagnet is used for driving the second handle to open or close the second circuit breaker, and the third electromagnet is used for driving the third handle to open or close the third circuit breaker. The three-power-supply automatic transfer switch is reasonable in structure and overcomes the defects of high cost, low reliability and low safety of the three-power-supply automatic transfer switch in the prior art.
Description
Technical Field
The invention relates to an automatic change-over switch with three power supplies.
Background
In some industries and departments with higher requirements on power supply, a dual-power automatic transfer switch is generally adopted to control power supply. For specific places with very strict power supply requirements, such as hospitals, airports, telecommunication departments and the like, the requirements cannot be met generally when dual power supplies are adopted, and three power supplies are required to meet the requirements of the hospitals, airports, telecommunication departments on power supply, namely a main power supply, a first standby power supply and a second standby power supply. The prior art three-power automatic transfer switch is mostly composed of two-stage double-power automatic transfer devices. The input end of the first-stage double-power-supply automatic conversion device is a main power supply and a first standby power supply, the input end of the second-stage double-power-supply automatic conversion device is composed of the output end of the first-stage double-power-supply automatic conversion device and a second standby power supply, the output end of the second-stage double-power-supply automatic conversion device is connected with a load, and automatic conversion control of three paths of power supplies is achieved through the two-stage double-power-supply automatic. The actuating mechanism of the three-power-supply automatic change-over switch needs two sets of independent mechanical interlocking devices of the double-power-supply automatic change-over device, the number of the devices controlled by the three-power-supply automatic change-over switch is increased by the scheme, the use cost is increased, the use risk is increased, and the safety factor of the three-power-supply automatic change-over switch is reduced.
Disclosure of Invention
The invention aims to provide a three-power-supply automatic change-over switch which is reasonable in structure and overcomes the defects of high cost, low reliability and low safety of the three-power-supply automatic change-over switch in the prior art.
In order to achieve the purpose, the technical scheme of the invention is to design a three-power-supply automatic change-over switch, which comprises a shell, wherein a partition plate is arranged in the shell and divides the inner space of the shell into a first cavity and a second cavity;
a first circuit breaker, a second circuit breaker and a third circuit breaker are arranged in the first chamber, a first handle is arranged on the first circuit breaker, a second handle is arranged on the second circuit breaker, and a third handle is arranged on the third circuit breaker;
the second chamber is internally provided with a first electromagnet, a second electromagnet and a third electromagnet, the first electromagnet is fixed at the left end of the partition plate through a first bracket, the movable iron core of the first electromagnet is arranged towards the right, the movable iron core of the first electromagnet is connected with a first transverse sliding strip, the first transverse sliding strip is slidably connected to the partition plate, the top of the first transverse sliding strip is provided with a first push block, the first push block is provided with a first opening, the partition plate is provided with a first strip-shaped hole corresponding to the first push block, the first handle penetrates through the first strip-shaped hole and is placed in the first opening, the second electromagnet and the third electromagnet are fixed at the right end of the partition plate through a second bracket, the movable iron cores of the second electromagnet and the third electromagnet are arranged towards the left, the second electromagnet is positioned above the first electromagnet, and the movable iron core of the second electromagnet is connected with a second transverse sliding strip, the second transverse sliding strip is connected to the partition board in a sliding manner, a second push block is arranged at the top of the second transverse sliding strip, a second opening is formed in the second push block, a second strip-shaped hole corresponding to the second push block is formed in the partition board, the second handle penetrates through the second strip-shaped hole and is placed in the second opening, the third electromagnet is located below the first electromagnet, a movable iron core of the third electromagnet is connected with a third transverse sliding strip, the third transverse sliding strip is connected to the partition board in a sliding manner, a third push block is arranged at the bottom of the third transverse sliding strip, a third opening is formed in the third push block, a third strip-shaped hole corresponding to the third push block is formed in the partition board, the third handle penetrates through the third strip-shaped hole and is placed in the third opening, a first stop block corresponding to the second transverse sliding strip is arranged at the top of the right end of the first transverse sliding strip, and a second stop block corresponding to the third transverse sliding strip is arranged at the bottom of the right end of the first transverse sliding strip, a vertical slide bar is arranged between the second transverse slide bar and the third transverse slide bar and is connected to the partition board in a sliding manner, a first through hole corresponding to the vertical slide bar is formed in the second transverse slide bar, a second through hole corresponding to the vertical slide bar is formed in the third transverse slide bar, the upper end and the lower end of the vertical slide bar extend into the first through hole and the second through hole respectively, a first driven inclined plane and a second driven inclined plane are arranged at the upper end and the lower end of the vertical slide bar respectively, a first driving inclined plane corresponding to the first driven inclined plane is arranged on the hole wall of the first through hole, a second driving inclined plane corresponding to the second driven inclined plane is arranged on the hole wall of the second through hole, an upper convex block and a lower convex block are symmetrically arranged at the side part of the vertical slide bar, a fixed block positioned between the upper convex block and the lower convex block is arranged on the partition board, and an upper guide rod penetrating through the upper convex block is arranged, the upper lug is provided with a sliding hole for the upper guide rod to penetrate through, an upper spring sleeved on the upper guide rod is connected between the upper lug and the fixed block, the fixed block is provided with a lower guide rod penetrating through the lower lug, the lower lug is provided with a sliding hole for the lower guide rod to penetrate through, and a lower spring sleeved on the lower guide rod is connected between the lower lug and the fixed block;
a first manual operating rod, a second manual operating rod and a third manual operating rod are further arranged in the second chamber, the first manual operating rod is located below the first transverse sliding strip, the first manual operating rod is rotatably connected to the partition plate, a first gear is arranged on the first manual operating rod, a first rack meshed with the first gear is arranged at the bottom of the first transverse sliding strip, the second manual operating rod is located below the second transverse sliding strip, the second manual operating rod is rotatably connected to the partition plate, a second gear is arranged on the second manual operating rod, a second rack meshed with the second gear is arranged at the bottom of the second transverse sliding strip, the third manual operating rod is located above the third transverse sliding strip, the third manual operating rod is rotatably connected to the partition plate, and a third gear is arranged on the third manual operating rod, and a third rack meshed with a third gear is arranged at the top of the third transverse sliding strip.
Preferably, the length of the first strip-shaped hole, the length of the second strip-shaped hole and the length of the third strip-shaped hole are equal.
Preferably, the upper end of the upper guide rod is provided with an upper limiting block, and the lower end of the lower guide rod is provided with a lower limiting block.
Preferably, the first bracket and the second bracket are both L-shaped structures.
The invention has the advantages and beneficial effects that: the three-power-supply automatic change-over switch is reasonable in structure and overcomes the defects of high cost, low reliability and low safety of the three-power-supply automatic change-over switch in the prior art.
Under initial state, the movable iron cores of the first electromagnet, the second electromagnet and the third electromagnet are all in a retraction state, the first handle is located at the left end of the first strip-shaped hole, the second handle and the third handle are respectively located at the right ends of the second strip-shaped hole and the third strip-shaped hole, and the first circuit breaker, the second circuit breaker and the third circuit breaker are all located in a brake-separating state at the moment.
When a common power supply needs to be switched on, the movable iron core of the first electromagnet is controlled to extend out, so that the first transverse sliding strip is driven to slide rightwards, the first handle is pushed by the first push block to move to the right end of the first strip-shaped hole, the first circuit breaker is in a closing state at the moment, and the common power supply is switched on; and after the first transverse sliding strip slides rightwards, the first stop block and the second stop block on the first transverse sliding strip abut against the second transverse sliding strip and the third transverse sliding strip respectively, so that the second transverse sliding strip and the third transverse sliding strip cannot move leftwards, and the second circuit breaker and the third circuit breaker are locked in a brake-off state.
When a first standby power supply needs to be switched on, the movable iron core of the first electromagnet is controlled to retract, so that the first transverse sliding strip is driven to slide leftwards, the first handle is pushed by the first push block to move to the left end of the first strip-shaped hole, the first breaker is in a brake-off state at the moment, the common power supply is switched off, then the movable iron core of the second electromagnet is controlled to extend out, so that the second transverse sliding strip is driven to slide leftwards, the second handle is pushed by the second push block to move to the left end of the second strip-shaped hole, the second breaker is in a switch-on state at the moment, and the first standby power supply is switched on; after the second transverse sliding strip slides leftwards, the second transverse sliding strip abuts against the first stop block, therefore, the first transverse sliding strip cannot move rightwards, the first circuit breaker is locked in the opening state, in the process that the second transverse sliding strip slides leftwards, the vertical sliding strip is driven to move downwards through the matching of the first driving inclined plane and the first driven inclined plane, the upper end of the vertical sliding strip is made to exit from the first through hole and compress the upper spring and stretch the lower spring, the third transverse sliding strip can be blocked after the vertical sliding strip moves downwards, the third transverse sliding strip is prevented from moving leftwards, and therefore the third circuit breaker is also locked in the opening state.
When a second standby power supply needs to be switched on, the movable iron core of the second electromagnet is controlled to retract, so that the second transverse sliding strip is driven to slide rightwards, the second handle is pushed by the second push block to move to the right end of the second strip-shaped hole, the second circuit breaker is in a switching-off state at the moment, the first standby power supply is switched off, in the process that the second transverse sliding strip slides rightwards, the vertical sliding strip moves upwards under the action of elastic restoring force of the upper spring and the lower spring, the upper end of the vertical sliding strip is inserted into the first through hole, the vertical sliding strip releases the blocking of the third transverse sliding strip, then the movable iron core of the third electromagnet is controlled to extend out, so that the third transverse sliding strip is driven to slide leftwards, the third handle is pushed by the third push block to move to the left end of the third strip-shaped hole, the third circuit breaker is in a switching-on state at the moment, and the; after the third transverse sliding strip slides leftwards, the third transverse sliding strip abuts against the second stop block, so that the first transverse sliding strip cannot move rightwards, the first circuit breaker is locked in the brake-separating state, in the process that the third transverse sliding strip slides leftwards, the vertical sliding strip is driven to move upwards through the matching of the second driving inclined plane and the second driven inclined plane, the lower end of the vertical sliding strip is made to exit from the second through hole and compress the lower spring and stretch the upper spring, the second transverse sliding strip can be stopped after the vertical sliding strip moves upwards, the second transverse sliding strip is prevented from moving leftwards, and the second circuit breaker is also locked in the brake-separating state.
In addition, the first manual operating lever, the second manual operating lever and the third manual operating lever are arranged, so that the emergency power supply switching control device can be used for emergency power supply switching control when each electromagnet fails.
Drawings
FIG. 1 is a first schematic diagram of the present invention.
FIG. 2 is a second schematic of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The technical scheme of the specific implementation of the invention is as follows:
as shown in fig. 1 and 2, an automatic transfer switch for three power supplies comprises a housing 1, a partition plate 2 is arranged in the housing 1, and the partition plate 2 divides the inner space of the housing 1 into a first chamber and a second chamber;
a first circuit breaker, a second circuit breaker and a third circuit breaker are arranged in the first chamber, a first handle 3 is arranged on the first circuit breaker, a second handle 4 is arranged on the second circuit breaker, and a third handle 5 is arranged on the third circuit breaker;
a first electromagnet 6, a second electromagnet 7 and a third electromagnet 8 are arranged in the second chamber, the first electromagnet 6 is fixed at the left end of the partition plate 2 through a first support 9, a movable iron core of the first electromagnet 6 is arranged towards the right, the movable iron core of the first electromagnet 6 is connected with a first transverse sliding strip 10, the first transverse sliding strip 10 is slidably connected to the partition plate 2, a first push block 11 is arranged at the top of the first transverse sliding strip 10, a first opening is arranged on the first push block 11, a first strip-shaped hole 12 corresponding to the first push block 11 is arranged on the partition plate 2, the first handle 3 penetrates through the first strip-shaped hole 12 and is arranged in the first opening, the second electromagnet 7 and the third electromagnet 8 are fixed at the right end of the partition plate 2 through a second support 13, the movable iron cores of the second electromagnet 7 and the third electromagnet 8 are arranged towards the left, the second electromagnet 7 is positioned above the first electromagnet 6, the movable iron core of the second electromagnet 7 is connected with a second transverse sliding bar 14, the second transverse sliding bar 14 is slidably connected to the partition plate 2, a second push block 15 is arranged at the top of the second transverse sliding bar 14, a second opening is arranged on the second push block 15, a second strip-shaped hole 16 corresponding to the second push block 15 is arranged on the partition plate 2, the second handle 4 passes through the second strip-shaped hole 16 and is placed in the second opening, the third electromagnet 8 is positioned below the first electromagnet 6, the movable iron core of the third electromagnet 8 is connected with a third transverse sliding bar 17, the third transverse sliding bar 17 is slidably connected to the partition plate 2, a third push block 18 is arranged at the bottom of the third transverse sliding bar 17, a third opening is arranged on the third push block 18, a third strip-shaped hole 19 corresponding to the third push block 18 is arranged on the partition plate 2, the third handle 5 passes through the third strip-shaped hole 19 and is placed in the third opening, a first stop block 20 corresponding to the second transverse slide bar 14 is arranged at the top of the right end of the first transverse slide bar 10, a second stop block 21 corresponding to the third transverse slide bar 17 is arranged at the bottom of the right end of the first transverse slide bar 10, a vertical slide bar 22 is arranged between the second transverse slide bar 14 and the third transverse slide bar 17, the vertical slide bar 22 is connected to the partition board 2 in a sliding manner, a first through hole 23 corresponding to the vertical slide bar 22 is arranged on the second transverse slide bar 14, a second through hole 24 corresponding to the vertical slide bar 22 is arranged on the third transverse slide bar 17, the upper end and the lower end of the vertical slide bar 22 respectively extend into the first through hole 23 and the second through hole 24, a first driven inclined surface 25 and a second driven inclined surface 26 are respectively arranged at the upper end and the lower end of the vertical slide bar 22, and a first driving inclined surface 27 corresponding to the first driven inclined surface 26 is arranged on the hole wall of the first through hole 23, a second driving inclined plane 28 corresponding to the second driven inclined plane 26 is arranged on the hole wall of the second through hole 24, an upper lug 29 and a lower lug 30 are symmetrically arranged on the side part of the vertical slide bar 22, a fixed block 31 positioned between the upper lug 29 and the lower lug 30 is arranged on the partition plate 2, an upper guide rod 32 penetrating through the upper lug 29 is arranged on the fixed block 31, a sliding hole for the upper guide rod 32 to penetrate through is arranged on the upper lug 29, an upper spring 33 sleeved on the upper guide rod 32 is connected between the upper lug 29 and the fixed block 31, a lower guide rod 34 penetrating through the lower lug 30 is arranged on the fixed block 31, a sliding hole for the lower guide rod 34 to penetrate through is arranged on the lower lug 30, and a lower spring 35 sleeved on the lower guide rod 34 is connected between the lower lug 30 and the fixed block 31;
a first manual operating rod 36, a second manual operating rod 37 and a third manual operating rod 38 are further arranged in the second chamber, the first manual operating rod 36 is positioned below the first transverse slide bar 10, the first manual operating rod 36 is rotatably connected to the partition board 2, a first gear 39 is arranged on the first manual operating rod 36, a first rack 40 meshed with the first gear 39 is arranged at the bottom of the first transverse slide bar 10, the second manual operating rod 37 is positioned below the second transverse slide bar 14, the second manual operating rod 37 is rotatably connected to the partition board 2, a second gear 41 is arranged on the second manual operating rod 37, a second rack 42 meshed with the second gear 41 is arranged at the bottom of the second transverse slide bar 14, the third manual operating rod 38 is positioned above the third transverse slide bar 17, and the third manual operating rod 38 is rotatably connected to the partition board 2, and a third gear 43 is arranged on the third manual operating rod 38, and a third rack 44 meshed with the third gear 43 is arranged at the top of the third transverse slide bar 17.
The length of the first bar hole 12, the length of the second bar hole 16, and the length of the third bar hole 19 are equal to each other.
The upper end of the upper guide bar 32 is provided with an upper limit block 45, and the lower end of the lower guide bar 34 is provided with a lower limit block 46.
The first bracket 9 and the second bracket 13 are both L-shaped structures.
The invention has the advantages and beneficial effects that: the three-power-supply automatic change-over switch is reasonable in structure and overcomes the defects of high cost, low reliability and low safety of the three-power-supply automatic change-over switch in the prior art.
Under initial state, the movable iron cores of the first electromagnet 6, the second electromagnet 7 and the third electromagnet 8 are all in a retraction state, the first handle 3 is located at the left end of the first strip-shaped hole 12, the second handle 4 and the third handle 5 are respectively located at the right ends of the second strip-shaped hole 16 and the third strip-shaped hole 19, and at the moment, the first circuit breaker, the second circuit breaker and the third circuit breaker are all in a brake separating state.
When a common power supply needs to be switched on, the movable iron core of the first electromagnet 6 is controlled to extend out, so that the first transverse sliding strip 10 is driven to slide rightwards, the first handle 3 is pushed by the first push block 11 to move to the right end of the first strip-shaped hole 12, the first circuit breaker is in a closing state at the moment, and the common power supply is switched on; and after the first transverse slide bar 10 slides to the right, the first stop 20 and the second stop 21 on the first transverse slide bar 10 will abut against the second transverse slide bar 14 and the third transverse slide bar 17, respectively, so that the second transverse slide bar 14 and the third transverse slide bar 17 cannot move to the left, and the second breaker and the third breaker are locked in the opening state.
When a first standby power supply needs to be switched on, the movable iron core of the first electromagnet 6 is controlled to retract, so that the first transverse sliding strip 10 is driven to slide leftwards, the first handle 3 is pushed by the first push block 11 to move to the left end of the first strip-shaped hole 12, the first circuit breaker is in a brake-off state at the moment, a common power supply is switched off, then the movable iron core of the second electromagnet 7 is controlled to extend, so that the second transverse sliding strip 14 is driven to slide leftwards, the second handle 4 is pushed by the second push block 15 to move to the left end of the second strip-shaped hole 16, the second circuit breaker is in a switch-on state at the moment, and the first standby power supply is switched on; when the second transverse slide bar 14 slides leftwards, the second transverse slide bar 14 abuts against the first stop block 20, so that the first transverse slide bar 10 cannot move rightwards, and the first circuit breaker is locked in the opening state, and in the process that the second transverse slide bar 14 slides leftwards, the vertical slide bar 22 is driven to move downwards through the matching of the first driving inclined plane 27 and the first driven inclined plane 25, so that the upper end of the vertical slide bar 22 exits the first through hole 23 and compresses the upper spring 33 and the lower tension spring 35, and after the vertical slide bar 22 moves downwards, the third transverse slide bar 17 can be blocked, so that the third transverse slide bar 17 is prevented from moving leftwards, and therefore, the third circuit breaker is also locked in the opening state.
When the second standby power supply needs to be switched on, the movable iron core of the second electromagnet 7 is controlled to retract, so that the second transverse slide bar 14 is driven to slide rightwards, and the second handle 4 is pushed by the second push block 15 to move to the right end of the second strip-shaped hole 16, at the moment, the second breaker is in a brake-off state, the first standby power supply is disconnected, during the rightward sliding of the second horizontal slide 14, the vertical slide 22 will move upward under the elastic restoring force of the upper spring 33 and the lower spring 35, the upper end of the vertical slide 22 will be inserted into the first through hole 23, and the vertical slide bar 22 will release the blocking of the third transverse slide bar 17, and then the movable iron core of the third electromagnet 8 is controlled to extend out, thereby driving the third transverse slide bar 17 to slide leftwards, and pushing the third handle 5 to move to the left end of the third strip-shaped hole 19 through the third push block 18, at this time, the third breaker is in a closing state, and the second standby power supply is switched on; when the third transverse slide bar 17 slides to the left, the third transverse slide bar 17 abuts against the second stop 21, so that the first transverse slide bar 10 cannot move to the right, and the first circuit breaker is locked in the open state, and in the process that the third transverse slide bar 17 slides to the left, the vertical slide bar 22 is driven to move upwards through the matching of the second driving inclined plane 28 and the second driven inclined plane 26, so that the lower end of the vertical slide bar 22 exits the second through hole 24 and compresses the lower spring 35 and stretches the upper spring 33, and the second transverse slide bar 14 can be stopped after the vertical slide bar 22 moves upwards, so that the second transverse slide bar 14 is prevented from moving to the left, and therefore the second circuit breaker is also locked in the open state.
Further, the first manual operation lever 36, the second manual operation lever 37, and the third manual operation lever 38 are provided, so that the emergency power supply switching control in the case where each electromagnet fails can be performed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The three-power-supply automatic change-over switch is characterized by comprising a shell, wherein a partition plate is arranged in the shell and divides the inner space of the shell into a first chamber and a second chamber;
a first circuit breaker, a second circuit breaker and a third circuit breaker are arranged in the first chamber, a first handle is arranged on the first circuit breaker, a second handle is arranged on the second circuit breaker, and a third handle is arranged on the third circuit breaker;
the second chamber is internally provided with a first electromagnet, a second electromagnet and a third electromagnet, the first electromagnet is fixed at the left end of the partition plate through a first bracket, the movable iron core of the first electromagnet is arranged towards the right, the movable iron core of the first electromagnet is connected with a first transverse sliding strip, the first transverse sliding strip is slidably connected to the partition plate, the top of the first transverse sliding strip is provided with a first push block, the first push block is provided with a first opening, the partition plate is provided with a first strip-shaped hole corresponding to the first push block, the first handle penetrates through the first strip-shaped hole and is placed in the first opening, the second electromagnet and the third electromagnet are fixed at the right end of the partition plate through a second bracket, the movable iron cores of the second electromagnet and the third electromagnet are arranged towards the left, the second electromagnet is positioned above the first electromagnet, and the movable iron core of the second electromagnet is connected with a second transverse sliding strip, the second transverse sliding strip is connected to the partition board in a sliding manner, a second push block is arranged at the top of the second transverse sliding strip, a second opening is formed in the second push block, a second strip-shaped hole corresponding to the second push block is formed in the partition board, the second handle penetrates through the second strip-shaped hole and is placed in the second opening, the third electromagnet is located below the first electromagnet, a movable iron core of the third electromagnet is connected with a third transverse sliding strip, the third transverse sliding strip is connected to the partition board in a sliding manner, a third push block is arranged at the bottom of the third transverse sliding strip, a third opening is formed in the third push block, a third strip-shaped hole corresponding to the third push block is formed in the partition board, the third handle penetrates through the third strip-shaped hole and is placed in the third opening, a first stop block corresponding to the second transverse sliding strip is arranged at the top of the right end of the first transverse sliding strip, and a second stop block corresponding to the third transverse sliding strip is arranged at the bottom of the right end of the first transverse sliding strip, a vertical slide bar is arranged between the second transverse slide bar and the third transverse slide bar and is connected to the partition board in a sliding manner, a first through hole corresponding to the vertical slide bar is formed in the second transverse slide bar, a second through hole corresponding to the vertical slide bar is formed in the third transverse slide bar, the upper end and the lower end of the vertical slide bar extend into the first through hole and the second through hole respectively, a first driven inclined plane and a second driven inclined plane are arranged at the upper end and the lower end of the vertical slide bar respectively, a first driving inclined plane corresponding to the first driven inclined plane is arranged on the hole wall of the first through hole, a second driving inclined plane corresponding to the second driven inclined plane is arranged on the hole wall of the second through hole, an upper convex block and a lower convex block are symmetrically arranged at the side part of the vertical slide bar, a fixed block positioned between the upper convex block and the lower convex block is arranged on the partition board, and an upper guide rod penetrating through the upper convex block is arranged, the upper lug is provided with a sliding hole for the upper guide rod to penetrate through, an upper spring sleeved on the upper guide rod is connected between the upper lug and the fixed block, the fixed block is provided with a lower guide rod penetrating through the lower lug, the lower lug is provided with a sliding hole for the lower guide rod to penetrate through, and a lower spring sleeved on the lower guide rod is connected between the lower lug and the fixed block;
a first manual operating rod, a second manual operating rod and a third manual operating rod are further arranged in the second chamber, the first manual operating rod is located below the first transverse sliding strip, the first manual operating rod is rotatably connected to the partition plate, a first gear is arranged on the first manual operating rod, a first rack meshed with the first gear is arranged at the bottom of the first transverse sliding strip, the second manual operating rod is located below the second transverse sliding strip, the second manual operating rod is rotatably connected to the partition plate, a second gear is arranged on the second manual operating rod, a second rack meshed with the second gear is arranged at the bottom of the second transverse sliding strip, the third manual operating rod is located above the third transverse sliding strip, the third manual operating rod is rotatably connected to the partition plate, and a third gear is arranged on the third manual operating rod, and a third rack meshed with a third gear is arranged at the top of the third transverse sliding strip.
2. The automatic transfer switch of claim 1, wherein the first, second and third apertures are of equal length.
3. The automatic transfer switch of claim 2, wherein the upper end of the upper guide rod is provided with an upper limit block, and the lower end of the lower guide rod is provided with a lower limit block.
4. The automatic transfer switch of claim 3, wherein the first and second brackets are each an L-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010835282.2A CN112038189B (en) | 2020-08-19 | 2020-08-19 | Three-power-supply automatic change-over switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010835282.2A CN112038189B (en) | 2020-08-19 | 2020-08-19 | Three-power-supply automatic change-over switch |
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| CN112038189A true CN112038189A (en) | 2020-12-04 |
| CN112038189B CN112038189B (en) | 2022-02-18 |
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| CN202010835282.2A Active CN112038189B (en) | 2020-08-19 | 2020-08-19 | Three-power-supply automatic change-over switch |
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| CN112038189B (en) | 2022-02-18 |
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