CN219086875U - Dual-power bus-tie switching device - Google Patents

Abstract

The utility model relates to the field of dual-power supply bus-tie switching devices, and discloses a dual-power supply bus-tie switching device which comprises two switching units, wherein the two switching units comprise a shell, two support rods are fixedly arranged in the shell, a first rotating shaft is movably inserted on each support rod, a first four-corner sleeve is fixedly arranged at one end of each first rotating shaft, and a first four-corner inserting rod is fixedly arranged at the other end of each first rotating shaft. According to the utility model, through the first four-corner sleeve, the second four-corner sleeve, the first four-corner inserting rod and the second four-corner inserting rod, the problem that the wiring end of the existing dual-power bus-tie switching device cannot have a parallel connection mode and a vertical connection mode, and convenience cannot be created for field installation of a user can be solved, and the problem that the existing dual-power bus-tie switching device is inconvenient to install the device on an installation guide rail or remove the device from the installation guide rail can be solved through the movable rod and the strip-shaped through hole.

Description

Dual-power bus-tie switching device

Technical Field

The utility model relates to the field of dual-power bus-tie switching devices, in particular to a dual-power bus-tie switching device.

Background

The continuous and reliable power supply is a basic condition for safe operation of electric equipment, so that two paths of power supply sources are generally configured in occasions with higher requirements on the power supply reliability, and the successful rapid switching between the two paths of power supply sources is the key of continuous and uninterrupted power supply, so that a double-power-supply bus-tie switching device is generated.

The wiring terminals of the existing dual-power bus-tie switching device in the market are arranged side by side and up and down so as to adapt to different installation requirements of an installation site, but the wiring terminals of the existing dual-power bus-tie switching device cannot have the two connection modes, so that convenience can not be created for the site installation of a user, and secondly, the existing dual-power bus-tie switching device has the problem that the installation of the device on an installation guide rail or the detachment of the device from the installation guide rail is inconvenient.

Disclosure of Invention

The utility model mainly aims to provide a dual-power bus-tie switching device, which can effectively solve the problems that the wiring terminals of the existing dual-power bus-tie switching device cannot have parallel connection modes and up-down connection modes and cannot create convenience for field installation of users, and the existing dual-power bus-tie switching device has inconvenience in installing the device on an installation guide rail or removing the device from the installation guide rail.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a dual supply female auto-change over device that allies oneself with, includes two switching element, two switching element is all including the casing, the inside fixed mounting of casing has two bracing pieces, two all movable grafting has first pivot on the bracing piece, the one end fixed mounting of first pivot has first four corners sleeve pipe, the other end fixed mounting of first pivot has first four corners inserted bar, the inside fixed mounting of casing has the support frame, movable grafting has the second pivot on the support frame, one end fixed mounting of second pivot has the second four corners sleeve pipe, the other end fixed mounting of second pivot has the second four corners inserted bar, fixed the cup joint turbine in the first pivot, fixed the cup joint worm in the second pivot, turbine and worm meshing are connected.

Further, the internal structures of the two switching units are the same, the first four-corner sleeve pipe is movably inserted through one side of the shell, the first four-corner inserting rod is movably inserted through the other side of the shell, the second four-corner sleeve pipe is movably inserted through the lower side of the shell, the second four-corner inserting rod is movably inserted through the upper side of the shell, the first four-corner sleeve pipe in the two switching units can be mutually movably sleeved on the first four-corner inserting rod of the other switching unit, and the second four-corner sleeve pipe in the two switching units can be mutually movably sleeved on the second four-corner inserting rod of the other switching unit.

Further, two second four corners inserted bars in the switching unit are all movably sleeved with a spanner, and the shell of the two switching units are all provided with observation through holes.

Further, two slide bars are fixedly installed in the shell, two slide bars are respectively arranged on one sides of two support rods, two movable plates are movably inserted into the slide bars, two first springs are movably sleeved on the slide bars, one ends of the first springs are movably abutted to the shell, the other sides of the first springs are movably abutted to one sides of the movable plates, the movable plates extend to between the two support rods, two convex plates are fixedly installed on the outer circumferential surface of the first rotating shaft, and the two convex plates are oppositely arranged in a hundred eighty degrees.

Further, four connection copper plates are fixedly installed on the movable plate, four connection copper plates are arranged at equal intervals, four access copper plates and four output copper plates are respectively inserted into two sides of the shell, four access copper plates and four output copper plates are respectively arranged at equal intervals, four access copper plates and four output copper plates are respectively inserted into the shell, and the two ends of the four connection copper plates are respectively corresponding to the two ends of the four connection copper plates.

Further, a connecting cylinder is fixedly installed on one side of the inside of the shell, a plug pin is movably inserted in the connecting cylinder, abutting plates are fixedly installed on the upper side and the lower side of the plug pin, a second spring is movably sleeved on the circumferential outer surface of the connecting cylinder, one end of the second spring is movably abutted on the shell, the other end of the second spring is movably abutted on two second springs, a rotary table is fixedly inserted in the second rotary shaft, two first clamping grooves and two second clamping grooves are respectively formed in the circumferential surface interface of the rotary table, two first clamping grooves are oppositely arranged in one hundred and eighty degrees, two second clamping grooves are oppositely arranged in one hundred and eighty degrees, two first clamping grooves and two second clamping grooves are respectively staggered, and one end of the plug pin can be respectively inserted into the two first clamping grooves and the two second clamping grooves.

Further, the upside fixed mounting of casing has the connecting plate, connecting plate cross-section figure is "T" type structure, the spread groove has been seted up to the downside of casing, the inside bottom side fixed mounting of casing has two dead lever groups, and two dead lever groups all include two dead levers, the inside of casing corresponds the position of two dead lever groups and is provided with the movable rod respectively, two the bar through-hole has all been seted up at the both ends of movable rod, two movable rod's both ends that pass through in the dead lever group respectively the activity are all offered the bar through-hole, two one side of movable rod is fixed mounting has two third springs, four the one end of third spring all with casing fixed connection, two mounting holes have been seted up respectively to the downside of casing corresponds the position of two movable rods, two the downside of movable rod is fixed mounting has two joint boards, four the joint board sets up the inside of four mounting holes respectively, two the upside of movable rod is fixed mounting has the transmission pole respectively, two the transmission pole is crossed to two.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, through the first four-corner sleeve, the second four-corner sleeve, the first four-corner inserted rod and the second four-corner inserted rod, the problem that the wiring end of the existing dual-power bus-tie switching device cannot have a parallel and up-down arrangement connection mode and convenience can not be created for the site installation of a user can be solved, through the first four-corner sleeve and the first four-corner inserted rod, the first rotating shafts of the two switching units can be simultaneously rotated, further after the two tangent units of the device are stacked together to realize the up-down arrangement of the wiring end, the two first rotating shafts can be simultaneously rotated, the components in the two switching units can be simultaneously operated, further the switching of dual power is realized, through the second four-corner sleeve and the second four-corner inserted rod, the second rotating shafts of the two switching units can be simultaneously rotated, further after the two switching units of the device are parallel together to realize the parallel arrangement of the wiring end, the two second rotating shafts can be simultaneously operated, further the switching of the dual power is realized, and the dual-power bus-tie switching device has the advantages that the parallel and the two switching units are not arranged.

2. Through movable rod and bar through-hole that set up, can solve current dual supply female switching device and install the installation guide rail with the device on or demolish the device from the installation guide rail and all have inconvenient problem, when using, press into the inside of casing with two transfer levers of switching unit, two transfer levers in the second switching unit can drive two movable rods respectively and remove, and drive two joint boards that install on the two movable rods and remove, then on the spread rail is connected to through the spread groove joint of second switching unit, and loosen two movable rods, make the joint board card of switching unit insert the spread rail on, the installation of this device switching unit has just been accomplished, when needing to dismantle this device, equally with two transfer levers press into the inside of casing simultaneously, switching unit can be taken off from the installation guide rail.

None of the parts of the device are the same as or can be implemented using prior art.

Drawings

Fig. 1 is a schematic diagram of a stacked state of two tangent units of a dual-power bus-tie switching device according to the present utility model.

Fig. 2 is a schematic diagram of the other side of the stacked state of two tangent units of the dual-power bus-tie switching device of the present utility model.

Fig. 3 is a schematic diagram showing parallel arrangement of two switching units of a dual-power bus switching device according to the present utility model.

Fig. 4 is a cross-sectional view of a switching unit of a dual power bus switching device according to the present utility model.

Fig. 5 is a cross-sectional view of the other side of the switching unit of the dual power bus switching device of the present utility model.

Fig. 6 is a front cross-sectional view of a switching unit of a dual power bus switching device according to the present utility model.

Fig. 7 is an enlarged view of a portion a of fig. 4 of a dual power bus switching device according to the present utility model.

In the figure: 1. a switching unit; 2. a housing; 3. a support rod; 4. a support frame; 5. a first rotating shaft; 6. a second rotating shaft; 7. a first tetragonal sleeve; 8. a second quadrangular sleeve; 9. a first quadrangle inserting rod; 10. a second four-corner inserting rod; 11. a turbine; 12. a worm; 13. a convex plate; 14. a slide bar; 15. a movable plate; 16. connecting a copper plate; 17. accessing a copper plate; 18. outputting a copper plate; 19. a connecting cylinder; 20. a plug pin; 21. an abutting plate; 22. a first spring; 23. a second spring; 24. a third spring; 25. a turntable; 26. a first clamping groove; 27. a second clamping groove; 28. observing the through hole; 29. a connecting plate; 30. a connecting groove; 31. a mounting hole; 32. a fixed rod; 33. a movable rod; 34. a bar-shaped through hole; 35. a clamping plate; 36. a transmission rod; 37. and (5) a spanner.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1 and fig. 2, a dual-power bus-tie switching device comprises two switching units 1, wherein the two switching units 1 comprise a shell 2, two support rods 3 are fixedly installed in the shell 2, a first rotating shaft 5 is movably inserted on the two support rods 3, one end of the first rotating shaft 5 is fixedly provided with a first four-corner sleeve 7, the other end of the first rotating shaft 5 is fixedly provided with a first four-corner inserting rod 9, a supporting frame 4 is fixedly installed in the shell 2, a second rotating shaft 6 is movably inserted on the supporting frame 4, one end of the second rotating shaft 6 is fixedly provided with a second four-corner sleeve 8, the other end of the second rotating shaft 6 is fixedly provided with a second four-corner inserting rod 10, a turbine 11 is fixedly sleeved on the first rotating shaft 5, a worm 12 is fixedly sleeved on the second rotating shaft 6, and the turbine 11 is in meshed connection with the worm 12.

The internal structure of the two switching units 1 is the same, the first four-corner sleeve 7 is movably inserted through one side of the shell 2, the first four-corner inserting rod 9 is movably inserted through the other side of the shell 2, the second four-corner sleeve 8 is movably inserted through the lower side of the shell 2, the second four-corner inserting rod 10 is movably inserted through the upper side of the shell 2, the first four-corner sleeve 7 in the two switching units 1 can be mutually movably sleeved on the first four-corner inserting rod 9 of the other switching unit 1, and the second four-corner sleeve 8 in the two switching units 1 can be mutually movably sleeved on the second four-corner inserting rod 10 of the other switching unit 1.

The wrench 37 is movably sleeved on the second four-corner inserting rod 10 in the two switching units 1, the observing through holes 28 are formed in the shells 2 of the two switching units 1, the set wrench 37 can be taken down from the second four-corner inserting rod 10, and a user can observe the internal conditions of the switching units 1 conveniently through the set observing through holes 28.

The inside fixed mounting of casing 2 has two slide bars 14, two slide bars 14 set up respectively in one side of two bracing pieces 3, two slide bars 14 all activity grafting has fly leaf 15, first spring 22 has all been cup jointed to the activity on two slide bars 14, the one end of two first springs 22 all activity butt is on casing 2, the opposite side of two first springs 22 all activity butt is in one side of fly leaf 15, fly leaf 15 extends to between two bracing pieces 3, fixed mounting has two flange 13 on the circumference surface of first pivot 5, two flange 13 are one hundred eighty degrees opposition setting, through the first spring 22 of setting, and by the elasticity effect of first spring 22, can promote fly leaf 15 to the opposite direction in position of first spring 22 place all the time.

Four connecting copper plates 16 are fixedly mounted on the movable plate 15, the four connecting copper plates 16 are arranged at equal intervals, four connecting copper plates 17 and four output copper plates 18 are respectively inserted into two sides of the shell 2, the four connecting copper plates 17 and the four output copper plates 18 are respectively arranged at equal intervals, the four connecting copper plates 17 and the four output copper plates 18 are respectively inserted into the shell 2, the two ends of the four connecting copper plates 16 respectively correspond to each other, and the four connecting copper plates 16, the four connecting copper plates 17 and the four output copper plates 18 can conduct electricity through the conductivity of copper.

The inside one side fixed mounting of casing 2 has connecting cylinder 19, the inside activity grafting of connecting cylinder 19 has bolt 20, the upside and the downside of bolt 20 are all fixed mounting and are pressed against board 21, the activity has cup jointed second spring 23 on the circumference surface of connecting cylinder 19, the one end activity butt of second spring 23 is on casing 2, the other end activity butt of second spring 23 is on two second springs 23, fixed grafting has carousel 25 on the second pivot 6, two first draw-in grooves 26 and two second draw-in grooves 27 have been seted up respectively on the circumference outward appearance interface of carousel 25, two first draw-in grooves 26 are one hundred eighty degrees opposition setting, two second draw-in grooves 27 are one hundred eighty degrees opposition setting, two first draw-in grooves 26 and two second draw-in grooves 27 are crisscross setting respectively, the one end of bolt 20 can insert respectively in two first draw-in grooves 26 and two second draw-in grooves 27, through the second spring 23's that sets up elastic action, can make two draw-in grooves 26 and two second draw-in grooves 27 through the position that two 21 push 20 to move to 25 place, and make two second draw-in grooves 26 and two second draw-in grooves respectively.

The upper side fixed mounting of casing 2 has connecting plate 29, connecting plate 29 cross-section figure is "T" type structure, connecting groove 30 has been seted up to the downside of casing 2, two dead lever 32 group has been seted up to the inside bottom side fixed mounting of casing 2, two dead lever 32 group all includes two dead levers 32, the inside of casing 2 corresponds the position of two dead lever 32 group and is provided with movable rod 33 respectively, bar through-hole 34 has all been seted up at the both ends of two movable rods 33, bar through-hole 34 has all been seted up to the both ends of two movable rods 33 respectively to two dead levers 32 in the two dead lever 32 group activity, one side of two movable rods 33 all fixed mounting has two third springs 24, two mounting holes 31 have been seted up respectively to the position of four third springs 24 all with casing 2 fixed connection, the downside of casing 2 corresponds two movable rods 33 all fixed mounting has two joint plates 35, four joint plates 35 set up the inside of four mounting holes 31 respectively, the upside of two movable rods 33 all fixed mounting has transmission rod 36, two transmission rod 36 have been installed to alternate the big shape of two guide rail of two movable rods 33 respectively, the big guide rail of installation of casing 2 is little.

It should be noted that, before using, the present utility model is a dual-power bus-bar switching device, firstly, if two switching units 1 are required to be stacked together to install the device, in the first step, the first switching unit 1 is stacked on the upper side of the second switching unit 1, before stacking, a wrench 37 in the first switching unit 1 is required to be pulled to drive a second rotating shaft 6 and a second four-corner inserting rod 10 to rotate, the rotation of the second rotating shaft 6 and the second four-corner inserting rod 10 drives a turntable 25 to move, then a user is required to observe that a plug pin 20 is inserted into a first clamping groove 26 formed on the turntable 25 through an observation through hole 28, simultaneously the rotating second rotating shaft 6 drives a worm 12 to rotate, and the worm 12 and a turbine 11 are engaged and connected, the worm 12 can drive the turbine 11 and the first rotating shaft 5 to rotate by taking the first rotating shaft 5 as an axis, the first rotating shaft 5 can drive the convex plate 13 to abut against the movable plate 15, so that the movable plate 15 moves downwards, the movement of the movable plate 15 can drive the four connecting copper plates 16 to abut against the four copper access plates 17 and the four copper output plates 18 respectively, then a user can stop pulling the wrench 37 of the first switching unit 1, then the wrench 37 in the second switching unit 1 needs to be pulled to drive the second rotating shaft 6 and the second four-corner inserting rod 10 to rotate, the rotation of the second rotating shaft 6 and the second four-corner inserting rod 10 can drive the turntable 25 to move, and then the user needs to observe that the plug pin 20 is inserted into the second clamping groove 27 formed in the turntable 25 through the observation through hole 28, so that the wrench 37 of the second switching unit 1 can be stopped;

the second step is to take down the wrench 37 of the second switching unit 1 from the second quadrangle inserting rod 10, then press the two transmission rods 36 of the first switching unit 1 into the interior of the shell 2, the two transmission rods 36 in the first switching unit 1 can drive the two movable rods 33 therein to move respectively, and drive the two clamping plates 35 installed on the two movable rods 33 to move, then stack the first switching unit 1 on the upper side of the second switching unit 1, so that the connecting plate 29 of the second switching unit 1 is clamped into the interior of the connecting groove 30 in the first switching unit 1, simultaneously, the second quadrangle sleeve 8 in the first switching unit 1 is ensured to be sleeved on the second quadrangle inserting rod 10 of the second switching unit 1, then the two transmission rods 36 in the first switching unit 1 are released, the four third springs 24 in the first switching unit 1 can push the two movable rods 33 therein to move respectively, the two movable rods 33 drive the clamping plates 35 to be clamped on the connecting plate 29 of the second switching unit 1, so that the connection of the two switching units 1 is completed, then the two transmission rods 36 of the second switching unit 1 are pressed into the shell 2 at the same time, the two transmission rods 36 in the second switching unit 1 can respectively drive the two movable rods 33 to move, the two clamping plates 35 arranged on the two movable rods 33 are driven to move, then the two movable rods 33 are clamped on the mounting guide rail through the connecting grooves 30 of the second switching unit 1, the two movable rods 33 are loosened, the clamping plates 35 of the second switching unit 1 are clamped on the mounting guide rail, then two paths of input power sources are respectively connected on the copper plates 17 of the two switching units 1, the output copper plates 18 on the two switching units 1 are connected one by one, and connecting the output copper plates 18 connected together to an output power supply;

when in use, according to the operation of the device, the input circuit of the first switching unit 1 is communicated with the output power supply, if the input circuit of the second switching unit 1 is communicated with the output power supply, a user pulls the wrench 37 in the first switching unit 1 to drive the second rotating shaft 6 and the second four-corner inserting rod 10 in the first switching unit 1 to rotate, the second rotating shaft 6 in the first switching unit 1 drives the second four-corner inserting rod 10 and the second rotating shaft 6 in the second switching unit 1 to rotate through the second four-corner sleeve 8, the rotation of the two second rotating shafts 6 drives the two turntables 25 to move, then the user observes the plug pin 20 to be inserted into the second clamping groove 27 arranged on the turntables 25 through the observation through holes 28 in the first switching unit 1, simultaneously, the worm 12 in the first switching unit 1 drives the worm wheel 11 and the first rotating shaft 5 to rotate by taking the first rotating shaft 5 as an axis, the first rotating shaft 5 drives the convex plate 13 to be separated from the connection with the movable plate 15, the movable plate 15 is driven by the first spring 22 to move upwards and drive the four connecting copper plates 16 to be separated from the connection with the four connecting copper plates 17 and the four output copper plates 18 respectively, the second rotating shaft 6 rotating in the second switching unit 1 drives the worm 12 to rotate, the worm 12 is meshed with the convex plate 13 and connected, the worm 12 can drive the worm wheel 11 and the first rotating shaft 5 to rotate by taking the first rotating shaft 5 as an axis, the first rotating shaft 5 drives the convex plate 13 to abut against the movable plate 15, the movable plate 15 moves downwards, the movable plate 15 moves drives the four connecting copper plates 16 to abut against the four connecting copper plates 17 and the four output copper plates 18 respectively, then a user can stop pulling the wrench 37 of the first switching unit 1, at this time, the input circuit of the second switching unit 1 is communicated with the output power supply, so that the connection of two paths of input power supplies is completed;

if two switching units 1 are required to be juxtaposed together for installing the device, the first step is to pull a wrench 37 in the first switching unit 1 before stacking so as to drive a second rotating shaft 6 and a second four-corner inserting rod 10 to rotate, the rotation of the second rotating shaft 6 and the second four-corner inserting rod 10 can drive a turntable 25 to move, then a user is required to observe that a plug 20 is inserted into a first clamping groove 26 formed in the turntable 25 through an observation through hole 28, meanwhile, the rotating second rotating shaft 6 can drive a worm 12 to rotate, the worm 12 is in meshed connection with a turbine 11, the worm 12 can drive the turbine 11 and the first rotating shaft 5 to rotate by taking the first rotating shaft 5 as an axis, the first rotating shaft 5 can drive a convex plate 13 to abut against a movable plate 15 to move downwards, the movement of the movable plate 15 can drive four connecting copper plates 17 and four output copper plates 18 respectively, then a user can stop pulling the wrench 37 in the first switching unit 1, and then the wrench 37 in the second switching unit 1 is required to drive the second rotating shaft 6 and the second four-corner inserting rod 10 to rotate, and the plug 25 is required to rotate through the second rotating shaft 10 to drive the plug 25 to rotate through the observation through hole 28, and the plug 25 is required to be inserted into the rotating disc 25 to rotate by the second rotating shaft 10 to rotate, and the plug 25 is required to be driven to rotate by the second rotating shaft 10 to rotate;

the second step is to press two transmission rods 36 in the two switching units 1 into the shell 2, the two transmission rods 36 in the two switching units 1 can respectively drive two movable rods 33 in the two switching units to move, and drive two clamping plates 35 arranged on the two movable rods 33 to move, then the two transmission rods 36 are simultaneously clamped onto the mounting guide rail through the connecting grooves 30 of the two switching units 1, the two movable rods 33 of the two switching units 1 are loosened, the clamping plates 35 of the two switching units 1 are clamped onto the mounting guide rail, then the two switching units 1 are mutually abutted, the first four-corner sleeve pipes 7 in the first switching unit 1 are sleeved onto the first four-corner inserting rods 9 in the second switching unit 1 or the first four-corner sleeve pipes 7 in the second switching unit 1 are sleeved onto the first four-corner inserting rods 9 in the first switching unit 1, then the two input power sources are respectively connected onto the copper plates 17 of the two switching units 1, the output 18 on the two switching units 1 are connected one by one, and the output 18 are connected together and the output power sources 18 are connected;

when in use, according to the operation of the device, the input circuit of the first switching unit 1 is communicated with the output power supply, if the input circuit of the second switching unit 1 is communicated with the output power supply, a user is required to pull the wrench 37 in the two switching units 1 at the same time to drive the second rotating shaft 6 and the second four-corner inserting rod 10 in the two switching units 1 to rotate, then the user is required to observe the inserting pin 20 to be inserted into the second clamping groove 27 formed on the rotating disc 25 through the observation through hole 28 in the first switching unit 1, meanwhile, the worm 12 in the first switching unit 1 drives the turbine 11 and the first rotating shaft 5 to rotate by taking the first rotating shaft 5 as an axis, the first rotating shaft 5 drives the convex plate 13 to be disconnected with the movable plate 15, the movable plate 15 is driven by the first spring 22 to move upwards, and drive four connection copper 16 break away from respectively with four access copper 17 and four output copper 18, and the user observes through the observation through-hole 28 in second switching unit 1 and inserts in the first draw-in groove 26 that opens on carousel 25, the rotatory second pivot 6 in the second switching unit 1 can drive worm 12 and rotate, by worm 12 and flange 13 meshing connection, worm 12 can drive turbine 11 and first pivot 5 and regard first pivot 5 as the axle rotation, first pivot 5 can drive flange 13 butt fly leaf 15 downwardly moving, the removal of fly leaf 15 can drive four connection copper 16 butt respectively on four access copper 17 and four output copper 18, then the user can stop to pull the input circuit of two switching units 1 and communicate when exporting the power, and then the connection of two paths of input power has been accomplished.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a dual supply bus allies oneself with auto-change over device, includes two switching element (1), its characterized in that: the two switching units (1) comprise a shell (2), two supporting rods (3) are fixedly arranged in the shell (2), a first rotating shaft (5) is movably inserted in the supporting rods (3), a first four-corner sleeve (7) is fixedly arranged at one end of the first rotating shaft (5), a first four-corner inserting rod (9) is fixedly arranged at the other end of the first rotating shaft (5), a supporting frame (4) is fixedly arranged in the shell (2), a second rotating shaft (6) is movably inserted in the supporting frame (4), a second four-corner sleeve (8) is fixedly arranged at one end of the second rotating shaft (6), a second four-corner inserting rod (10) is fixedly arranged at the other end of the second rotating shaft (6), a turbine (11) is fixedly sleeved on the first rotating shaft (5), a worm (12) is fixedly sleeved on the second rotating shaft (6), and the turbine (11) is meshed with the worm (12).

2. The dual power bus bar switching device according to claim 1, wherein: the two internal structures of the switching units (1) are the same, the first four-corner sleeve (7) is movably inserted through one side of the shell (2), the first four-corner inserting rod (9) is movably inserted through the other side of the shell (2), the second four-corner sleeve (8) is movably inserted through the lower side of the shell (2), the second four-corner inserting rod (10) is movably inserted through the upper side of the shell (2), the first four-corner sleeve (7) in the two switching units (1) can be movably sleeved on the first four-corner inserting rod (9) of the other switching unit (1), and the second four-corner sleeve (8) in the two switching units (1) can be movably sleeved on the second four-corner inserting rod (10) of the other switching unit (1).

3. The dual power bus bar switching device according to claim 2, wherein: a wrench (37) is movably sleeved on the second four-corner inserted rod (10) in the two switching units (1), and the shell (2) of the two switching units (1) is provided with an observation through hole (28).

4. A dual power bus bar switching device according to claim 3, wherein: the inside fixed mounting of casing (2) has two slide bars (14), two slide bars (14) set up respectively in one side of two bracing pieces (3), two slide bars (14) all activity grafting has fly leaf (15), two all activity has cup jointed first spring (22) on slide bars (14), two the one end of first spring (22) all activity butt is on casing (2), two the opposite side of first spring (22) all activity butt is in one side of fly leaf (15), fly leaf (15) extend to between two bracing pieces (3), fixed mounting has two flange (13) on the circumference surface of first pivot (5), two flange (13) are one hundred eighty degrees opposite settings.

5. The dual power bus bar switching device as set forth in claim 4, wherein: four connecting copper plates (16) are fixedly installed on the movable plate (15), four connecting copper plates (16) are arranged at equal intervals, four connecting copper plates (17) and four output copper plates (18) are respectively inserted into two sides of the shell (2), the four connecting copper plates (17) and the four output copper plates (18) are respectively arranged at equal intervals, and the four connecting copper plates (17) and the four output copper plates (18) are respectively inserted into the shell (2) and correspond to two ends of the four connecting copper plates (16).

6. A dual power bus bar switching device according to claim 3, wherein: the inside one side fixed mounting of casing (2) has connecting cylinder (19), the inside activity grafting of connecting cylinder (19) has bolt (20), the upside and the equal fixed mounting of downside of bolt (20) have butt board (21), second spring (23) have been cup jointed in the activity on the circumference surface of connecting cylinder (19), the one end activity butt of second spring (23) is on casing (2), the other end activity butt of second spring (23) is on two second springs (23), fixed grafting has carousel (25) on second pivot (6), two first draw-in groove (26) and two second draw-in grooves (27) have been seted up respectively on the circumference outward appearance interface of carousel (25), two first draw-in groove (26) are one hundred eighty degrees opposition setting, two second draw-in groove (27) are one hundred eighty degrees setting, two first draw-in groove (26) and two second draw-in grooves (27) are crisscross setting respectively, but two draw-in grooves (27) are inserted respectively to two first one end of inserting bolt (20).

7. The dual power bus bar switching device as set forth in claim 6, wherein: the upper side of casing (2) fixed mounting has connecting plate (29), connecting plate (29) cross-section figure is "T" type structure, connecting groove (30) have been seted up to the downside of casing (2), the inside bottom side fixed mounting of casing (2) has two dead lever (32) groups, and two dead lever (32) group all includes two dead levers (32), the inside of casing (2) corresponds the position of two dead lever (32) groups and is provided with movable rod (33) respectively, two bar through-hole (34) have all been seted up at the both ends of movable rod (33), two dead levers (32) in the dead lever (32) group are respectively movable to alternate bar through-hole (34) have all been seted up at the both ends of two movable rods (33), two one side of movable rod (33) is all fixed mounting has two third springs (24), four the one end of third spring (24) all is connected with casing (2) fixed connection, the downside of casing (2) corresponds two movable rod (32) positions and is provided with movable rod (33) respectively, two joint plates (35) have been installed in two side two movable rod (33) respectively, two joint plates (35) have two movable rod (33) are installed respectively, the two transmission rods (36) are respectively inserted through the shell (2).

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