SUMMERY OF THE UTILITY MODEL
The application aims to provide an operating mechanism and a rotary isolating switch, the operating mechanism introduces a plastic shell type four-bar mechanism with stable breaking and tripping performance, and keeps consistent with the appearance characteristic and the operating mode of the traditional isolating switch through the conversion of a middle mechanism.
The embodiment of the application is realized as follows:
one aspect of the embodiments of the present application provides an operating mechanism, which includes a housing, wherein a middle mechanism and a plastic shell type four-bar linkage mechanism are arranged in the housing, the plastic shell type four-bar linkage mechanism is connected with a rotating shaft for driving a contact of a switching device, and the middle mechanism is used for connecting a handle; and the middle mechanism drives the plastic shell type four-bar mechanism to act by operating the handle so as to drive the contact to be switched on and off through the rotating shaft.
Optionally, one side of the middle mechanism is further connected with an energy storage mechanism, the energy storage mechanism includes a supporting plate linked with the rotating shaft, one end of the supporting plate is arranged on the housing through a rotating shaft, a torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring are respectively connected with the housing and the supporting plate.
Optionally, one side of the plastic shell type four-bar mechanism is further connected with a remote tripping mechanism, and the remote tripping mechanism is connected with the plastic shell type four-bar mechanism through a primary unlocking rod.
Optionally, the remote tripping mechanism is a magnetic flux reset structure, or the remote tripping mechanism is a shunt excitation reset structure.
Optionally, the center of the handle and the center of the shaft coincide.
Optionally, a side plate is arranged in the shell, the middle mechanism comprises a handle torsion piece rotatably connected to the side plate and a rotating piece coaxially arranged with the handle torsion piece, the rotating piece is sequentially rotatably connected with a first connecting rod and a supporting frame, the supporting frame is connected with the plastic shell type four-bar mechanism, and the rotating piece, the first connecting rod, the supporting frame and the side plate form a four-bar mechanism.
Optionally, the handle torsion member and the rotation member are connected by a protrusion and a slot, respectively.
Optionally, the first connecting rod is connected with the supporting frame through a second connecting rod.
Optionally, mould shell type four-bar linkage include with the pivot rotates the third connecting rod of being connected, the third connecting rod still connects gradually connecting axle, fourth connecting rod, carries and detains the frame, carry detain the frame with the curb plate rotates to be connected, the connecting axle with be connected with the elastic component between the support frame, the pivot carry detain the frame the third connecting rod with the fourth connecting rod forms four-bar linkage.
Optionally, the support frame is connected with the connecting shaft through an elastic piece.
The embodiment of the application also provides a rotary isolating switch, which comprises the operating mechanism and an on-off device connected with the rotating shaft of the operating mechanism.
The beneficial effects of the embodiment of the application include:
the operating mechanism and the rotation type isolator that this application embodiment provided are provided with in operating mechanism's the casing and put mechanism, mould shell type four-bar linkage, energy storage mechanism and long-range tripping device, put the mechanism and be used for being connected with the handle in, mould shell type four-bar linkage and pivot connection, the pivot is used for being connected with on-off device's contact, drives the contact action and accomplishes divide-shut brake. The operation handle makes the middle mechanism act to drive the plastic shell type four-bar mechanism and the rotating shaft to act in sequence, and then the opening and closing of the contact are completed. Through the linkage of the plastic shell type four-bar mechanism and the middle mechanism, the characteristics of the plastic shell type four-bar mechanism such as the stability in the aspects of breaking and tripping and the like are ensured, and the characteristic that the traditional disconnecting switch operation center is coincident with the contact rotation center is also retained. The plastic shell type four-bar mechanism and the energy storage mechanism are positioned on one side of the middle-placed mechanism, the remote tripping mechanism is positioned on one side of the plastic shell type four-bar mechanism, and the size of the switch is effectively reduced through the integral layout.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Specifically, referring to fig. 1, an operating mechanism 100 according to an embodiment of the present application includes a housing 101, a middle mechanism 11 and a plastic shell type four-bar linkage 12 are disposed in the housing 101, the plastic shell type four-bar linkage 12 is connected to a rotating shaft 16 for driving a contact of an on-off device 210, and the middle mechanism 11 is used for connecting a handle; the middle mechanism 11 drives the plastic shell type four-bar mechanism 12 to act through the operation handle, so that the contact is driven to be switched on and off through the rotating shaft 16.
The housing 101 is provided with a middle mechanism 11, a molded shell type four-bar mechanism 12, an energy storage mechanism 13 and a remote tripping mechanism 14, and the housing 101 is further provided with an upper cover (not shown) to enclose the mechanisms in the housing 101, so that only the position connected with the handle is exposed. Illustratively, as shown in fig. 2, in an embodiment of the present application, the middle-mounted mechanism 11 and the molded shell type four-bar linkage 12 are arranged along a first direction, the first direction is a width direction of the housing 101, an energy storage mechanism 13 is further connected to one side of the middle-mounted mechanism 11, a remote tripping mechanism 14 is further connected to one side of the molded shell type four-bar linkage 12 away from the energy storage mechanism 13, and both the energy storage mechanism 13 and the remote tripping mechanism 14 are located at one side of the middle-mounted mechanism 11 and one side of the molded shell type four-bar linkage 12, respectively, along a direction perpendicular to the first direction, so that the overall layout is compact, and the volume of the operating mechanism 100 can be effectively reduced.
It should be understood that the above layout is only one implementation manner of the embodiment of the present application, and is not the only limitation or the only supportable solution for the layout manner of the middle mechanism 11, the plastic shell type four-bar linkage 12, the energy storage mechanism 13, and the remote tripping mechanism 14 in the present application, and the specific layout may be set according to the actual requirement, for example, the layout may also adopt a surrounding arrangement, a horizontal arrangement, a vertical arrangement, or the like, as long as the transmission is realized.
The middle mechanism 11 is used for connecting a handle, the plastic shell type four-bar mechanism 12 is connected with the rotating shaft 16, the rotating shaft 16 is connected with the contact, and when the handle is operated, the plastic shell type four-bar mechanism 12 acts through the middle mechanism 11, so that the rotating shaft 16 rotates and drives the contact to be switched on and switched off. The operating mechanism 100 provided by the embodiment of the application, through the linkage of the plastic shell type four-bar mechanism 12 and the central mechanism 11, not only ensures the characteristics of the plastic shell type four-bar mechanism 12 in terms of breaking and tripping, such as stability, but also keeps the characteristic that the operating center of the traditional disconnecting switch coincides with the rotating center of the contact. When the handle is operated, the middle mechanism 11 only needs to rotate by a small angle, and the rotating shaft 16 can rotate by a large angle through the plastic shell type four-bar mechanism 12, so that the transmission structure is simplified, and the whole volume is reduced.
In addition, in an implementation manner of the present application, the center of the handle coincides with the center of the rotating shaft 16, so that the effective operating space can be fully utilized, and the compactness of the whole structure is improved. Of course, the center of the handle and the center of the rotating shaft 16 may be set according to specific requirements, as long as the required transmission is ensured, and the combination of the two is not limited.
And the remote tripping mechanism 14 is used for protecting the circuit to safely carry out remote tripping when the circuit fails, and the remote tripping mechanism 14 acts to enable the plastic shell type four-bar mechanism 12 to act and drive the contact to open and trip through the rotating shaft 16. The energy storage mechanism 13 is configured to store energy when the middle mechanism 11 operates, so as to supplement the excessive closing force to the opening force, and perform an energy recovery function, and the remote tripping mechanism 14 and the energy storage mechanism 13 are specifically described later.
In summary, in the operating mechanism 100 provided in the embodiment of the present application, a middle-set mechanism 11, a plastic shell type four-bar mechanism 12, an energy storage mechanism 13, and a remote tripping mechanism 14 are disposed in a housing 101 of the operating mechanism 100, the middle-set mechanism 11 is used for connecting with a handle, the plastic shell type four-bar mechanism 12 is connected with a rotating shaft 16, and the rotating shaft 16 is used for connecting with a contact of an on-off device to drive the contact to move to complete opening and closing. The operation handle makes the middle mechanism 11 act to drive the plastic shell type four-bar mechanism 12 and the rotating shaft 16 to act in sequence, and then the opening and closing of the contact are completed. Through the linkage of the plastic shell type four-bar mechanism 12 and the middle mechanism 11, the characteristics of the plastic shell type four-bar mechanism 12 such as breaking and tripping stability are ensured, and the characteristic that the traditional disconnecting switch operation center is coincident with the contact rotation center is also retained.
In addition, the energy storage mechanism 13 is driven to complete energy conversion through the action of the middle-arranged mechanism 11, redundant brake closing force of the system is supplemented to brake opening force, and energy recovery is completed; the plastic shell type four-bar mechanism 12 is driven to act through the remote tripping mechanism 14, the brake separating during circuit faults is completed, the safety of a circuit is guaranteed, the energy storage mechanism 13 is located on one side of the middle mechanism 11, the remote tripping mechanism 14 is located on one side of the plastic shell type four-bar mechanism, and the size of a switch is effectively reduced through the integral layout.
Specifically, as shown in fig. 3, there are two side plates 112 disposed in the housing 101, and the two side plates 112 are parallel and connected by a positioning shaft 117; for the middle mechanism 11, the middle mechanism 11 includes a torsion element 110 rotatably connected to a side plate 112, and a rotation element 115 coaxially arranged with the torsion element 110, the rotation element 115 is sequentially rotatably connected with a first link 111 and a support frame 114, the support frame 114 is connected with the plastic shell type four-bar mechanism 12, the first link 111 is connected with the support frame 114 through a second link 113, and the rotation element 115, the first link 111, the support frame 114 and the side plate 112 form a four-bar mechanism.
A rectangular groove is formed in the top surface of the torsion piece 110 and used for being matched with a handle, and the handle is inserted into the rectangular groove and then rotated to enable the torsion piece 110 to rotate; the rotating member 115 and the twisting member 110 are coaxially disposed, and the rotating member 115 is driven to rotate when the twisting member 110 rotates. Illustratively, the torsion member 110 and the rotation member 115 are connected by a protrusion and a notch, respectively, in other words, the bottom of the torsion member 110 may be provided with a protrusion, and the top of the rotation member 115 may be provided with a notch, which cooperate to connect the torsion member 110 and the rotation member 115; it is also possible that the bottom of the rotation member 110 may be provided with a slot, the top of the rotation member 115 may be provided with a protrusion, and the rotation member 110 and the rotation member 115 may be connected.
When the rotating member 115 rotates, the first connecting rod 111, the second connecting rod 113 and the supporting frame 114 may be sequentially driven to rotate, and the supporting frame 114 is connected to the rotating shaft 16 through the plastic shell type four-bar linkage 12. Wherein, the rotating member 115, the first link 111, the supporting bracket 114 and the side plate 112 form a four-bar linkage. Generally, in order to ensure that there is enough open distance during opening, the rotating shaft 16 needs to drive the contact to rotate 90 °, and since the rotating shaft 16 is connected to the supporting frame 114 through the plastic shell type four-bar mechanism 12, when the supporting frame 114 rotates relative to the side plate 112, the plastic shell type four-bar mechanism 12 can be driven to have a larger displacement, so as to realize the rotation angle required by the rotating shaft 16. And because the rotating part 115, the first connecting rod 111, the supporting frame 114 and the side plate 112 form a four-bar linkage mechanism, when the rotating part 115 is driven to rotate by the twisting part 110, the four-bar linkage mechanism can be driven to act, so that the supporting frame 114 only needs to rotate by a small angle, generally rotates by about 37 degrees, a large space does not need to be arranged for the supporting frame 114 to act, and the purpose of reducing the space and the volume occupied by the switch is achieved.
Fig. 7 shows a state diagram of a four-bar linkage formed by the rotating member 115, the first link 111, the support frame 114, and the side plate 112 in a closing state, and fig. 8 shows a state diagram of a four-bar linkage formed by the rotating member 115, the first link 111, the support frame 114, and the side plate 112 in an opening state, and it can be seen from the diagram that when the support frame 114 is driven by the rotating member 115 to rotate, the support frame 114 has a smaller deflection angle with respect to the side plate 112 to achieve the required transmission.
After the four-bar linkage formed by the rotor 115, the first link 111, the support bracket 114, and the side plate 112 is operated, the plastic shell four-bar linkage 12 can be operated. Specifically, referring to fig. 5, the plastic shell type four-bar mechanism 12 includes a third connecting bar 124 rotatably connected to the rotating shaft 16, the third connecting bar 124 further sequentially connects to a connecting shaft 123, a fourth connecting bar 121, and a buckle carrying frame 122, the buckle carrying frame 122 is rotatably connected to the side plate 112, an elastic member 17 is connected between the connecting shaft 123 and the supporting frame 114, and the rotating shaft 16, the buckle carrying frame 122, the third connecting bar 124, and the fourth connecting bar 121 form a four-bar mechanism.
As shown in fig. 4, the supporting frame 114 includes two parallel flat plates and a vertical plate connecting one side of the two flat plates so that the supporting frame 114 forms a "U" shape, and similarly, the number of the fourth links 121 is two, and the two parallel fourth links 121 are connected by the vertical plate so as to form a "U" shape with the supporting frame 114. The rotating shaft 16 is rotatably arranged on the side plate 112, the side plate 112 is also rotatably connected with the buckle carrying frame 122 through a shaft 1221, and the buckle carrying frame 122 also forms a U-shaped structure; the support frame 114, the U-shaped structure formed by the two fourth connecting rods 121, and the buckle carrying frame 122 are sequentially included, in other words, the buckle carrying frame 122 is disposed in the two fourth connecting rods 121, the two fourth connecting rods 121 are disposed in the support frame 114, the U-shaped openings of the support frame 114, the two fourth connecting rods 121, and the buckle carrying frame 122 face different directions, and the support frame 114 and the side plate 112 are located on the same plane.
The periphery of the rotating shaft 16 is provided with two connecting blocks 16a for connecting with the third connecting rods 124, the three connecting rods 124 are respectively connected to the connecting blocks 16a on the periphery of the rotating shaft 16 in parallel, the other ends of the two third connecting rods 124 are connected with the connecting shaft 123, the end part connected with the fourth connecting rod 121 is connected to the connecting shaft 123, and the end part of the other opening is connected to the buckle carrying frame 122, as shown in fig. 4, an elastic part 17 is connected between the connecting shaft 123 and the supporting frame 114, the elastic part 17 is a spring, the two ends of the spring are respectively connected to the supporting frame 114 and the connecting shaft 123, and in order to realize transmission, the number of the springs is two, so as to provide elastic force required by opening and closing operation for the plastic shell type four-link mechanism 12; the rotating shaft 16, the buckle carrying frame 122, the third connecting rod 124 and the fourth connecting rod 121 form another four-bar mechanism, when the supporting frame 114 rotates, the elastic member 17 drives the connecting shaft 123 to rotate, so that the four-bar mechanism formed by the rotating shaft 16, the buckle carrying frame 122, the third connecting rod 124 and the fourth connecting rod 121 acts, the rotating shaft 16 is driven to act, and the opening and closing are achieved.
Fig. 7 shows a state diagram of a four-bar linkage mechanism formed by the rotating shaft 16, the buckle carrying frame 122, the third link 124 and the fourth link 121 in a closing state, and fig. 8 shows a state diagram of a four-bar linkage mechanism formed by the rotating shaft 16, the buckle carrying frame 122, the third link 124 and the fourth link 121 in an opening state, as can be seen from the diagram, when the rotating member 115 drives the supporting frame 114 to rotate, the supporting frame 114 rotates relative to the side plate 112, and the position of the connecting shaft 123 is changed between the supporting frame 114 and the connecting shaft 123 due to the connection of the elastic member 17, so as to achieve the required opening operation.
Therefore, the plastic shell type four-bar mechanism 12 and the middle mechanism 11 form a four-bar mechanism respectively, and the opening and closing are realized through the linkage of the two four-bar mechanisms. Through the linkage of the plastic shell type four-bar mechanism 12 and the middle mechanism 11, the operation handle driving switching-on and switching-off is changed from the original pull rod outer circumference push-pull driving into the rotation driving of the rotating shaft 16, the middle mechanism 11 only needs to rotate by a small angle, the rotating shaft 16 can rotate by a large angle through the plastic shell type four-bar mechanism 12, the transmission structure is simplified, and the size of the operation mechanism 100 is reduced.
Referring to fig. 6, the operating mechanism 100 according to the embodiment of the present disclosure further includes an energy storage mechanism 13, the energy storage mechanism 13 includes a supporting plate 131 linked with the rotating shaft 16, one end of the supporting plate 131 is disposed on the housing 101 through a rotating shaft 133, a torsion spring 132 is sleeved on the rotating shaft 133, and two ends of the torsion spring 132 are respectively connected to the housing 101 and the supporting plate 131.
The abutting plate 131 abuts against the connecting block 16a of the rotating shaft 16, when the switch is closed, the rotating shaft 16 rotates to drive the connecting block 16a to push the abutting plate 131 to act, and the abutting plate 131 acts to enable the torsion spring 132 to twist and accumulate energy for energy storage; when the brake is opened, the torsion spring 132 releases energy to apply work outwards, and drives the holding plate 131 to rotate reversely. Therefore, the redundant switching-on force during switching-on is stored through the torsion spring 132, the energy stored by the torsion spring 132 is released during switching-off to compensate the switching-off force required by switching-off, the situations of excessive switching-on force and insufficient switching-off force are changed, and the stability of system switching-on and switching-off is kept.
In addition, energy can be stored by the compression spring 134 shown in fig. 9, one end of the compression spring 134 abuts against the casing 101, the other end abuts against the abutting plate 131, and energy is stored by the compression spring 134 to compensate for the opening force required for opening the brake, which has the same principle as the aforementioned torsion spring 132, and is not described herein again.
The remote tripping mechanism 14 is used for driving the contact opening protection circuit through the plastic shell type four-bar mechanism 12 when the circuit fails; the remote tripping mechanism 14 is connected with the buckle carrying frame 122 of the plastic shell type four-bar linkage 12 through the primary unlocking rod 15, the primary unlocking rod 15 is further connected and arranged on the buckle plate 152, a torsion spring 151 is sleeved on the buckle plate 152, two ends of the torsion spring 151 are connected to the shell 101 and the buckle carrying frame 122, and the buckle plate 152 is linked with the buckle carrying frame 122; the remote tripping mechanism 14 drives the primary unlocking rod 15 to act, and the primary unlocking rod 15 drives the plastic shell type four-bar mechanism 12 to act through the locking plate 152, so that brake separation is completed.
Specifically, referring to fig. 2, the remote tripping mechanism 14 may be a magnetic flux resetting structure, and after the magnetic flux resetting structure performs switching off, the magnetic flux resetting structure needs to be reset by an external force, so that the system is reset and switched on; after the magnetic flux is electrified, the magnetic flux is turned off to push the secondary unlocking rod 141 to act, and the secondary unlocking rod 141 drives the primary unlocking rod 15 to act so as to complete brake opening through the plastic shell type four-bar mechanism 12; when the reset is needed, the handle is rotated reversely, the flanging structure 116 linked with the handle strikes the secondary unlocking rod 141 to move reversely, the secondary unlocking rod 141 presses the magnetic flux, and the magnetic flux resets.
The remote trip mechanism 14 may also be a shunt reset structure as shown in fig. 9, which can be automatically reset without external force. When the shunt excitation reset structure is electrified, the magnetic flux is withdrawn, the primary unlocking rod 15 is pushed to act through the push rod 142, and the brake is switched off through the plastic shell type four-bar mechanism 12; because the remote tripping mechanism 14 is internally provided with the return spring, the return spring is deformed to accumulate energy when the magnetic flux is withdrawn, the magnetic flux is cut off when the return spring is reset, the magnetic flux is ejected when the return spring releases the energy, the push rod 142 is pushed to move reversely, and the automatic reset switch-on is completed.
On the other hand, referring to fig. 10, an embodiment of the present invention further provides a rotary isolating switch 200, which includes the operating mechanism 100 in the foregoing embodiment, and an on-off device 210 connected to the rotating shaft 16 of the operating mechanism 100. The rotary isolating switch 200 includes the same structure and advantages as the operating mechanism 100 in the previous embodiment. The structure and advantages of the operating mechanism 100 have been described in detail in the foregoing embodiments, and are not described in detail herein.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.