CN115719689A - Three-station mechanism - Google Patents

Abstract

The invention discloses a three-station mechanism, which comprises a rack, wherein a switching-on and switching-off device, a grounding device, a main shaft device, an indicating device and a micro-switch device are arranged on the rack, an energy storage device is arranged between the switching-on and switching-off device and the grounding device, the switching-on and switching-off device and the grounding device are linked with the energy storage device and control the energy storage device to store and release energy, the switching-on and switching-off device and the grounding device are linked with the main shaft device, and switching-on and switching-off torque and grounding torque are output to a load switch through the main shaft device, and the indicating device is connected with the main shaft device.

Description

Three-station mechanism

Technical Field

The invention belongs to the field of load switches, and relates to a three-station mechanism.

Background

At present, an operating mechanism of a load switch is manufactured by a traditional process, the manufacturing process level of the traditional mechanism is relatively low, most parts are manufactured by castings and the like, the problems that the structure is heavy, complicated transmission cannot accurately indicate the position of the load switch are caused, in addition, the parts of a steel structure must be subjected to rust prevention and other treatment, lubricating oil must be coated during installation, and the manufacturing cost is relatively high.

Disclosure of Invention

The invention provides a three-station mechanism for overcoming the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a three-station mechanism, includes the frame, installs divide-shut brake device, earthing device, energy memory, spindle unit and indicating device in the frame, divide-shut brake device and earthing device and energy memory linkage and control energy memory and release energy, divide-shut brake device, earthing device and indicating device and spindle unit linkage, divide-shut brake device includes drive arrangement, drive arrangement includes motor, electric drive mechanism and coupling mechanism, coupling mechanism control motor and electric drive mechanism's the connection of dismantling.

Furthermore, the frame includes back mechanism board and preceding mechanism board, and back mechanism board and preceding mechanism board set firmly through the pillar subassembly and are connected, and back mechanism board and preceding mechanism board form first installation cavity, divide closing device, earthing device and energy memory set up in first installation cavity, and back mechanism board and preceding mechanism board are provided with a plurality of pressure muscle, are set firmly divide closing arc groove and ground connection arc groove on the back mechanism board.

Furthermore, coupling mechanism connects motor and electric drive mechanism respectively, and coupling mechanism includes turning arm cover and connecting axle, and turning arm cover rotates with the frame to be connected, and the connecting axle sets firmly at the motor output shaft of motor, and the connecting axle sets up at least one flat position, turning arm cover and connecting axle adaptation.

Furthermore, the energy storage device comprises a switching-on/off energy storage connecting lever, a grounding energy storage connecting lever and an energy storage pressure spring, the switching-on/off energy storage connecting lever is rotatably connected with a switching-on/off operating shaft of the switching-on/off device, a switching-on/off transmission pin is arranged at the free end of the switching-on/off energy storage connecting lever, the grounding energy storage connecting lever is fixedly arranged on a grounding operating shaft of the grounding device, a grounding transmission pin is arranged at the free end of the grounding energy storage connecting lever, and an upper pressure spring head and a lower pressure spring head of the energy storage pressure spring are respectively matched with the switching-on/off transmission pin and the grounding transmission pin.

Furthermore, the opening and closing device comprises an opening and closing operating shaft and an opening and closing transmission mechanism, the opening and closing operating shaft is rotatably connected with the rack, the opening and closing transmission mechanism comprises an opening and closing crank arm, the opening and closing crank arm is rotatably connected with the opening and closing operating shaft, the opening and closing crank arm is provided with an opening and closing chute and an opening and closing transmission rod, the opening and closing transmission pin is positioned in the opening and closing chute and is in sliding connection with the opening and closing chute, the opening and closing transmission rod is arranged in the opening and closing arc groove and is in sliding connection with the opening and closing arc groove, and the opening and closing transmission rod is linked with the main shaft device.

Furthermore, the grounding device comprises a grounding operation shaft and a grounding transmission mechanism, the grounding operation shaft is rotatably connected with the rack, the grounding transmission mechanism comprises a grounding crank arm, the grounding crank arm is rotatably connected with the grounding operation shaft, the grounding crank arm is provided with a sub-grounding chute and a grounding transmission rod, a grounding transmission pin is positioned in the grounding chute and is slidably connected with the grounding chute, the grounding transmission rod is arranged in the grounding arc groove and is slidably connected with the grounding arc groove, and the grounding transmission rod is linked with the main shaft device.

Furthermore, the grounding device further comprises a grounding limiting mechanism, the grounding limiting mechanism comprises a third support and a fourth support, the third support and the fourth support are located on two sides of the grounding transmission mechanism of the grounding device, and when the load switch is in a grounding state, the grounding energy storage crank arm of the energy storage device is abutted against the fourth support.

Furthermore, the device also comprises an indicating device, wherein the indicating device comprises an indicating main shaft and a sign, the indicating main shaft is connected with the main shaft of the load switch, and the sign is connected with the indicating main shaft.

Furthermore, an opening and closing arc groove and a grounding arc groove are fixedly arranged on the rear mechanism plate, and opening and closing reinforcing ribs are arranged at the end parts of the arc grooves at the two ends of the opening and closing arc groove and the grounding arc groove.

Furthermore, the energy storage device further comprises a limiting transmission plate, the limiting transmission plate is fixedly connected with a switching-on and switching-off operation shaft of the switching-off and switching-on device, the limiting transmission plate is fixedly provided with a first limiting protrusion and a second limiting protrusion, the switching-on and switching-off transmission pin is abutted against the second limiting protrusion in the switching-off state, and the switching-on and switching-off transmission pin is abutted against the first limiting protrusion in the switching-on state.

In conclusion, the invention has the advantages that:

1) The invention redesigns and manufactures the parts of the mechanism, improves the related mechanism, improves the modularized design of the parts of the mechanism, improves the efficiency of rapid conversion among different configurations and improves the universality of the parts.

2) The invention is provided with the pressing ribs on the rear mechanism plate and the front mechanism plate, the pressing ribs are formed by pressing the ribs, the strength of the rear mechanism plate and the front mechanism plate can be improved, the material consumption is reduced, the strength is kept unchanged, meanwhile, the opening and closing reinforcing ribs are arranged at the ends of the arc grooves at the two ends of the closing arc groove and the grounding arc groove, so that the strength of the opening and closing arc grooves is enhanced, and the impact force on the opening and closing device and the ends of the opening and closing arc grooves is reduced.

3) The collision between the first limiting bulge and the second limiting bulge of the limiting transmission plate and the opening and closing transmission pin is stopped, and the impact force borne by the opening and closing crank arm is reduced, so that the requirement on the strength of the opening and closing crank arm is reduced, and the requirements on the machining requirement and the material of the opening and closing crank arm are further reduced.

4) The invention effectively reduces the impact force applied to the opening and closing of the opening and closing crank arm through the opening and closing buffer mechanism.

5) The invention realizes the linkage and the separation of the movement between the motor and the electric transmission mechanism through the connecting mechanism, realizes the quick assembly and disassembly of the motor under the condition of not influencing the electric transmission mechanism, effectively simplifies the three-station mechanism, promotes the integral level of the three-station mechanism and realizes the modular design of parts of the mechanism.

6) The grounding crank arm and the opening and closing crank arm are riveted, parts of the grounding crank arm and the opening and closing crank arm can be processed in advance and connected through riveting, the manufacturing is simple, the process requirement is relatively low, and therefore the production efficiency of the grounding crank arm and the opening and closing crank arm is effectively improved.

7) According to the invention, the grounding energy storage connecting lever collides with the third strut or the fourth strut for limiting, and does not depend on stopping through the collision of the grounding connecting lever, so that the requirement on the strength of the grounding connecting lever is reduced, and the requirements on the processing requirement and the material of the grounding connecting lever are further reduced.

8) The grounding crank arm and the opening and closing crank arm adopt injection molding parts, and the injection molding parts have the advantages of maintenance-free property, rust prevention and heat treatment.

Drawings

Fig. 1 is a schematic diagram of a three-station mechanism according to the present invention.

Fig. 2 is a schematic diagram of a three-station mechanism of the present invention.

FIG. 3 is a schematic view of the rear mechanism plate of the present invention.

Fig. 4 is a first schematic diagram of the switching-closing device, the grounding device, the main shaft device and the rear mechanism plate of the invention.

Fig. 5 is a second schematic diagram of the switching device, the grounding device, the spindle device and the rear mechanism plate of the invention.

Fig. 6 is a schematic view of the driving device of the present invention.

Fig. 7 is a schematic view of the electric transmission mechanism of the present invention.

FIG. 8 is a schematic view of the limiting drive plate of the present invention.

Fig. 9 is a schematic diagram of a ground energy storage crank arm according to an embodiment of the invention.

Fig. 10 is a first schematic diagram of a combining crank arm according to an embodiment of the present invention.

Fig. 11 is a second schematic diagram of a combining crank arm according to an embodiment of the invention.

Fig. 12 is a first schematic view of a ground crank arm according to an embodiment of the present invention.

Fig. 13 is a second schematic view of a ground crank arm according to an embodiment of the invention.

Fig. 14 is a schematic view of an indicating device, a microswitch device and a spindle device of the present invention.

Fig. 15 is a schematic diagram of a second grounding energy storage crank arm according to an embodiment of the invention.

Fig. 16 is a schematic view of a two-split crank arm according to an embodiment of the present invention.

Fig. 17 is a schematic view of a second ground engaging crank arm according to an embodiment of the present invention.

The labels in the figure are: the damping mechanism comprises a rack 1, a rear mechanism plate 11, a front mechanism plate 12, a middle plate 15, a rib 111, a switching arc groove 112, a first switching through hole 114, a grounding arc groove 116, a first grounding through hole 117, a second strut 132, a third strut 133, a fourth strut 134, a connecting mechanism 20, a switching operation shaft 21, a switching connecting lever 22, a first buffer member 23, a second buffer member 24, an electric transmission mechanism 25, a motor 27, a first switching connecting lever plate 221, a second switching connecting lever plate 222, a switching transmission rod 223, a switching sliding groove 2211, a first buffer groove 2212, a second buffer groove 2213, a third buffer groove 2221, a buffer shaft 231, a buffer shaft sleeve 232, a connecting rod 251, a motor connecting lever 252, an electric transmission pin 253, a protrusion 2511, a movable groove 2521, a middle plate strut 151, a first buffer groove 2212, a second buffer groove 2213, a third buffer groove 2221, a buffer shaft 231, a buffer shaft sleeve 232, a connecting rod 251, a motor connecting rod 252, an electric transmission pin 253, a protrusion 2511, a movable groove 2521, a middle plate strut 151 the energy-saving switch comprises a crank arm sleeve 201, a connecting hole 202, a connecting shaft 203, a motor output shaft 271, an electric fixing piece 272, a switching transmission pin 28, a switching energy-storing crank arm 29, a grounding operation shaft 31, a grounding crank arm 32, a limiting transmission plate 36, a first grounding crank arm plate 321, a second grounding crank arm plate 322, a grounding transmission rod 323, a grounding sliding groove 3211, a limiting transmission hole 361, a first limiting protrusion 362, a second limiting protrusion 363, an energy-storing pressure spring 37, a grounding transmission pin 38, a grounding energy-storing crank arm 39, a bottom plate 391, a side plate 392, a first mounting hole 394, a second mounting hole 393, a cam sheet 41, an indication main shaft 42, an indication board 43, a microswitch 44, a micro cam 45, a grounding track groove 410, a switching arc limiting groove 411 and a grounding arc limiting groove 412.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

All directional indicators (such as up, down, left, right, front, back, horizontal, vertical … …) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the movement, etc. in a specific attitude, and if the specific attitude changes, the directional indicator changes accordingly.

Due to installation errors and the like, the parallel relationship referred to in the embodiments of the present invention may actually be an approximately parallel relationship, and the perpendicular relationship may actually be an approximately perpendicular relationship.

The first embodiment is as follows:

as shown in fig. 1-14, a three-station mechanism comprises a frame 1, wherein a switching device, a grounding device, a main shaft device, an indicating device and a micro-switch device are mounted on the frame 1, an energy storage device is arranged between the switching device and the grounding device, the switching device and the grounding device are linked with the energy storage device and control the energy storage device to store and release energy, the switching device and the grounding device are linked with the main shaft device, switching torque and grounding torque are output to a load switch through the main shaft device, the indicating device is connected with the main shaft device, the indicating device comprises an indicating main shaft 42, the micro-switch device comprises a micro-switch 44 and a micro-cam 45, the micro-cam 45 is fixedly arranged on the indicating main shaft 42, the switching device comprises a driving device, the driving device is arranged in a modular structure, and the driving device can be alternatively mounted on the frame 1.

Frame 1 includes rear mechanism board 11 and preceding mechanism board 12, rear mechanism board 11 and preceding mechanism board 12 set firmly the connection through the strut subassembly, the strut subassembly is located between rear mechanism board 11 and preceding mechanism board 12, and both ends set firmly the connection with rear mechanism board 11 and preceding mechanism board 12 respectively, rear mechanism board 11 forms first installation cavity (not sign in the figure) with preceding mechanism board 12, divide-shut brake device, earthing device and energy memory set up in first installation cavity, in this embodiment, rear mechanism board 11 and preceding mechanism board 12 parallel arrangement.

The rear mechanism plate 11 and the front mechanism plate 12 are of thin plate structures, the rear mechanism plate 11 and the front mechanism plate 12 are provided with a plurality of press ribs 111, and the press ribs of the rear mechanism plate 11 and the front mechanism plate 12 are formed by press rib forming to improve the strength of the thin plate, reduce the used materials and keep the strength unchanged.

The rear mechanism plate 11 is fixedly provided with a switching arc groove 112, a first switching through hole 114, a grounding arc groove 116 and a first grounding through hole 117, the front mechanism plate 12 is fixedly provided with a second switching through hole (not marked in the figure) and a second grounding through hole (not marked in the figure), the central axis of the first switching through hole 114 is collinear with the central axis of the second switching through hole, the central axis of the first grounding through hole 117 is collinear with the central axis of the second grounding through hole, the arc groove end parts at the two ends of the switching arc groove 112 and the grounding arc groove 116 are provided with a switching reinforcing rib 113, so as to strengthen the strength of the switching arc groove 112, and reduce the impact force applied to the switching device and the end part of the switching arc groove 112.

The first switching through hole 114 and the first grounding through hole 117 are provided with flanges 115, so that the contact area between the corresponding shaft and the first switching through hole 114 and the contact area between the corresponding shaft and the first grounding through hole 117 are increased, and the strength is enhanced, so that the functional use requirement is met.

The strut assembly comprises a second strut 132, a third strut 133 and a fourth strut 134, according to the visual angle of fig. 1-2, the second strut 132 is located at the upper ends of the rear mechanism plate 11 and the front mechanism plate 12, the two ends of the second strut 132 are fixedly connected with the rear mechanism plate 11 and the front mechanism plate 12 respectively, the third strut 133 and the fourth strut 134 are located at the lower ends of the rear mechanism plate 11 and the front mechanism plate 12, the two ends of the third strut 133 and the fourth strut 134 are fixedly connected with the rear mechanism plate 11 and the front mechanism plate 12 respectively, and the second strut 132, the third strut 133 and the fourth strut 134 are distributed between the rear mechanism plate 11 and the front mechanism plate 12 in a triangular manner, so that the stability of the rack 1 is ensured.

The energy storage device comprises a switching-on/off energy storage crank arm 29, a grounding energy storage crank arm 39 and an energy storage pressure spring 37, the switching-on/off energy storage crank arm 29 is rotatably connected with a switching-on/off operation shaft 21, a switching-on/off transmission pin 28 is arranged at the free end of the switching-on/off energy storage crank arm 29, the grounding energy storage crank arm 39 is fixedly arranged on the grounding operation shaft 31 and can rotate along with the grounding operation shaft 31, a grounding transmission pin 38 is arranged at the free end of the grounding energy storage crank arm 39, the energy storage pressure spring 37 adopts the existing structure, and an upper pressure spring head and a lower pressure spring head of the energy storage pressure spring 37 are respectively matched with the switching-on/off transmission pin 28 and the grounding transmission pin 38, so that the switching-on/off energy storage crank arm 29 or the grounding energy storage crank arm 39 can store energy and release energy in the rotating process of the energy storage pressure spring 37.

In this embodiment, the grounding energy-storage connecting lever 39 is an integrally formed structure, and includes a bottom plate 391 and two side plates 392, the two side plates 392 are symmetrically fixed on two sides of the bottom plate 391 to form a U-shaped structure, the side plates 392 are fixedly provided with a first mounting hole 394 and a second mounting hole 393, the first mounting hole 394 is used for mounting the grounding operation shaft 31 of the grounding device, and the second mounting hole 393 is used for mounting the grounding transmission pin 38.

The energy storage device further comprises a limiting transmission plate 36, the limiting transmission plate 36 is fixedly connected with the opening and closing operation shaft 21 and rotates along with the opening and closing operation shaft 21, a limiting transmission hole 361 is formed in the limiting transmission plate 36, the opening and closing operation shaft 21 of the opening and closing device penetrates through the limiting transmission hole 361, and the limiting transmission plate 36 rotates along with the opening and closing operation shaft 21.

The limiting transmission plate 36 is fixedly provided with a first limiting protrusion 362 and a second limiting protrusion 363, the first limiting protrusion 362 and the second limiting protrusion 363 form a limiting interval, the switching transmission pin 28 is located in the limiting interval, when the load switch is switched off, the switching energy storage connecting lever 29 drives the switching transmission pin 28 to rotate in the energy release process of the energy storage device, the switching transmission pin 28 drives the switching connecting lever 22 to rotate, the switching torque is output to the load switch through the spindle device, the switching transmission pin 28 stops colliding with the second limiting protrusion 363 after the switching transmission pin is in place, the switching connecting lever 22 buffers the collision of the switching connecting lever 22 and the switching buffering mechanism, when the load switch is switched on, the switching energy storage connecting lever 29 drives the switching transmission pin 28 to rotate in the energy release process of the energy storage device, the switching connecting lever 28 stops colliding with the first limiting protrusion 362, the switching connecting lever 22 buffers the collision of the switching connecting lever 22 and the switching buffering mechanism, the first limiting protrusion 362 and the second limiting protrusion 363 collide with the transmission pin 28 to stop the collision of the switching transmission pin, and the switching connecting lever 22 reduces the impact force required for processing the switching arm, and the switching arm.

The switching device comprises a switching operation shaft 21 and a switching transmission mechanism, wherein the switching operation shaft 21 penetrates through a first switching through hole 114 of the rear mechanism plate 11 and a second switching through hole of the front mechanism plate 12 and is rotatably connected with the first switching through hole 114 and the second switching through hole.

The opening and closing transmission mechanism comprises an opening and closing crank arm 22, the opening and closing crank arm 22 is rotatably connected with the opening and closing operation shaft 21, the opening and closing crank arm 22 comprises a first opening and closing crank arm plate 221 and a second opening and closing crank arm plate 222, the first opening and closing crank arm plate 221 and the second opening and closing crank arm plate 222 are fixedly connected and preferably riveted, the first opening and closing crank arm plate 221 is fixedly provided with an opening and closing chute 2211, an opening and closing transmission pin 28 is located in the opening and closing chute 2211 and is in sliding connection with the opening and closing chute 2211, two side edges of the first opening and closing crank arm plate 221 are fixedly provided with a first buffer groove 2212 and a second buffer groove 2213 respectively, the second opening and closing crank arm plate 222 is fixedly provided with an opening and closing transmission rod 223, the opening and closing transmission rod 223 is arranged in the opening and closing arc groove 112 and is in sliding connection with the opening and closing arc groove 112, the opening and closing transmission rod 223 is linked with the main shaft device, a third buffer groove 2221 is arranged on the side edge of the second opening and closing crank arm plate 222 and is matched with the second buffer groove 2213.

The opening and closing device further comprises an opening and closing buffer mechanism, the opening and closing buffer mechanism comprises a first buffer member 23 and a second buffer member 24, the first buffer member 23 and the second buffer member 24 are fixedly arranged on the rear mechanism plate 11 respectively, the first buffer member 23 and the second buffer member 24 are identical in structure, the first buffer member 23 is taken as an example for explanation, the first buffer member 23 comprises a buffer shaft 231, a buffer pad and a buffer shaft sleeve 232, the buffer pad is sleeved on the outer surface of the buffer shaft 231, the buffer pad and the buffer shaft 231 are fixedly arranged on the rear mechanism plate 11 by the buffer shaft sleeve 232, when the opening operation is carried out, the energy storage device releases energy to drive the opening and closing crank arm 22 to rotate, and the first buffer groove 2212 abuts against the first buffer member 23, so that the limiting buffer during the opening and closing of the opening and closing crank arm 22 is realized, and the impact force borne by the opening and closing device is reduced; when the switching-on operation is performed, the energy storage device releases energy to drive the switching-off and switching-on connecting lever 22 to rotate, and the third buffer groove 2221 and the second buffer groove 2213 are abutted against the second buffer piece 24, so that the limiting buffer during the switching-on of the switching-off and switching-on connecting lever 22 is realized, and the impact force borne by the switching-on and switching-off device during the switching-on is reduced; in the embodiment, the opening and closing buffering mechanism effectively reduces the impact force on the opening and closing of the opening and closing crank arm 22.

The three station mechanisms of this embodiment collect manual and electronic in an organic whole, and the divide-shut brake device of three station mechanisms includes electronic drive arrangement and manual divide-shut brake mechanism, and manual divide-shut brake mechanism adopts current structure, does not describe here any longer, and drive arrangement includes motor 27, electric drive mechanism 25 and coupling mechanism 20, and coupling mechanism 20 connects motor 27 and electric drive mechanism 25 respectively, and coupling mechanism 20 controls dismantling of motor 27 and electric drive mechanism 25 and is connected.

In this embodiment, the driving device is fixedly connected to the frame 1 through the middle plate 15, and the middle plate 15 is located between the front mechanism plate 12 and the rear mechanism plate 11 and is fixedly connected to the front mechanism plate 12 and the rear mechanism plate 11 through the middle plate support 151.

The motor 27 is disposed on the frame 1, in this embodiment, the motor 27 is mounted on the front surface of the front mechanism plate 12 through the electric fixing member 272, and the front surface is set as the end surface of the front mechanism plate 12 deviating from the rear mechanism plate 11, compared with the existing mode of mounting the motor 27 between the front mechanism plate 12 and the rear mechanism plate 11, the application sets the motor 27 on the front surface of the front mechanism plate 12, which is convenient for dismounting the motor 27, the motor output shaft 271 of the motor 27 faces the rear mechanism plate 11, the motor output shaft 271 of the motor 27 is rotatably connected with the front mechanism plate 12 and extends between the front mechanism plate 12 and the rear mechanism plate 11, the motor 27 can adopt the existing structure, and no further description is made here.

The connecting mechanism 20 comprises a crank arm sleeve 201 and a connecting shaft 203, the crank arm sleeve 201 is fixedly provided with a connecting hole 202, the connecting shaft 203 is inserted into the connecting hole 202, the crank arm sleeve 201 and the connecting shaft 203 are connected in an inserting mode, the connecting shaft 203 is fixedly arranged on a motor output shaft 271, the crank arm sleeve 201 is rotatably connected with the middle plate 15 of the rack 1, the connecting shaft 203 is provided with at least one flat position, the connecting hole 202 is matched with the connecting shaft 203, the number of the flat positions of the connecting shaft 203 is the same as that of the flat positions of the connecting hole 202, the connecting shaft 203 can drive the crank arm sleeve 201 to rotate, and the connecting shaft 203 and the crank arm sleeve 201 are prevented from rotating.

In this embodiment, when the motor 27 needs to be replaced, the electric fixing member 272 is loosened, and then the connecting shaft 203 is pulled out to separate from the crank sleeve 201, so as to separate the whole motor 27 from the frame 1, thereby realizing the function of quick assembly and disassembly of the motor 27,

in the present embodiment, the motor 27 is attached and detached in a horizontal direction, so that interference with other components can be avoided.

The electric transmission mechanism 25 is linked with the energy storage device, and further controls the opening and closing device to perform opening and closing operations.

The electric transmission mechanism 25 comprises a connecting rod 251, a motor crank arm 252 and an electric transmission pin 253, the motor crank arm 252 is fixedly connected with the output end of the crank arm sleeve 201, the motor crank arm 252 rotates along with the crank arm sleeve 201, and the free end of the motor crank arm 252 is fixedly provided with a movable groove 2521.

The connecting rod 251 is rotatably connected with the limiting transmission plate 36 through a pin, the connecting rod 251 forms a lever-like structure according to the position of the pin, two ends of the connecting rod 251 are free ends, one end of the connecting rod 251 is fixedly provided with an electric transmission pin 253, the electric transmission pin 253 is arranged in a movable groove 2521, the other end of the connecting rod 251 is fixedly provided with a protrusion 2511, and the protrusion 2511 is positioned above the opening and closing energy storage connecting lever 29 and is abutted against the opening and closing energy storage connecting lever 29 in an opening and closing state.

When the driving device performs a closing operation, the motor 272 is started to enable the motor output shaft 271 and the connecting shaft 203 to rotate, the connecting shaft 203 rotates to drive the crank arm sleeve 201 to rotate along the arrow direction of fig. 6, the crank arm sleeve 201 rotates to drive the motor crank arm 252 to rotate along the arrow direction of fig. 6, the motor crank arm 252 drives the connecting rod 251 to rotate, the free end of the connecting rod 251 with the electric transmission pin 253 moves upwards, the free end of the connecting rod 251 with the protrusion 2511 moves downwards, the protrusion 2511 abuts against the opening and closing energy storage crank arm 29 and controls the opening and closing energy storage crank arm 29 to move downwards under the rotation action of the connecting rod 251 to store energy until the maximum energy storage position is reached, at the moment, the motor 272 stops operating, the opening and closing energy storage crank arm 29 continues to rotate under the inertia action, the energy storage pressure spring 37 rotates through the maximum energy storage position, releases the stored energy and drives the opening and closing crank arm 22 to rotate through the spindle device, and further outputs a closing torque to the load switch.

In the embodiment, the connection mechanism 20 is used for realizing the linkage and the separation of the movement between the motor 27 and the electric transmission mechanism 25, and the motor 27 can be quickly assembled and disassembled under the condition of not influencing the electric transmission mechanism 25.

The grounding device comprises a grounding operation shaft 31 and a grounding transmission mechanism, wherein the grounding operation shaft 31 penetrates through the first grounding through hole 117 of the rear mechanism plate 11 and the second grounding through hole of the front mechanism plate 12 and is rotatably connected with the first grounding through hole 117 and the second grounding through hole.

Ground connection drive mechanism includes ground connection turning arm 32, ground connection turning arm 32 rotates with ground connection operation axle 31 to be connected, ground connection turning arm 32 includes first ground connection turning arm board 321 and second ground connection turning arm board 322, first ground connection turning arm board 321 and second ground connection turning arm board 322 set firmly to be connected, preferred riveting, therefore first ground connection turning arm board 321 and second ground connection turning arm board 322 can be processed in advance and rivet again, connect through the riveting, the preparation is simple, relatively lower to the technological requirement, thereby effectively improved ground connection turning arm 32's production efficiency.

The first grounding turning arm plate 321 is fixedly provided with a grounding chute 3211, the grounding transmission pin 38 is located in the grounding chute 3211 and is slidably connected with the grounding chute 3211, the second grounding turning arm plate 322 is fixedly provided with a grounding transmission rod 323, the grounding transmission rod 323 is arranged in the grounding arc groove 116 and is slidably connected with the grounding arc groove 116, and the grounding transmission rod 323 is linked with the main shaft device.

The grounding device further comprises a grounding limiting mechanism, the grounding limiting mechanism comprises a third strut 133 and a fourth strut 134, the third strut 133 and the fourth strut 134 are located on two sides of the grounding transmission mechanism, when the load switch is in a brake-off state for grounding operation, external force drives the grounding operation shaft 31 to rotate, the grounding operation shaft 31 drives the grounding energy storage connecting lever 39 to rotate, the grounding energy storage connecting lever 39 drives the grounding transmission pin 38 to slide along the grounding chute 321 and further drives the energy storage pressure spring 37 to store energy, when the energy storage pressure spring 37 reaches the maximum energy storage position by rotation, the external force is removed, the grounding device can continue to rotate under the action of inertia and enables the energy storage pressure spring 37 to rotate to the maximum energy storage position, stored energy is released and the grounding connecting lever 32 is driven to rotate by the grounding transmission pin 38 until the grounding energy storage connecting lever 39 collides with the fourth strut 134 and stops, in the resetting process, the external force drives the grounding operation shaft 31 to reversely rotate until the grounding energy storage connecting lever 39 collides with the third strut and stops, the grounding energy storage connecting lever 39 collides with the third strut and stops after the grounding energy storage connecting lever 39 is in place, the grounding limiting mechanism is independent of the grounding energy storage lever 133, and the grounding lever is stopped, thereby reducing the requirement for grounding material for grounding processing.

The spindle device comprises a cam plate 41, the cam plate 41 is located between the rear mechanism plate 11 of the rack 1 and the load switch, the cam plate 41 is connected with a spindle of the load switch, the cam plate 41 is provided with a grounding track groove 410, an opening and closing limiting arc groove 411 and a grounding limiting arc groove 412, the grounding track groove 410 is communicated with the opening and closing limiting arc groove 411, an opening and closing transmission rod 223 is inserted into the opening and closing limiting arc groove 411 and slides along the opening and closing limiting arc groove 411 to realize linkage of the opening and closing device and the spindle device, a grounding transmission rod 323 is inserted into the grounding limiting arc groove 412 and slides along the grounding limiting arc groove 412, linkage of the grounding device and the spindle device is realized, when the three-station mechanism carries out grounding operation, the opening and closing transmission rod 223 is located in the grounding track groove 410, the track of the grounding track groove 410 is the same as the moving track of the grounding transmission rod 323, interference of the opening and closing operation and the grounding operation is avoided, and the existing linkage relationship between the spindle device, and the opening and closing device and the grounding device is not described herein.

The indicating device is used for displaying the state of the load switch and comprises an indicating main shaft 42 and a sign 43, wherein the indicating main shaft 42 is connected with the main shaft of the load switch, and the sign 43 is connected with the indicating main shaft 42 and used for displaying the state of the load switch, so that the indicating accuracy is improved.

The three-station mechanism further comprises a micro-switch device, the micro-switch device comprises a micro-switch 44 and a micro-cam 45, the micro-switch 44 is fixedly arranged on the rack 1, the micro-cam 45 is fixedly arranged on a main shaft of the indication main shaft 42 or the load switch, the state of the load switch is directly transmitted through the indication main shaft 42, in the process, the protruding end of the micro-cam 45 abuts against the micro-switch 44, the micro-switch 44 is further driven, micro-switch signals are switched, compared with the existing method that the micro-switch 44 is indirectly driven through a connecting rod mechanism, the three-station mechanism is simpler in structure, more direct and efficient in motion transmission, the accuracy and stability of micro-switch signal switching are effectively improved, the number of the micro-switch 44 and the micro-cam 45 can be set according to actual needs, and limitation is not performed.

The switching device, the grounding device and the spindle device in this embodiment adopt a transmission mechanism with an existing structure, and the transmission mechanism is not an innovative point of this application and is not described herein again.

The three-station mechanism further comprises an interlocking device and an interlocking device, the interlocking device ensures that the switching-on/off operation shaft 21 and the grounding operation shaft 31 cannot be operated simultaneously, and the interlocking device can carry out grounding or switching-on operation only when the switching-on/off device and the grounding device are in a switching-off state.

Other structures, which are not described, of the three-station mechanism in this embodiment adopt existing equipment, and the other structures, which are not described, are not innovative points of the present application and are not described herein.

Example two:

as shown in fig. 15, the present embodiment is different from the first embodiment in that: in the first embodiment, the ground-connected energy-storing crank arm 39 comprises a bottom plate 391 and two side plates 392, the ground-connected energy-storing crank arm 39 is an integrated structure, and in the first embodiment, the ground-connected energy-storing crank arm 39 comprises two side plates 392 and a connecting rod 395, the connecting rod 395 is located between the two side plates 392, and the connecting rod 395 is riveted with the side plates 392.

Example three:

as shown in fig. 16, the present embodiment is different from the first embodiment in that: in the first embodiment, the dividing and combining crank arm 22 includes the first dividing and combining crank arm plate 221 and the second dividing and combining crank arm plate 222, and the first dividing and combining crank arm plate 221 and the second dividing and combining crank arm plate 222 are riveted, in this embodiment, the dividing and combining crank arm 22 is an integrated structure, the dividing and combining crank arm 22 includes the first end surface and the second end surface which are opposite in position, the dividing and combining sliding groove 2211 is fixedly arranged on the first end surface, the dividing and combining transmission rod 223 is fixedly arranged on the second end surface, and the first buffer groove 2212 and the second buffer groove 2213 are fixedly arranged on two side edges of the dividing and combining crank arm 22 respectively.

In this embodiment, the opening and closing crank arms 22 are injection-molded parts, which are maintenance-free and do not need rust prevention and heat treatment.

Example four:

as shown in fig. 17, the present embodiment is different from the first embodiment in that: in the first embodiment, the ground-engaging crank arm 32 includes a first ground-engaging crank arm plate 321 and a second ground-engaging crank arm plate 322, the first ground-engaging crank arm plate 321 is riveted with the second ground-engaging crank arm plate 322, the first ground-engaging crank arm plate 321 is fixedly provided with a ground-engaging chute 3211, the second ground-engaging crank arm plate 322 is fixedly provided with a ground-engaging transmission rod 323, in this embodiment, the ground-engaging crank arm 32 is of an integrated structure, the ground-engaging crank arm 32 includes a third end surface and a fourth end surface which are opposite to each other in position, the third end surface is fixedly provided with a tapping ground-engaging chute 3211, and the fourth end surface is fixedly provided with a ground-engaging transmission rod 323.

In the embodiment, the grounding crank arm 32 is made of an injection molding piece, and the injection molding piece is maintenance-free and does not need rust prevention and heat treatment.

In the above embodiments, the injection molded part is made by using the existing injection molding process, which is not described herein.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a three station mechanisms which characterized in that: the energy storage and release device comprises a rack, wherein a switching-off and switching-on device, a grounding device, an energy storage device, a main shaft device and an indicating device are installed on the rack, the switching-off and switching-on and grounding device and the energy storage device are linked and control the energy storage device to store energy and release energy, the switching-off and switching-on and switching-off device, the grounding device and the indicating device are linked with the main shaft device, the switching-off and switching-on and switching-off device comprises a driving device, the driving device comprises a motor, an electric transmission mechanism and a connecting mechanism, and the connecting mechanism controls the detachable connection of the motor and the electric transmission mechanism.

2. A three-position mechanism according to claim 1, wherein: the frame includes back mechanism board and preceding mechanism board, and back mechanism board and preceding mechanism board set firmly through the pillar subassembly and are connected, and back mechanism board and preceding mechanism board form first installation cavity, divide closing device, earthing device and energy memory set up in first installation cavity, and back mechanism board and preceding mechanism board are provided with a plurality of pressure muscle, have set firmly divide closing arc groove and ground connection arc groove on the back mechanism board.

3. A three-position mechanism according to claim 1, wherein: the connecting mechanism is respectively connected with the motor and the electric transmission mechanism, the connecting mechanism comprises a crank arm sleeve and a connecting shaft, the crank arm sleeve is rotatably connected with the rack, the connecting shaft is fixedly arranged on a motor output shaft of the motor, the connecting shaft is provided with at least one flat position, and the crank arm sleeve is matched with the connecting shaft.

4. A three-position mechanism according to claim 1, wherein: the energy storage device comprises a switching-on/off energy storage crank arm, a grounding energy storage crank arm and an energy storage pressure spring, the switching-on/off energy storage crank arm is rotationally connected with a switching-on/off operating shaft of the switching-on/off device, a switching-on/off driving pin is arranged at the free end of the switching-on/off energy storage crank arm, the grounding energy storage crank arm is fixedly arranged on a grounding operating shaft of the grounding device, a grounding driving pin is arranged at the free end of the grounding energy storage crank arm, and an upper pressure spring head and a lower pressure spring head of the energy storage pressure spring are respectively matched with the switching-on/off driving pin and the grounding driving pin.

5. A three-position mechanism according to claim 1, wherein: the opening and closing device comprises an opening and closing operating shaft and an opening and closing transmission mechanism, the opening and closing operating shaft is rotatably connected with the rack, the opening and closing transmission mechanism comprises an opening and closing crank arm, the opening and closing crank arm is rotatably connected with the opening and closing operating shaft, the opening and closing crank arm is provided with an opening and closing chute and an opening and closing transmission rod, an opening and closing transmission pin is positioned in the opening and closing chute and is in sliding connection with the opening and closing chute, the opening and closing transmission rod is arranged in the opening and closing arc groove and is in sliding connection with the opening and closing arc groove, and the opening and closing transmission rod is linked with the main shaft device.

6. A three-position mechanism as claimed in claim 1, wherein: the grounding device comprises a grounding operation shaft and a grounding transmission mechanism, the grounding operation shaft is rotatably connected with the rack, the grounding transmission mechanism comprises a grounding crank arm, the grounding crank arm is rotatably connected with the grounding operation shaft, the grounding crank arm is provided with a sub-grounding chute and a grounding transmission rod, a grounding transmission pin is positioned in the grounding chute and is slidably connected with the grounding chute, the grounding transmission rod is arranged in the grounding arc groove and is slidably connected with the grounding arc groove, and the grounding transmission rod is linked with the main shaft device.

7. A three-position mechanism according to claim 1, wherein: the grounding device further comprises a grounding limiting mechanism, the grounding limiting mechanism comprises a third support and a fourth support, the third support and the fourth support are located on two sides of the grounding transmission mechanism of the grounding device, and when the load switch is in a grounding state, the grounding energy storage crank arm of the energy storage device is abutted to the fourth support.

8. A three-position mechanism according to claim 1, wherein: the indicating device comprises an indicating main shaft and an indicating plate, the indicating main shaft is connected with the main shaft of the load switch, and the indicating plate is connected with the indicating main shaft.

9. A three-position mechanism according to claim 2, wherein: and the rear mechanism plate is fixedly provided with a switching-on and switching-off arc groove and a grounding arc groove, and the end parts of the arc grooves at the two ends of the switching-on and switching-off arc groove and the grounding arc groove are provided with switching-on and switching-off reinforcing ribs.

10. A three-station mechanism according to claim 4, wherein: the energy storing device further comprises a limiting transmission plate, the limiting transmission plate is fixedly connected with a switching-on and switching-off operation shaft of the switching-on and switching-off device, a first limiting protrusion and a second limiting protrusion are fixedly arranged on the limiting transmission plate, the switching-on and switching-off transmission pin is abutted to the second limiting protrusion in the switching-off state, and the switching-on and switching-off transmission pin is abutted to the first limiting protrusion in the switching-on state.

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