CN117790231B - Three-station spring operating mechanism with locking structure and control method - Google Patents
Three-station spring operating mechanism with locking structure and control method Download PDFInfo
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- CN117790231B CN117790231B CN202410121645.4A CN202410121645A CN117790231B CN 117790231 B CN117790231 B CN 117790231B CN 202410121645 A CN202410121645 A CN 202410121645A CN 117790231 B CN117790231 B CN 117790231B
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Abstract
The invention belongs to the technical field of switch structures, and discloses a three-station spring operating mechanism with a locking structure and a control method. The method comprises the following steps: the switch is isolated and closed, the switch is isolated and opened, the switch is grounded and closed, and the switch is grounded and opened. The locking structure is simple in design, low in cost and reliable in performance. According to the design requirement of the switch and the actual requirement of a customer, the isolation mechanism designed by the invention is a product which is designed completely by applying related theoretical knowledge, and the product has the advantages of simple structural design, complete functions, simple transmission, high efficiency and good economic benefit. The isolating switch-on position, the isolating switch-off position and the grounding switch-on position meet the switch-on and switch-off speed requirement during switching-on.
Description
Technical Field
The invention belongs to the technical field of switch structures, and particularly relates to a three-station spring operating mechanism with a locking structure and a control method.
Background
In the field of 12kV distribution products in China, the inflatable ring main unit has the advantages of small occupied area, maintenance-free performance, long service life and the like, the usage ratio of the inflatable ring main unit is larger and larger, the cabinet-type matched switch mainly comprises a breaker switch, a load switch and an isolating switch, wherein the breaker switch uses vacuum arc extinction to switch on and off load current, and the load switch is used for switching on and off small load current. The load switch has three working positions, namely a load switch closing position, a load switch opening position and a ground switch closing position, namely three-station switches for short.
The switching power of the switch comes from a spring operating mechanism, the switching speed requirement of the switch is met through a three-station spring operating mechanism, and the accurate switching-on position and switching-off position of the switch can be realized. The different structures of the switches of all factories in the current market lead to different opening and closing angles of the switches, the different opening and closing angles are realized by a mechanism, meanwhile, when the switch is subjected to an opening and closing test, 50kA high current is required to pass through a circuit, the opening and closing capability of the switch is verified, and due to the design reason of the switch structure, when the high current passes through the circuit, huge repulsive force (force for opening and closing the switch) is generated by the current, namely electric force, so that the mechanism is required to balance the resistance to prevent the switch from opening and closing. General spring mechanism designers design more complex structures inside the mechanism to lock the switch to prevent opening. The complex structure can lead to the problem that mass production quality is difficult to control when the quantity of the mechanism materials is increased and the cost is increased, and in order to avoid the problem, some mechanism manufacturers omit the structure in the structural design (the large current rarely appears in the normal use of the product), so that the development of customers is limited, and the design level of the mechanism manufacturers is reduced.
Disclosure of Invention
In order to overcome the problems in the related art, the embodiment of the invention discloses a three-station spring operating mechanism with a locking structure and a control method.
The technical scheme is as follows: three-station spring operating mechanism with locking structure, which comprises: the first fan-shaped disc and the second fan-shaped disc are respectively connected with a first operation shaft and a second operation shaft in a locking way; the first operation shaft is connected with a first operation shaft crank arm positioned at the inner side of the first fan-shaped disc in a locking manner, and the second operation shaft is connected with a second operation shaft crank arm positioned at the inner side of the second fan-shaped disc in a locking manner;
the other end of the first operation shaft crank arm is locked and connected with the left end of the spring; the other end of the second operation shaft crank arm is locked and connected with the right end of the spring;
A first main crank arm positioned at the outer side of the first fan-shaped disc is welded on the first operation shaft, and a second main crank arm positioned at the outer side of the second fan-shaped disc is welded on the second operation shaft;
The first main crank arm is connected with a first sealing driving plate driving shaft in a locking mode, the second main crank arm is connected with a second sealing driving plate driving shaft in a locking mode, the first sealing driving plate driving shaft is contained in a curve slideway formed by the dynamic sealing driving plate and freely slides, the second sealing driving plate driving shaft is in hard contact with a groove formed by the dynamic sealing driving plate, and under the action of external force, the second sealing driving plate driving shaft slides in the groove to realize the implementation processes of switch isolation closing, switch isolation opening, switch grounding closing and switch grounding opening.
Further, the number of the first fan-shaped disc, the second fan-shaped disc, the first operation shaft crank arm and the second operation shaft crank arm is 2, and the first operation shaft crank arm, the second operation shaft crank arm and the second operation shaft crank arm are symmetrically arranged;
The movable sealing driving plate is arranged on the front baffle, the switch-on and switch-off combined structure is arranged on the rear baffle, and the front baffle and the rear baffle are connected and fixed through a first limiting pin and a second limiting pin respectively.
Further, a first chute for containing the first sealing driving plate driving shaft to freely slide and a second chute for containing the second sealing driving plate driving shaft to freely slide are respectively formed on the front baffle plate;
The first sliding groove is matched with the curve sliding way, and the track of the second sliding groove for accommodating the free sliding of the driving shaft of the second sealing driving plate is consistent with the track of the groove for accommodating the free sliding of the driving shaft of the second sealing driving plate.
Further, the rear baffle is provided with an isolation operation hole for accommodating the first operation shaft to rotate freely;
The rear baffle is also provided with a grounding operation hole for accommodating the second operation shaft to rotate freely;
the first limiting pin is in hard contact with an arc-shaped groove formed in the first fan-shaped disc and is used for limiting the first fan-shaped disc;
the second limiting pin is in hard contact with an arc-shaped groove formed in the second fan-shaped disc and is used for limiting the second fan-shaped disc;
the spring is used for realizing the switch isolation closing, switch isolation opening, switch grounding closing and switch grounding opening implementation processes of the switch closing and opening combined structure through an executing component arranged on the rear baffle.
The invention further aims to provide a switch on-off control method of the three-station spring operating mechanism with the locking structure, which comprises the following steps:
and (3) a switch isolation closing process: the second operation shaft is rotated anticlockwise by an operation wrench, a shaft pin connected with a second operation shaft crank arm and a spring starts to be separated from an upper loose joint formed in a second fan-shaped disc, starts to slide along the curved surface of the second fan-shaped disc, when the highest end surface of the curved surface of the second fan-shaped disc is reached, namely the midpoint of the second fan-shaped disc, the spring is compressed to the shortest limit, after the second operation shaft is continuously rotated and passes through the midpoint, under the compression rebound stress of the spring), the shaft pin connected with the second operation shaft crank arm and the spring slides downwards along the curved surface of the second fan-shaped disc, and finally the shaft pin connected with the second operation shaft crank arm and the spring is clamped in a lower loose joint formed in the second fan-shaped disc, and drives the second fan-shaped disc to rotate anticlockwise under the compression rebound stress of the spring, so that the second fan-shaped disc is positioned at a switch isolation closing limit position;
The second main crank arm connected with the second operation shaft crank arm synchronously rotates when the second fan-shaped disc is driven to rotate anticlockwise, so that a second sealing driving plate driving shaft connected with the second main crank arm moves in a groove for a certain angle in a idle way and contacts with the moving sealing driving plate, the moving sealing driving plate is driven to rotate clockwise, meanwhile, a curve slideway arranged on the moving sealing driving plate slides clockwise along a first sealing driving plate driving shaft, and when the tail end of the curve slideway is abutted against the first sealing driving plate driving shaft, the moving sealing driving plate stops rotating under the limiting overshoot action of the first sealing driving plate driving shaft;
And (3) a switch isolation and brake separation process: the second operation shaft is rotated clockwise, a shaft pin connected with the second operation shaft crank arm and the spring starts to be separated from a lower loose joint arranged on the second fan-shaped disc, starts to slide upwards along the curve of the second fan-shaped disc, when the highest end face of the curve of the second fan-shaped disc is reached, namely the midpoint of the second fan-shaped disc, the spring is compressed to the shortest limit, after the second operation shaft is rotated clockwise continuously, the shaft pin connected with the second operation shaft crank arm and the spring slides upwards along the curve of the second fan-shaped disc under the compression rebound stress of the spring after the midpoint is passed, and finally the shaft pin connected with the second operation shaft crank arm and the spring is clamped in an upper loose joint arranged on the second fan-shaped disc, and drives the second fan-shaped disc to rotate clockwise under the compression rebound stress of the spring, so that the second fan-shaped disc is positioned at the switch isolation brake separation limit position;
the second main crank arm connected with the second operation shaft crank arm synchronously rotates when the second fan-shaped disc is driven to rotate clockwise, so that a second sealing driving plate driving shaft connected with the second main crank arm moves in a groove for a certain angle and then contacts with the dynamic sealing driving plate, the dynamic sealing driving plate is driven to rotate anticlockwise, a curve slideway arranged on the dynamic sealing driving plate slides anticlockwise along the first sealing driving plate driving shaft, when the first sealing driving plate driving shaft is positioned in the middle of the curve slideway, the second sealing driving plate driving shaft connected with the second main crank arm is positioned at the top of the groove, and at the moment, the second fan-shaped disc is not limited to rotate by a second limiting pin, and the opening is in place;
and (3) a switch grounding closing process: the first operation shaft is rotated anticlockwise, a shaft pin connected with the first operation shaft crank arm and the spring starts to be separated from a lower loose joint arranged on the first fan-shaped disc, starts to slide along the curved surface of the first fan-shaped disc, when the highest end surface of the curved surface of the first fan-shaped disc is reached, namely the midpoint of the first fan-shaped disc, the spring is compressed to the shortest limit, after the first operation shaft is continuously rotated, the shaft pin connected with the first operation shaft crank arm and the spring slides upwards along the curved surface of the first fan-shaped disc under the compression rebound stress of the spring after the spring passes the midpoint, and finally the shaft pin connected with the first operation shaft crank arm and the spring is clamped in the upper loose joint arranged on the first fan-shaped disc, and drives the first fan-shaped disc to rotate anticlockwise under the compression rebound stress of the spring, so that the first fan-shaped disc is positioned at the switch grounding switch-on limit position;
The first main crank arm connected with the first operation shaft crank arm synchronously rotates with the first operation shaft crank arm while driving the first fan-shaped disc to rotate anticlockwise, so that a curve slideway arranged on a driving plate of a first sealing driving plate connected with the first main crank arm slides anticlockwise;
when the driving shaft of the first sealing driving plate slides to a slide way depression formed in the top end of the curve slide way, the moving sealing driving plate stops rotating, and at the moment, the state of the moving sealing driving plate is synchronous with the state that a shaft pin connected with the crank arm of the first operation shaft and the spring is clamped in an upper movable opening formed in the first fan-shaped plate;
The switch grounding and opening process comprises the following steps: the first operation shaft is rotated clockwise, a shaft pin connected with the first operation shaft crank arm and the spring starts to be separated from an upper loose joint arranged on the first fan-shaped disc, starts to slide along the curved surface of the first fan-shaped disc, when the highest end surface of the curved surface of the first fan-shaped disc is reached, namely the midpoint of the first fan-shaped disc, the spring is compressed to the shortest limit, after the first operation shaft is rotated continuously, the shaft pin connected with the first operation shaft crank arm and the spring slides downwards along the curved surface of the first fan-shaped disc under the compression rebound stress of the spring after the spring passes the midpoint, and finally the shaft pin connected with the first operation shaft crank arm and the spring is clamped in a lower loose joint arranged on the first fan-shaped disc, and drives the first fan-shaped disc to rotate clockwise under the compression rebound stress of the spring, so that the first fan-shaped disc is positioned at the switch grounding brake separating limit position;
The first main crank arm connected with the first operation shaft crank arm synchronously rotates with the first operation shaft crank arm while driving the first fan-shaped disc to rotate clockwise, so that a curve slideway arranged on a driving sealing driving plate of a first sealing driving plate connected with the first main crank arm slides clockwise;
When the driving shaft of the first sealing driving plate slides to the middle part of the curve slide way, the dynamic sealing driving plate stops rotating, and when the first main crank arm is arranged at the middle part of the curve slide way, the first fan-shaped plate is not rotated under the limit of the first limiting pin, and the opening is in place.
Further, in the process of the switch isolation closing: when the movable sealing driving plate stops rotating, the second main crank arm does not move at the same time, at the moment, the movable sealing driving plate stops rotating, and at the moment, the spring is precompressed, and a powerful value is maintained.
Further, in the process of grounding and opening the switch, when the movable sealing driving plate stops rotating, the first main crank arm does not move at the same time, and at the moment, the spring is precompressed, so that a powerful value is maintained.
By combining all the technical schemes, the invention has the following beneficial effects: the invention designs a three-station spring operating mechanism with a locking structure, and according to the design requirement of a switch and the actual needs of a customer, the three-station spring operating mechanism uses related theoretical knowledge, and is of brand new design, simple in structural design, complete in function, simple in transmission, high in efficiency, good in economic benefit, low in cost and reliable in performance.
The three-station isolation spring mechanism of the invention needs to satisfy the following functions: the isolating switch-on position, the isolating (grounding) switch-off position and the grounding switch-on position meet the switch-on and switch-off speed requirement during switch-on and switch-off. The switch matched with the mechanism is a rotary switch, the clamping force of a switch contact is in the range of 220N-260N, the length of a rotary arm is 170mm, the rotation angle from an isolated (grounding) opening position to an isolated closing position is 60 degrees, the rotation angle from the isolated (grounding) opening position to the grounding opening position is 50 degrees, the requirements on the speed of the isolated opening and the grounding opening are not lower than 4.5m/s, the mechanism meets the resistance moment when the switch is opened, namely the opening of the switch is directly driven after the spring of the mechanism is over-center, the opening is not manually pulled, the driving spring force value of the mechanism is large, the strength of transmission parts in the mechanism is high, and the 5000-time mechanical life requirement of the switch is met.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure;
FIG. 1 is a schematic side view of a three-position spring operating mechanism with a locking mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another side structure of a three-position spring operating mechanism with a locking mechanism according to an embodiment of the present invention;
FIG. 3 is a diagram showing a first operating shaft lever rotated by a spring for a three-position spring operating mechanism with a locking structure according to an embodiment of the present invention;
fig. 4 is a combined diagram of on-off switching in the motion of a dynamic seal driving plate of a three-station spring operating mechanism with a locking structure, which is provided by the embodiment of the invention;
FIG. 5 is a side view of a three-position spring operator with a dead lock feature provided in an embodiment of the present invention;
In the figure: 1. a first fan-shaped disc; 2. a second fan-shaped disc; 3. a first operation shaft; 4. a second operation shaft; 5. a first operating shaft lever; 6. a second operating shaft lever; 7. a spring; 8. a first main lever; 9. a second main lever; 10. a first seal dial drive shaft; 11. a second seal dial drive shaft; 12. a dynamic seal dial; 13. a curved slideway; 14. a groove; 15. a front baffle; 16. a rear baffle; 17. a first limit pin; 18. a second limiting pin; 19. isolating the operation hole; 20. a ground operation hole; 21. the switch is combined with the opening and closing structure.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the invention, which is therefore not limited to the specific embodiments disclosed below.
Embodiment 1, as shown in fig. 1 to 5, an embodiment of the present invention provides a three-position spring operating mechanism with a locking structure, including: the first fan-shaped disc 1 and the second fan-shaped disc 2 are respectively connected with a first operation shaft 3 and a second operation shaft 4 in a locking manner; the first operation shaft 3 is also connected with a first operation shaft crank arm 5 positioned at the inner side of the first fan-shaped disc 1 in a locking way, and the second operation shaft 4 is also connected with a second operation shaft crank arm 6 positioned at the inner side of the second fan-shaped disc 2 in a locking way;
the other end of the first operation shaft crank arm 5 is locked and connected with the left end of the spring 7; the other end of the second operation shaft crank arm 6 is locked and connected with the right end of the spring 7;
The first operation shaft 3 is also connected with a first main crank arm 8 positioned at the outer side of the first fan-shaped disc 1 in a locking way, and the second operation shaft 4 is also connected with a second main crank arm 9 positioned at the outer side of the second fan-shaped disc 2 in a locking way;
The first main crank arm 8 is connected with the first sealing drive plate driving shaft 10 in a locking manner, the second main crank arm 9 is connected with the second sealing drive plate driving shaft 11 in a locking manner, the first sealing drive plate driving shaft 10 is accommodated in a curve slideway 13 formed by the dynamic sealing drive plate 12 and freely slides, the second sealing drive plate driving shaft 11 is in hard contact with a groove 14 formed by the dynamic sealing drive plate 12, and under the action of external force, the second sealing drive plate driving shaft 11 slides in the groove 14 so as to realize the implementation processes of switch isolation closing, switch isolation opening, switch grounding closing and switch grounding opening.
In the embodiment of the invention, the number of the first fan-shaped disc 1, the second fan-shaped disc 2, the first operation shaft crank arms 5 and the second operation shaft crank arms 6 is 2, and the first operation shaft crank arms, the second operation shaft crank arms and the second operation shaft crank arms are symmetrically arranged;
the movable sealing driving plate 12 is arranged on the front baffle 15, the switch on-off combined structure 21 is arranged on the rear baffle 16, and the front baffle 15 and the rear baffle 16 are respectively connected and fixed through a first limiting pin 17 and a second limiting pin 18.
In the embodiment of the present invention, the front baffle 15 is respectively provided with a first sliding groove for accommodating the free sliding of the first seal driving plate driving shaft 10 and a second sliding groove for accommodating the free sliding of the second seal driving plate driving shaft 11, the first sliding groove is matched with the curved sliding way 13, and the track of the free sliding of the second seal driving plate driving shaft 11 is consistent with the track of the free sliding of the second seal driving plate driving shaft 11 accommodated by the groove 14.
In the embodiment of the present invention, the rear baffle 16 is provided with an isolation operation hole 19 for accommodating the first operation shaft 3 to freely rotate;
The rear baffle 16 is also provided with a grounding operation hole 20 for accommodating the second operation shaft 4 to freely rotate;
the first limiting pin 17 is in hard contact with an arc-shaped groove formed in the first fan-shaped disc 1 and is used for limiting the first fan-shaped disc 1;
The second limiting pin 18 is in hard contact with an arc-shaped groove formed in the second fan-shaped disc 2 and is used for limiting the second fan-shaped disc 2;
The spring 7 is used for realizing the switch isolation closing, switch isolation opening, switch grounding closing and switch grounding opening implementation processes of the switch closing and opening combined structure 21 through an executing component arranged on the rear baffle 16.
According to the embodiment, the product is stable and reliable in a switch closing test of a test station, the correctness of the locking structure is proved, the product is successfully verified through the test, meanwhile, the structural product is applied to practical use in batches, the stability of the structure is more fully verified in the batch use, the annual sales volume of the product is about 3000 or more at present, the sales volume is gradually enlarged along with the increase of business, the cost of the structural material is saved by 7-8 yuan per table compared with that of the structural material used before, and meanwhile, the labor hour of manual assembly is saved by 10-15 minutes per table. Creating obvious economic benefit for the company. At present, the locking structure is not designed for the same-row like products in the power industry, the invention is designed and used exclusively, and the scheme fills the industry blank.
For switch design reasons, the need to prevent the electric counter-force switch from opening has been a design effort. As described above, most of the products in the same row are internally realized by a relatively complex structure or by increasing the force value of the spring 7, but the effect is not ideal, and the design of the structure is a structure which completely realizes the function requirement, and the structure is simple, plays a key role in improving the reliability of the products in our company, improves the influence of the industry and creates considerable economic benefit. The technical scheme of the invention is simple and reliable, provides a general reference structure for the subsequent structural design of similar three-station products, and can greatly popularize the design structure in the development of new products.
Embodiment 2 of the present invention provides a method for controlling on/off of a switch of a three-station spring operating mechanism with a locking structure, including:
And (3) a switch isolation closing process: when the mechanism is at the opening position, the mechanism has an isolation closing condition; the second operation shaft 4 (isolation operation shaft) is rotated anticlockwise by using an operation wrench, a shaft pin connected with the second operation shaft crank arm 6 and the spring 7 starts to be separated from an upper loose joint formed in the second fan-shaped disc 2 and starts to slide along the curved surface of the second fan-shaped disc 2, when the highest end surface of the curved surface of the second fan-shaped disc 2 is reached, namely the midpoint of the second fan-shaped disc 2, the spring 7 is compressed to the shortest limit, after the second operation shaft 4 is continuously rotated, the spring 7 passes through the midpoint, under the compression rebound stress of the spring 7, the shaft pin connected with the second operation shaft crank arm 6 and the spring 7 slides downwards along the curved surface of the second fan-shaped disc 2, finally the shaft pin connected with the second operation shaft crank arm 6 and the spring 7 is clamped in a lower loose joint formed in the second fan-shaped disc 2, and under the compression rebound stress of the spring 7, the second fan-shaped disc 2 is driven to rotate anticlockwise, so that the second fan-shaped disc 2 is positioned at a switch isolation switch-on limit position;
The second main crank arm 9 connected with the second operation shaft crank arm 6 synchronously rotates with the second operation shaft crank arm 6 when the second fan-shaped disc 2 is driven to rotate anticlockwise, so that the second main crank arm 9 moves in the groove 14 for a certain angle and then contacts the movable sealing dial 12, the movable sealing dial 12 is driven to rotate clockwise, meanwhile, a curve slideway 13 arranged on the movable sealing dial 12 slides clockwise along the first sealing dial driving shaft 10, when the tail end of the curve slideway 13 abuts against the first sealing dial driving shaft 10, the movable sealing dial 12 stops rotating under the limit overshoot effect of the first sealing dial driving shaft 10, and at the moment, the state of the movable sealing dial 12 is synchronous with the state that a shaft pin connected with the second operation shaft crank arm 6 and the spring 7 is clamped in a lower movable opening arranged on the second fan-shaped disc 2;
After the switch-on is in place, the second fan-shaped disc 2 is limited at a switch-on position by the limiting pin, meanwhile, the spring 7 is in a precompressed state, and the force value presses the second fan-shaped disc 2 at the switch-on position, namely, the switch-on position of the mechanism. When a huge electrodynamic force counter force is generated inside the switch, the dynamic seal driving plate 12 is driven to rotate anticlockwise; when the dynamic seal driving plate 12 rotates anticlockwise, the dynamic seal driving plate is blocked by the second main crank arm 9, and the stress direction is below the rotating shaft of the second main crank arm 9 at the moment, namely, the force direction generated by reversing the dynamic seal driving plate 12 enables the second fan-shaped disc 2 to rotate anticlockwise, and when the second fan-shaped disc 2 rotates anticlockwise, the second fan-shaped disc is limited by the second limiting pin 18, so that the aim of closing and locking of a switch is achieved.
And (3) a switch isolation and brake separation process: when the mechanism is at a closing position, the second operation shaft 4 is rotated clockwise under the precondition of opening, a shaft pin connected with the second operation shaft crank arm 6 and the spring 7 starts to be separated from a lower loose joint formed in the second fan-shaped disc 2, starts to slide upwards along the curve of the second fan-shaped disc 2, when the highest end face of the curve of the second fan-shaped disc 2 is reached, namely the midpoint of the second fan-shaped disc 2, the spring 7 is compressed to the shortest limit, when the second operation shaft 4 is rotated clockwise continuously, after the spring 7 passes through the midpoint, under the compression rebound stress of the spring 7, the shaft pin connected with the second operation shaft crank arm 6 and the spring 7 slides upwards along the curve of the second fan-shaped disc 2, finally the shaft pin connected with the second operation shaft crank arm 6 and the spring 7 is clamped in an upper loose joint formed in the second fan-shaped disc 2, and under the compression rebound stress of the spring 7, the second fan-shaped disc 2 is driven to rotate clockwise, so that the second fan-shaped disc 2 is positioned at a switch isolation opening limit position;
The second main crank arm 9 connected with the second operation shaft crank arm 6 rotates synchronously with the second operation shaft crank arm 6 while driving the second fan-shaped disc 2 to rotate clockwise, so that after the second seal dial driving shaft 11 connected with the second main crank arm 9 moves in the groove 14 for a certain angle and idle-distance, the second seal dial 12 is contacted, so that the seal dial 12 is driven to rotate anticlockwise, meanwhile, a curve slide way 13 arranged on the seal dial 12 slides anticlockwise along the first seal dial driving shaft 10, when the first seal dial driving shaft 10 is positioned in the middle of the curve slide way 13, the second seal dial driving shaft 11 connected with the second main crank arm 9 is positioned at the top of the groove 14, at the moment, the second fan-shaped disc 2 is not limited to rotate by the second limiting pin 18, the second main crank arm 9 does not move at the same time, at the moment, the seal dial 12 stops rotating, at the moment, the spring 7 is precompressed, and a certain force value is maintained.
And (3) a switch grounding closing process: when the mechanism is at the opening position, the mechanism has a grounding closing condition, at the moment, the first operation shaft 3 (grounding operation shaft) is rotated anticlockwise, a shaft pin connected with the first operation shaft crank arm 5 and the spring 7 starts to be separated from a lower movable opening (not shown) formed in the first fan-shaped disc 1, starts to slide along the curved surface of the first fan-shaped disc 1, when the highest end surface of the curved surface of the first fan-shaped disc 1 is reached, namely, the midpoint of the first fan-shaped disc 1, the spring 7 is compressed to be the shortest, after the first operation shaft 3 is continuously rotated, the spring 7 passes through the midpoint, under the compression rebound stress of the spring 7, the shaft pin connected with the first operation shaft crank arm 5 and the spring 7 slides upwards along the curved surface of the first fan-shaped disc 1, and finally the shaft pin connected with the first operation shaft crank arm 5 and the spring 7 is clamped in the upper movable opening formed in the first fan-shaped disc 1, and drives the first fan-shaped disc 1 to rotate anticlockwise under the compression rebound stress of the spring 7, so that the first fan-shaped disc 1 is positioned at the limit position of grounding closing of the switch;
When the first fan-shaped disc 1 is driven to rotate anticlockwise, the first main crank arm 8 (grounding crank arm) connected with the first operation shaft crank arm 5 rotates synchronously with the first operation shaft crank arm 5, so that a curve slideway 13 arranged on a dynamic seal dial 12 of a first seal dial driving shaft 10 connected with the first main crank arm 8 slides anticlockwise, when the first seal dial driving shaft 10 slides to a slideway recess (not shown in the figure) arranged at the top end of the curve slideway 13, the dynamic seal dial 12 stops rotating, and at the moment, the state of the dynamic seal dial 12 is synchronous with the state that a shaft pin connected with the first operation shaft crank arm 5 and a spring 7 is clamped in an upper movable opening arranged on the first fan-shaped disc 1;
When the switch is subjected to a grounding closing test and a huge electrodynamic force counter force is generated inside, the movable sealing driving plate 12 is driven to rotate clockwise; when the dynamic seal driving plate 12 rotates clockwise due to the electrodynamic force counterforce, the dynamic seal driving plate 12 is blocked by the first main crank arm 8, and the stressed direction is on the right side of the rotating shaft of the first main crank arm 8 at this time, namely, the force direction generated by reversing the dynamic seal driving plate 12 is that the first fan-shaped disc 1 rotates anticlockwise, and when the first fan-shaped disc 1 rotates anticlockwise, the dynamic seal driving plate is limited by the first limiting pin 17, so that the function of locking a grounding switch is achieved.
The switch grounding and opening process comprises the following steps: when the mechanism is at the closing position, the mechanism has the precondition of opening the gate,
At this time, the first operation shaft 3 (grounding operation shaft) rotates clockwise, the shaft pin connected with the first operation shaft crank arm 5 and the spring 7 starts to separate from the upper loose joint (not shown in the figure) formed on the first fan-shaped disc 1, starts to slide along the curved surface of the first fan-shaped disc 1, when reaching the highest end surface of the curved surface of the first fan-shaped disc 1, namely the midpoint of the first fan-shaped disc 1, the spring 7 is compressed to the shortest limit, when continuing to rotate the first operation shaft 3, after the spring 7 passes through the midpoint, under the compression rebound stress of the spring 7, the shaft pin connected with the first operation shaft crank arm 5 and the spring 7 slides downwards along the curved surface of the first fan-shaped disc 1, finally the shaft pin connected with the first operation shaft crank arm 5 and the spring 7 is clamped in the lower loose joint formed on the first fan-shaped disc 1, and under the compression rebound stress of the spring 7, the first fan-shaped disc 1 is driven to rotate clockwise, so that the first fan-shaped disc 1 is positioned at the switch grounding brake-separating limit position;
When the first fan-shaped disc 1 is driven to rotate clockwise, the first main crank arm 8 (grounding crank arm) connected with the first operation shaft crank arm 5 rotates synchronously with the first operation shaft crank arm 5, so that the curve slide way 13 arranged on the movable seal dial 12 of the first seal dial driving shaft 10 connected with the first main crank arm 8 slides clockwise, when the movable seal dial driving shaft 10 slides to the middle part of the curve slide way 13, the movable seal dial 12 stops rotating, and when the first main crank arm 8 is arranged at the middle part of the curve slide way 13, the first fan-shaped disc 1 is not limited to rotate by the first limiting pin 17, the opening and the closing are in place, the first main crank arm 8 does not move at the same time, the movable seal dial 12 stops rotating, and the spring 7 is precompressed at the moment and keeps a certain force value.
The mechanism has the innovation points that the driving part is used for achieving the reverse driving locking function, and one part is used for achieving two functions, so that the purposes of simple design, high reliability, small number of parts and low cost are achieved. In addition, the invention uses the structure of the dynamic seal driving plate 12, under the condition that the requirements of different customer switch angles are different, the requirement of adapting to various different switch angles can be realized by designing the curve of the dynamic seal driving plate 12, and other parts in the mechanism can be used as general parts.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
While the invention has been described with respect to what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. Three station spring operating mechanism of structure is locked in area, and its characterized in that includes: the first fan-shaped disc (1) and the second fan-shaped disc (2), and the first fan-shaped disc (1) and the second fan-shaped disc (2) are respectively connected with a first operation shaft (3) and a second operation shaft (4) in a locking manner; the first operation shaft (3) is connected with a first operation shaft crank arm (5) positioned at the inner side of the first fan-shaped disc (1) in a locking way, and the second operation shaft (4) is connected with a second operation shaft crank arm (6) positioned at the inner side of the second fan-shaped disc (2) in a locking way;
The other end of the first operation shaft crank arm (5) is locked and connected with the left end of the spring (7); the other end of the second operation shaft crank arm (6) is locked and connected with the right end of the spring (7);
A first main crank arm (8) positioned at the outer side of the first fan-shaped disc (1) is welded on the first operation shaft (3), and a second main crank arm (9) positioned at the outer side of the second fan-shaped disc (2) is welded on the second operation shaft (4);
The first main crank arm (8) is in locking connection with the first sealing drive plate driving shaft (10), the second main crank arm (9) is in locking connection with the second sealing drive plate driving shaft (11), and the first sealing drive plate driving shaft (10) freely slides in a curve slideway (13) formed by the dynamic sealing drive plate (12) so as to realize switch grounding closing and switch grounding opening;
The second seal driving plate driving shaft (11) is in hard contact with a groove (14) formed in the movable seal driving plate (12); under the action of external force, the second sealing driving plate driving shaft (11) slides in the groove (14) so as to realize switch isolation closing and switch isolation opening.
2. The three-position spring operating mechanism with the locking structure according to claim 1, wherein the number of the first fan-shaped disc (1), the second fan-shaped disc (2), the first operating shaft crank arm (5) and the second operating shaft crank arm (6) is 2, and the first operating shaft crank arm, the second operating shaft crank arm and the second operating shaft crank arm are symmetrically arranged.
3. The three-station spring operating mechanism with the locking structure according to claim 1, wherein the movable sealing driving plate (12) is installed on the front baffle plate (15), the switch closing and opening combined structure (21) is installed on the rear baffle plate (16), and the front baffle plate (15) and the rear baffle plate (16) are connected and fixed through a first limiting pin (17) and a second limiting pin (18) respectively.
4. A three-position spring operating mechanism with a locking structure according to claim 3, wherein the front baffle (15) is respectively provided with a first sliding chute for accommodating the free sliding of the driving shaft (10) of the first sealing driving plate and a second sliding chute for accommodating the free sliding of the driving shaft (11) of the second sealing driving plate, and the first sliding chute is matched with the curve sliding way (13).
5. A three-position spring operating mechanism with a locking structure according to claim 3, characterized in that the rear baffle (16) is provided with an isolation operating hole (19) for accommodating the first operating shaft (3) for free rotation and a grounding operating hole (20) for accommodating the second operating shaft (4) for free rotation.
6. A three-position spring operating mechanism with a locking structure according to claim 3, characterized in that the first limiting pin (17) is in hard contact with an arc-shaped groove formed in the first fan-shaped disc (1) for limiting the first fan-shaped disc (1);
the second limiting pin (18) is in hard contact with an arc-shaped groove formed in the second fan-shaped disc (2) and used for limiting the second fan-shaped disc (2).
7. The three-position spring operating mechanism with the locking structure according to claim 1, wherein the spring (7) realizes the switch isolation closing, switch isolation opening, switch grounding closing and switch grounding opening implementation process of the switch closing and opening combined structure (21) through an executing component arranged on a rear baffle plate (16).
8. A method for controlling the opening and closing of a three-position spring operating mechanism with a dead lock structure, characterized in that the method is used for controlling the three-position spring operating mechanism with the dead lock structure according to any one of claims 1 to 7, and the method comprises the following steps:
And (3) a switch isolation closing process: the second operation shaft (4) is rotated anticlockwise by an operation wrench, a shaft pin connected with the second operation shaft crank arm (6) and the spring (7) starts to be separated from an upper loose joint formed on the second fan-shaped disc (2), slides along the curved surface of the second fan-shaped disc (2), and when the middle point of the second fan-shaped disc (2) is reached, the spring (7) is compressed to the limit; continuing to rotate the second operation shaft (4), after the spring (7) passes through the midpoint, under the compression rebound stress of the spring (7), the shaft pin connected with the second operation shaft crank arm (6) and the spring (7) slides downwards along the curve surface of the second sector plate (2); finally, a shaft pin connected with a second operation shaft crank arm (6) and a spring (7) is clamped in a lower movable opening formed in the second fan-shaped disc (2), and the second fan-shaped disc (2) is driven to rotate anticlockwise under the compression rebound stress of the spring (7) so that the second fan-shaped disc (2) is positioned at a switch isolation closing limit position;
The second main crank arm (9) connected with the second operation shaft crank arm (6) synchronously rotates with the second operation shaft crank arm (6) while driving the second fan-shaped disc (2) to rotate anticlockwise, so that a second seal driving plate driving shaft (11) connected with the second main crank arm (9) moves in the groove (14) to contact the movable seal driving plate (12) to drive the movable seal driving plate (12) to rotate clockwise; meanwhile, a curve slide way (13) arranged on the movable sealing driving plate (12) slides clockwise along the first sealing driving plate driving shaft (10), and when the tail end of the curve slide way (13) is abutted against the first sealing driving plate driving shaft (10), the movable sealing driving plate (12) stops rotating under the limit overshoot effect of the first sealing driving plate driving shaft (10);
And (3) a switch isolation and brake separation process: the second operation shaft (4) rotates clockwise, a shaft pin connected with the second operation shaft crank arm (6) and the spring (7) starts to be separated from a lower loose joint formed on the second fan-shaped disc (2), slides upwards along the curve of the second fan-shaped disc (2), and when the midpoint of the second fan-shaped disc (2) is reached, the spring (7) is compressed to the limit; after the second operation shaft (4) is continuously rotated clockwise and the spring (7) passes through the middle point, under the compression rebound stress of the spring (7), a shaft pin connected with the second operation shaft crank arm (6) and the spring (7) slides upwards along the curve of the second sector plate (2); finally, a shaft pin connected with a second operation shaft crank arm (6) and a spring (7) is clamped in an upper movable opening formed in the second fan-shaped disc (2), and the second fan-shaped disc (2) is driven to rotate clockwise under the compression rebound stress of the spring (7) so that the second fan-shaped disc (2) is positioned at a switch isolation brake-separating limit position;
The second fan-shaped disc (2) is driven to rotate clockwise, and meanwhile, a second main crank arm (9) connected with a second operation shaft crank arm (6) and the second operation shaft crank arm (6) rotate synchronously, so that a second sealing dial driving shaft (11) connected with the second main crank arm (9) moves in a groove (14) to contact a dynamic sealing dial (12) to drive the dynamic sealing dial (12) to rotate anticlockwise; meanwhile, a curve slide way (13) arranged on the dynamic seal driving plate (12) slides anticlockwise along the first seal driving plate driving shaft (10), when the first seal driving plate driving shaft (10) is positioned in the middle of the curve slide way (13), a second seal driving plate driving shaft (11) connected with the second main crank arm (9) is positioned at the top of the groove (14), and at the moment, the second fan-shaped plate (2) is limited by the second limiting pin (18) not to rotate, and the opening is in place;
And (3) a switch grounding closing process: the first operation shaft (3) rotates anticlockwise, a shaft pin connected with the first operation shaft crank arm (5) and the spring (7) starts to be separated from a lower loose joint formed in the first fan-shaped disc (1), slides along the curved surface of the first fan-shaped disc (1), when the midpoint of the first fan-shaped disc (1) is reached, the spring (7) is compressed to the limit, the first operation shaft (3) continues to rotate, after the midpoint of the spring (7) is crossed, the shaft pin connected with the first operation shaft crank arm (5) and the spring (7) slides upwards along the curved surface of the first fan-shaped disc (1) under the compression rebound stress of the spring (7); finally, a shaft pin connected with a spring (7) by a first operation shaft crank arm (5) is clamped in an upper movable opening formed in the first fan-shaped disc (1), and the first fan-shaped disc (1) is driven to rotate anticlockwise under the compression rebound stress of the spring (7) so that the first fan-shaped disc (1) is positioned at a switch grounding closing limit position;
the first main crank arm (8) connected with the first operation shaft crank arm (5) synchronously rotates with the first operation shaft crank arm (5) while driving the first fan-shaped disc (1) to rotate anticlockwise, so that a curve slideway (13) arranged on a dynamic seal drive plate (12) of a first seal drive plate driving shaft (10) connected with the first main crank arm (8) slides anticlockwise;
When the first seal driving plate driving shaft (10) slides to a slide way depression formed in the top end of the curve slide way (13), the movable seal driving plate (12) stops rotating, and the state of the movable seal driving plate (12) is synchronous with the state that a shaft pin connected with the first operation shaft crank arm (5) and the spring (7) is clamped in an upper movable opening formed in the first fan-shaped disc (1);
The switch grounding and opening process comprises the following steps: the first operation shaft (3) rotates clockwise, a shaft pin connected with the first operation shaft crank arm (5) and the spring (7) starts to be separated from an upper loose joint formed in the first fan-shaped disc (1) and starts to slide along the curved surface of the first fan-shaped disc (1), and when the midpoint of the first fan-shaped disc (1) is reached, the spring (7) is compressed to the limit; when the first operation shaft (3) is continuously rotated, after the spring (7) passes through the middle point, under the compression rebound stress of the spring (7), a shaft pin connected with the first operation shaft crank arm (5) and the spring (7) slides downwards along the curve surface of the first fan-shaped disc (1), and finally the shaft pin connected with the first operation shaft crank arm (5) and the spring (7) is clamped in a lower loose mouth formed in the first fan-shaped disc (1), and under the compression rebound stress of the spring (7), the first fan-shaped disc (1) is driven to rotate clockwise, so that the first fan-shaped disc (1) is positioned at a switch grounding brake separating limit position;
The first main crank arm (8) connected with the first operation shaft crank arm (5) synchronously rotates with the first operation shaft crank arm (5) while driving the first fan-shaped disc (1) to rotate clockwise, so that a curve slideway (13) arranged on a dynamic seal drive plate (12) of a first seal drive plate driving shaft (10) connected with the first main crank arm (8) slides clockwise;
When the first seal driving plate driving shaft (10) slides to the middle part of the curve slide way (13), the movable seal driving plate (12) stops rotating, and when the first main crank arm (8) is arranged at the middle part of the curve slide way (13), the first fan-shaped plate (1) is not rotated under the limit of the first limiting pin (17), and the opening is in place.
9. The method for controlling the switching on and off of a three-position spring operating mechanism with a locking structure according to claim 8, wherein in the switching-off and isolating switching-on process of the switch: when the movable sealing driving plate (12) stops rotating, the second main crank arm (9) does not move at the same time, at the moment, the movable sealing driving plate (12) stops rotating, and at the moment, the spring (7) is precompressed, so that a powerful value is maintained.
10. The method for controlling the on-off of the switch of the three-position spring operating mechanism with the locking structure according to claim 8, wherein when the movable sealing driving plate (12) stops rotating in the process of grounding and off-switching of the switch, the first main crank arm (8) does not move at the same time, and the spring (7) is precompressed at the moment, so that a powerful value is maintained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410121645.4A CN117790231B (en) | 2024-01-29 | 2024-01-29 | Three-station spring operating mechanism with locking structure and control method |
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| CN202410121645.4A CN117790231B (en) | 2024-01-29 | 2024-01-29 | Three-station spring operating mechanism with locking structure and control method |
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| CN117790231B true CN117790231B (en) | 2024-05-28 |
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| CN104143463A (en) * | 2014-07-15 | 2014-11-12 | 胡光福 | Operating mechanism and operating method for three-position mutual protection interlocking structure |
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| CN117790231A (en) | 2024-03-29 |
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