Clamp plate spring operating mechanism for high voltage circuit breaker and method of use

Abstract

A clamp plate spring operating mechanism and method of use for a high voltage circuit breaker is disclosed.SOLUTION: In the present invention, a closing spring chain is used for connection, and a tie bar and a clamping fork are used for connection of an opening spring, so that the internal arrangement space is saved, the volume and width are reduced, and the present invention is applicable to various scenarios such as a vertical or horizontal operation.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the technical field of spring operating mechanisms for circuit breakers, and more particularly to a clamp plate spring operating mechanism for a high voltage circuit breaker and a method of use. [Background technology]

[0002] In the high-voltage power transmission and transformation industry, the circuit breaker operating mechanism is a core operating device in the high-voltage switchgear industry, and the opening and closing operations of the high-voltage circuit breaker are realized by the operating mechanism.

[0003] The spring operating mechanisms of conventional high-voltage circuit breakers are complex and often limit the interphase distance or the installation space in the width direction, making placement impossible and causing inconvenience in troubleshooting and maintenance work during use.

[0004] A Chinese patent application (disclosure number CN107993881A) discloses a single modular circuit breaker comprising a closing mechanism, an opening mechanism, and an energy storage mechanism, the energy storage mechanism comprising an energy storage spring and a driving device, the driving device driving the energy storage spring by a transmission unit to store energy, the energy storage spring and the transmission unit being mounted on one side of a wall panel, the closing mechanism and the opening mechanism being mounted on the other side of the wall panel in that order to form a modular body, and the driving device being located above the opening mechanism. Although the invention described in this patent application can achieve opening and closing operation by using a spring mechanism, problems remain such as limited installation space and inconvenient opening and closing operation. Summary of the Invention [Problem to be solved by the invention]

[0005] In order to solve the problems in the prior art described above, the present invention aims to provide a clamp plate spring operating mechanism and method for use in a high-voltage circuit breaker, in which a clamp plate mounting module consisting of two clamp plates is used as the mounting base instead of an aluminum cast bracket, the output crank arm is an integrated crank arm instead of a dual output crank arm, and the opening / disengaging system uses a two-stage engagement instead of a three- or four-stage engagement, thereby saving on the number of parts, reducing costs, and achieving safety and reliability. [Means for solving the problem]

[0006] In order to achieve the above object, the technical solutions adopted by the present invention are as follows:

[0007] A clamp plate spring operating mechanism for a high voltage circuit breaker, comprising: a clamp plate and an opening spring; The clamp plate includes a first plate and a second plate disposed opposite to each other, a drive motor is provided on the first plate; the drive motor is connected to a gear train via an output gear; the gear train is meshingly connected to a main gear; A latch roller and a chain fixing device are connected to one side of the main gear, A closing trip latch that fits to the latch roller is provided on the outside of the latch roller; An outer chain is fixedly connected to one end of the chain fixing device, an outer sprocket fixedly connected to the other end of the outer chain; The outer sprocket is connected to an inner sprocket via a rotation shaft, The inner sprocket is connected to a first spring seat via an inner chain, A closing spring is fitted around the outer periphery of the inner chain, the closing spring has an end remote from the first spring seat fixedly connected to a clamp plate; The opening spring has one end fixed to the clamp plate and the other end connected to the second spring seat, The second spring seat has an end opposite to the opening spring connected to an end of the output crank arm, a crank arm shaft is provided at the center of the output crank arm, The other end of the output crank arm is connected to a main body link which is connected to a circuit breaker main body, The main gear is connected to a drive cam and a signal cam via a camshaft, The crank arm shaft is provided with a crank arm roller that fits into a drive cam; The signal cam is provided on the opposite side of the second plate from the first plate.

[0008] the gear train includes a first gear train and a second gear train; the output gear meshes with a first gear train; the first gear train is meshingly connected with a second gear train; The second gear train may be intermeshed with the main gear.

[0009] The closing trip latch may have an arc-shaped notch at one end thereof that fits the latch roller and into which the latch roller is fitted, and a closing electromagnet that can rotate the closing trip latch is provided on the outside of the end thereof. When energized, the closing electromagnet separates the arc-shaped notch of the closing trip latch from the latch roller, thereby releasing the closing spring.

[0010] A first rod member is connected to the other end of the inner chain via a first clamp fork of the rod member, A first spring seat may be connected to the first rod member by a fastener.

[0011] The second plate is provided with a first open-pole electromagnet and a second open-pole electromagnet on the side opposite to the first plate, a plate outer opening external trip latch is provided between the first opening electromagnet and the second opening electromagnet; A latch rotation shaft is fixedly connected to the center of the plate outer opening external trip latch, One end of the latch rotation shaft may pass through the second plate, and an open internal trip latch may be fixedly connected to the second plate on the side facing the first plate.

[0012] A retention latch may be provided outside the open-contact internal trip latch, the retention latch may be connected to a clamp plate via a fixed shaft, the output crank arm may be provided with a cylindrical pin that fits the retention latch, and the retention latch may be received by or released from the cylindrical pin.

[0013] A third clamp fork is connected to the second spring seat at an end opposite to the opening spring, An output crank arm may be connected to the other end of the third clamp fork.

[0014] The number of outer chains may be two.

[0015] The closing spring is One end is engaged with the first spring seat, The other end may have a fixing member fixedly connected to the clamp plate engaged on the outside thereof.

[0016] A method for using the clamp plate spring operating mechanism of the high voltage circuit breaker, comprising: Step S1: rotating a main gear through a gear train, the main gear rotating a signal cam through a camshaft, turning on a stroke switch to send a control signal, and stopping the rotation of the drive motor; Step S2: the main gear drives the chain fixing device to drive the outer chain, which rotates the outer sprocket via the outer chain, and the outer sprocket rotates the inner sprocket via the rotating shaft, and the inner sprocket pulls the inner chain, which pulls the first spring seat, thereby compressing the closing spring; Step S3: pushing and rotating the closing trip latch, disengaging the latch roller engaged with the main gear and releasing the closing spring, thereby starting rotation of the main gear, which rotates the camshaft, which rotates the drive cam, which rotates the driving cam, which pushes and rotates the output crank arm, which rotates and pushes the main body link to close the circuit breaker main body; Step S4 includes pressing the spring seat during the rotation of the output crank arm to compress the opening spring, thereby achieving energy storage by the opening spring. [Effects of the Invention]

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] While conventional clamp plate mechanisms use chain connections for both the open and close pole springs, the present invention employs a chain connection for the close spring and a rod and clamp fork connection for the open spring, thereby saving internal installation space and reducing the volume. The present invention provides separate closing and opening springs and an integrated output crank arm, enabling it to be used in a variety of situations, including vertical and horizontal operation. This facilitates installation, troubleshooting, and maintenance of the spring operating mechanism, especially when the interphase distance of the high-voltage circuit breaker is limited. The device of the present invention has a simple and compact overall structure, a good appearance, easy installation, fewer parts, reduced costs, stable power transmission, and high reliability. This solves the problem of conventional circuit breakers being limited by the volume and width of the operating mechanism itself. By changing the layout of the conventional operating mechanism, the present invention reduces its width, thereby enabling the interphase distance between circuit breakers to be reduced to 400 mm or less.

[0019] Furthermore, in the present invention, the cooperation of multiple gear trains reduces the power required by the drive motor.

[0020] Furthermore, in the present invention, since the number of outer chains is two, the load capacity of the outer chains can be increased. [Brief explanation of the drawings]

[0021] The drawings described in this specification are used only for the purpose of explanation and are not intended to limit the scope of the disclosure of the present invention in any way. Furthermore, the shapes and dimensions of each component in the drawings are schematic to help understand the present invention and are not intended to specifically limit the shapes and dimensions of each component of the present invention. [Figure 1] 1 is a perspective view of the overall structure of the present invention; [Figure 2] FIG. 2 is a rear perspective view of the present invention. [Figure 3] 1 is a schematic diagram of the internal structure of the present invention. [Figure 4] FIG. 1 is a side view of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to allow those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the drawings in the embodiments of the present invention, but it is clear that the described embodiments are only some embodiments of the present invention, and do not represent all embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative work should fall within the protection scope of the present invention.

[0023] It should be noted that when a component is described as being "mounted" on another component, it may be mounted directly on the other component, or an intermediate component may be present. When a component is described as being "connected" to another component, it may be directly connected to the other component, or a central component may also be present. The terms "vertical," "horizontal," "left," "right," and similar terms used herein are for illustrative purposes only and do not imply the only embodiment.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used in the present specification are intended to describe specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] The present invention will now be described in detail with reference to the drawings.

[0026] As shown in Figure 1, the clamp plate spring operating mechanism of the high-voltage circuit breaker of the present invention includes a clamp plate and an opening spring 19. The clamp plate includes a first plate 35 and a second plate 36 disposed opposite each other. A drive motor 7 is provided on the first plate 35, and the drive motor 7 is connected to a gear train via an output gear, and the gear train is connected to and meshes with a main gear 22. A latch roller 33 and a chain fixing device 110 are connected to one side of the main gear 22, and a closing trip latch 23 that fits around the latch roller 33 is provided on the outside of the latch roller 33. The outer chain 11 is fixedly connected to one end of the chain fixing device 110, and the outer sprocket 24 is fixedly connected to the other end of the outer chain 11, and the outer sprocket 24 is connected to the inner sprocket 25 via the rotary shaft 12, and the inner sprocket 25 is connected to the first spring seat 3 via the inner chain 6, and a closing spring 4 is fitted around the outer periphery of the inner chain 6, and the end of the closing spring 4 remote from the first spring seat 3 is fixedly connected to the clamp plate, and the opening spring 19 has one end fixed to the clamp plate and the other end connected to the second spring seat 18, and the second spring seat 19 is fixed to the clamp plate. One end of the crankshaft 22, opposite to the opening spring 19, is connected to an end of the output crank arm 13, a crank arm shaft 130 is provided at the center of the output crank arm 13, the other end of the output crank arm 13 is connected to a main body link 14 which is connected to the circuit breaker main body, the main gear 22 is connected to a drive cam 27 and a signal cam 34 via a camshaft 10, the crank arm shaft 130 is provided with a crank arm roller 131 which fits to the drive cam 27, the signal cam 34 is provided on the side of the second plate 36 opposite to the first plate 35, and the signal cam 34 is connected to a stroke switch which can control the drive motor 7.

[0027] The method for using the clamp plate spring operating mechanism of the high voltage circuit breaker includes the following steps. Step S1: The drive motor 7 rotates the main gear 22 through a gear train, and the main gear 22 rotates the signal cam 34 via the camshaft 10. When the signal cam 34 rotates a predetermined angle, it activates a stroke switch to send a control signal, thereby stopping the rotation of the drive motor 7. Step S2: When the main gear 22 rotates, it drives the chain fixing device 110 to drive the outer chain 11, and the outer chain 11 rotates the outer sprocket 24, and the outer sprocket 24 rotates the inner sprocket 25 via the rotating shaft 12, and the inner sprocket 25 pulls the inner chain 6, and the inner chain 6 pulls the first spring seat 3, thereby compressing the closing spring 4. Step S3: The closing trip latch 23 is pushed and rotated, disengaging the latch roller 33 engaged with the closing trip latch 23 and the main gear 22 and releasing the closing spring 4, thereby starting the rotation of the main gear 22, and as the main gear 22 rotates, it drives the camshaft 10 to rotate, which in turn drives the drive cam 27 to rotate, and the rotating drive cam 27 pushes and rotates the output crank arm 13 via the crank arm roller 131, and as it rotates, the output crank arm 13 drives and moves the main body link 14, thereby closing the circuit breaker main body. Step S4: During the rotation of the output crank arm 13, the second spring seat 18 is pressed to compress the opening spring 19, thereby realizing energy storage by the opening spring 19.

[0028] Embodiment 1 In this embodiment, the clamp plate spring operating mechanism of the high voltage circuit breaker includes a clamp plate, which includes a first plate 35 and a second plate 36 arranged opposite each other, and a drive motor 7 is provided on the first plate 35.

[0029] An output gear is provided to the drive motor 7. The gear train includes a first gear train 8 and a second gear train 9. The first gear train 8 has an outer ring gear and an inner ring gear, and the second gear train 9 has an outer ring gear and an inner ring gear. The output gear meshes with the outer ring gear of the first gear train 8, and the inner ring gear of the first gear train 8 meshes with the outer ring gear of the second gear train 9. The inner ring gear of the second gear train 9 and the outer ring of the main gear 22 mesh with each other. In other words, the output gear meshes with the first gear train 8. The first gear train 8 is connected in mesh with the second gear train 9. The second gear train 9 meshes with the main gear 22.

[0030] A latch roller 33 and a chain fixing device 110 are connected to one side of the main gear 22. Specifically, the chain fixing device 110 has one end fixedly connected to the outer chain 11 and the other end connected to the side of the main gear 22 via a rotating shaft, and the chain fixing device 110 and the rotating shaft are movably connected. The outer sprocket 24 is fixedly connected to the other end of the outer chain 11.

[0031] Alternatively, the number of outer chains 11 may be two.

[0032] The main gear 22 is fixed to the camshaft 10. A drive cam 27 is further provided on the camshaft 10, and the drive cam 27 and latch roller 33 are located on both sides of the main gear 22. Specifically, the drive cam 27 is provided on the side of the first plate 35 facing the second plate 36, and both the latch roller 33 and the main gear 22 are provided on the side of the first plate 35 opposite the second plate 36.

[0033] The outer ring of the main gear 22 is provided with a latch roller 33 corresponding to the closing trip latch 23, and one end of the closing trip latch 23 has an arc-shaped notch corresponding to the latch roller 33, into which the latch roller 33 is fitted, and a closing electromagnet 26 is provided on the outside of the other end, and when current is applied, the closing electromagnet 26 disengages the arc-shaped notch of the closing trip latch 23 from the latch roller 33, thereby releasing the closing spring 4.

[0034] When the drive motor 7 rotates the output gear, the first gear train 8, the second gear train 9, and the main gear 22 are rotated in this order, compressing the closing spring 4 and storing energy. When the closing spring 4 is compressed and energy is stored, the signal cam triggers the stroke switch to send a control signal, stopping the rotation of the drive motor 7, and the latch roller 33 fits into the arc-shaped notch of the closing trip latch 23, so that the latch roller 33 abuts against the closing trip latch 23, causing the main gear 22 to remain stationary. When closing is required, current is applied to the closing electromagnet 26, which applies a magnetic force to the closing trip latch 23, causing it to rotate. As the closing trip latch 23 rotates, its arc-shaped notch separates from the latch roller 33, causing the main gear 22 to rotate in the opposite direction (opposite to the direction of rotation of the main gear 22 when compressing the closing spring 4 to store energy), and further the outer sprocket 24 and the inner sprocket 25 are driven to rotate in the opposite direction (opposite to the direction of rotation of the main gear 22 when compressing the closing spring 4 to store energy), thereby releasing the closing spring 4 and causing the output crank arm 13 to rotate and drive the main body link 14 to move, thereby achieving closing of the circuit breaker main body.

[0035] A rotating shaft 12 is fixedly connected to the center of the outer sprocket 24, and an inner sprocket 25 is fixedly fitted onto the rotating shaft 12. An inner chain 6 is fixedly connected to the inner sprocket 25, and a first rod member 1 is connected to the other end of the inner chain 6 via a first clamp fork 5. The first rod member 1 is connected to a first spring seat 3 via a fastener 2. A closing spring 4 is fitted onto the outside of the first rod member 1. One end of the closing spring 4 is engaged with the first spring seat 3, and the outside of the other end is engaged with a fixing member. Specifically, the fixing members are two fixed rods, which are fixedly connected to an external device and which vertically penetrate the inner chain 6, and the inner chain 6 is located between the two fixed rods. Specifically, both ends of the two fixed rods are fixed to the first plate 35 and the second plate 36, respectively.

[0036] Specifically, the first rod member 1 is a screw rod, and the fastener 2 is a nut.

[0037] A first opening pole electromagnet 28 and a second opening pole electromagnet 29 are provided on the second plate 36 on the side opposite to the first plate 35, and a plate outer opening pole external trip latch 30 is provided between the first opening pole electromagnet 28 and the second opening pole electromagnet 29, and a latch rotation shaft 31 is fixedly connected to the center of the plate outer opening pole external trip latch 30, one end of the latch rotation shaft 31 passes through the second plate 36, and a coaxial plate inner opening pole external trip latch 21 is connected within the second plate 36, and an opening pole internal trip latch 20 is fixedly connected to the plate inner opening pole external trip latch 21 on the side of the second plate 36 facing the first plate 35. A retention latch 32 is provided outside the opening pole internal trip latch 20, and specifically, the retention latch 32 is connected to the first plate 35 and the second plate 36 by a fixed shaft.

[0038] An opening spring 19 is further provided within the clamp plate, and one end of the opening spring 19 is fixed to the clamp plate and the other end is connected to a second spring seat 18. Specifically, the fixed end of the opening spring 19 is fixed by a fixing frame, and the opening spring 19 is placed within the fixing frame.

[0039] The second spring seat 18 is connected to a third clamp fork 17 at its end opposite the opening spring 19, and the other end of the third clamp fork 17 is connected to the output crank arm 13. The other end of the output crank arm 13 is connected to a main body link 14. A crank arm shaft 130 is rotatably connected to the center of the output crank arm 13, and one end of the crank arm shaft 130 is rotatably connected to a crank arm roller 131 via a fixed rotation shaft, and the other end is connected to a cylindrical pin 132 that engages with a retention latch 32 via a fixed rotation shaft. Similar to the connection method between a closing trip latch and a latch roller, the retention latch 32 has an arc-shaped notch that fits the cylindrical pin 132 and into which the cylindrical pin 132 is fitted, and the retention latch 32 can engage or release the cylindrical pin 132. When the retaining latch 32 is received by the cylindrical pin 132, the output crank arm 13 cannot rotate, and the output crank arm 13 can rotate only when the retaining latch 32 releases the cylindrical pin 132. The crank arm roller 131 is provided on the rotation path of the drive cam 27.

[0040] When the circuit breaker body is closed, the retention latch 32 can be received by the cylindrical pin 132, and the opening contact internal trip latch 20 abuts against the end of the retention latch 32, restricting the rotation direction of the retention latch 32. When opening is required, the first opening contact electromagnet 28 and the second opening contact electromagnet 29 attract both ends of the plate outer opening contact external trip latch 30, causing the plate outer opening contact external trip latch 30 to rotate, and the rotation of the plate outer opening contact external trip latch 30 rotates the opening contact internal trip latch 20, releasing the retention latch 32, which is separated from the cylindrical pin 132, causing the output crank arm 13 to rotate in the opposite direction (opposite to the rotation direction in the case of closing), and the body link 14 to move in the opposite direction (opposite to the rotation direction in the case of closing), thereby realizing opening of the circuit breaker body. Furthermore, when the output crank arm 13 rotates in the reverse direction, the third clamp fork 17 is also driven to move to the left (see the orientation shown in FIG. 3), and the opening spring 19 is compressed to store energy.

[0041] Embodiment 2 In this embodiment, the following directions all conform to the directions shown in FIGS.

[0042] When the drive motor 7 is energized, the motor's output gear drives the outer gear of the first gear train 8, the first gear train 8 drives the outer gear of the second gear train 9 through its inner gear, and the second gear train 9 drives the main gear 22 to rotate through its inner gear. The main gear 22 drives the inner camshaft 10 to rotate.

[0043] The main gear 22 is rotationally driven via the gear train, and the main gear 22 rotates the signal cam 34 via the camshaft 10, turns on the stroke switch to send a control signal, and stops the rotation of the drive motor 7.

[0044] During rotation, the main gear 22 drives the chain fixing device 110 to move the outer chain 11 up and down, and the outer chain 11 then drives and rotates the outer sprocket 24. The outer sprocket 24 drives and rotates the inner sprocket 25 via the rotating shaft 12.

[0045] The outer sprocket 24 rotates, and the outer sprocket 24 rotates the inner sprocket 25 via the rotary shaft 12, which pulls the inner chain 6, which pulls the first rod member 1, thereby compressing the closing spring 4. Through this process, the clamp plate spring can perform closing and energy storage operations.

[0046] As shown in FIG. 3, when the closing pole electromagnet 26 is energized, it pushes the closing pole trip latch 23 to rotate it counterclockwise. As the closing pole trip latch 23 rotates, it disengages from the latch roller 33 engaged with the main gear 22, releasing the closing pole spring 4, and thereby causing the main gear 22 to begin rotating.

[0047] The camshaft 10 is driven to rotate by the main gear 22, and the camshaft 10 drives the drive cam 27 to rotate. The rotating drive cam 27 rotates the output crank arm 13 clockwise through its rotation, and the rotation of the output crank arm 13 pushes the main body link 14 to close the circuit breaker main body.

[0048] Furthermore, the output crank arm 13 pushes the second clamp fork 15 while rotating, and the movement of the joint bearing 16, the third clamp fork 17, and the second spring seat 18 compresses the opening spring 19, thereby realizing energy storage by the opening spring 19 of the clamp plate spring operating mechanism.

[0049] When the closing operation of the circuit breaker is completed, the drive motor 7 is energized, the energy storage operation of the closing spring 4 is repeated, and preparations are made for the next closing operation.

[0050] When energized, the first opening pole electromagnet 28 and the second opening pole electromagnet 29 rotate the outer plate opening pole external trip latch 30 counterclockwise by magnetic force, and the outer plate opening pole external trip latch 30 rotates the opening pole internal trip latch 20 counterclockwise via the latch rotation shaft 31. Rotating the opening pole internal trip latch 20 separates it from the holding latch 32, keeping the holding latch 32 and the output crank arm 13 separated.

[0051] At this time, the opening spring 19 releases energy, and the output crank arm 13 is pushed by the second spring seat 18, the third clamp fork 17, the joint bearing 16, and the second clamp fork 15, causing it to rotate counterclockwise as shown in the front view of FIG. 1. The output crank arm 13 then pulls the circuit breaker body by the body link 14, thereby realizing the circuit breaker opening operation.

[0052] When the circuit breaker is opened, the closing electromagnet 26 is energized, and the closing operation and opening energy storage are performed again, and the cycle is repeated in this manner.

[0053] When the signal to the drive motor 7 is cut off and it is disabled to start, the closing and opening operations are performed in sequence, after which troubleshooting and maintenance work can be carried out. To troubleshoot the opening and closing speeds, all that is required is to adjust the compression of the closing spring 4 and the opening spring 19. Because the opening spring 19 is located below the clamp plate spring operating mechanism and the closing spring 4 is located above the clamp plate spring operating mechanism, speed adjustment is quite simple. Because the first opening electromagnet 28, second opening electromagnet 29, and closing electromagnet 26 are all located outside the clamp plate, troubleshooting and maintenance work can be carried out easily.

[0054] In the above aspects of the present invention, various latches are control elements commonly found in mechanical transmissions and precision instruments, and are mainly used to transmit or limit motion, and are commonly found in ratchet mechanisms, watches, and electrical instruments. The core functions of various latches include power transmission, control of intermittent motion, and ensuring mechanical stability.

[0055] In the above-described embodiments of the present invention, the various clamping forks are actually pivotally connected structures, and the main structure of each clamping fork includes a U-shaped frame, the ends of two wings of which are pivotally connected to the component to be connected by a rotation shaft. Referring to Fig. 3, for example, the first clamping fork 5 has a right end that is the U-shaped frame. The ends of the two wings of the U-shaped frame are pivotally connected to the lower end of the output crank arm 13 by a rotation shaft. The left end of the first clamping fork 5 (i.e., the outer surface of the bottom of the U-shaped frame (left side surface in Fig. 3)) is connected to a joint bearing 16. The left end of the joint bearing 16 is pivotally connected to the right ends of the two wings of the U-shaped frame of the third clamping fork 17 by a rotation shaft. The left end of the third clamping fork 17 (i.e., the outer surface of the bottom of the U-shaped frame (left side surface in Fig. 3)) is connected to the right end surface of the second spring seat 18.

[0056] The equipment elements according to the above embodiments are conventional equipment elements unless otherwise specified, and the installation, operation or control methods of such structures are conventional in the art unless otherwise specified.

[0057] It should be noted that the above embodiments are used to explain the technical solutions of the present invention, but are not intended to limit the same. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be included in the scope of the claims of the present invention as long as they do not deviate from the spirit and scope of the technical solutions of the present invention. [Explanation of symbols]

[0058] 1 First rod member 2 Fasteners 3. First spring seat 4 Closing spring 5 First clamp fork 6 Inner Chain 7 Drive motor 8 First Gear Train 9 Second Gear Train 10 Camshaft 11 Outer Chain 110 Chain fixing device 12 Rotation axis 13 Output crank arm 130 crank arm shaft 131 Crank arm roller 132 Cylindrical pin 14 Main Link 15 Second clamp fork 16 Joint bearing 17 Third clamp fork 18 Second spring seat 19 Opening spring 20 Open Internal Trip Latch 21 Plate inner opening pole outer trip latch 22 Main gear 23 Closing trip latch 24 outer sprocket 25 inner sprocket 26 Closed pole electromagnet 27 Drive Cam 28 First open pole electromagnet 29 Second open pole electromagnet 30 Plate outer opening external trip latch 31 Latch rotation axis 32 Retaining Latch 33 Latch roller 34 Signal Cam 35 Plate 1 36 Second Plate

Claims

1. A clamp plate spring operating mechanism for a high voltage circuit breaker, comprising: a clamp plate and an opening spring (19); The clamp plate includes a first plate and a second plate disposed opposite to each other, A drive motor (7) is provided on the first plate, The drive motor (7) is connected to a gear train via an output gear; The gear train is meshingly connected to a main gear (22), A latch roller (33) and a chain fixing device (110) are connected to one side of the main gear (22); A closing trip latch (23) that fits to the latch roller (33) is provided on the outside of the latch roller (33), An outer chain (11) is fixedly connected to one end of the chain fixing device (110), The other end of the outer chain (11) is fixedly connected to an outer sprocket (24), The outer sprocket (24) is connected to an inner sprocket (25) via a rotating shaft (12), The inner sprocket (25) is connected to the first spring seat (3) via the inner chain (6), A closing spring (4) is fitted around the outer periphery of the inner chain (6), The closing spring (4) has an end remote from the first spring seat (3) fixedly connected to a clamping plate; The opening spring (19) has one end fixed to the clamp plate and the other end connected to the second spring seat (18). The second spring seat (18) has an end opposite to the opening spring (19) connected to an end of the output crank arm (13); A crank arm shaft (130) is provided at the center of the output crank arm (13), The other end of the output crank arm (13) is connected to a main body link (14) connected to the circuit breaker main body, The main gear (22) is connected to a drive cam (27) and a signal cam (34) via a camshaft (10); The crank arm shaft (130) is provided with a crank arm roller (131) that fits to the drive cam (27); 10. A clamp plate spring operating mechanism for a high voltage circuit breaker, wherein the signal cam (34) is provided on the second plate on the side opposite to the first plate.

2. The gear train includes a first gear train (8) and a second gear train (9); The output gear meshes with a first gear train (8), said first gear train (8) is meshingly connected with a second gear train (9); 2. The clamp plate spring operating mechanism of claim 1, wherein the second gear train (9) is intermeshed with the main gear (22).

3. 2. The clamp plate spring operating mechanism for a high-voltage circuit breaker according to claim 1, wherein one end of the closing trip latch (23) has an arc-shaped notch that fits a latch roller (33) and into which the latch roller (33) is fitted, and a closing electromagnet (26) that can rotate the closing trip latch (23) is provided on the outside of the end.

4. The other end of the inner chain (6) is connected to a first rod member (1) via a first clamp fork (5), 2. The clamp plate spring operating mechanism for a high voltage circuit breaker according to claim 1, wherein a first spring seat (3) is connected to the first rod member (1) by a fastener (2).

5. The second plate is provided with a first open-pole electromagnet (28) and a second open-pole electromagnet (29) on the opposite side to the first plate, A plate outer opening external trip latch (30) is provided between the first opening electromagnet (28) and the second opening electromagnet (29), A latch rotation shaft (31) is fixedly connected to the center of the plate outer opening external trip latch (30), 2. The clamp plate spring operating mechanism for a high-voltage circuit breaker according to claim 1, wherein one end of the latch rotation shaft (31) penetrates the second plate, and an open internal trip latch (20) is fixedly connected to a side of the second plate facing the first plate.

6. 6. The clamp plate spring operating mechanism for a high-voltage circuit breaker according to claim 5, wherein a retention latch (32) is provided outside the open-contact internal trip latch (20), the retention latch (32) is connected to the clamp plate via a fixed shaft, the output crank arm (13) is provided with a cylindrical pin (132) that fits the retention latch (32), and the retention latch (32) can be received by or released from the cylindrical pin (132).

7. A third clamp fork (17) is connected to the second spring seat (18) at the end opposite to the opening spring (19), 2. The clamp plate spring operating mechanism for a high-voltage circuit breaker according to claim 1, wherein the other end of the third clamp fork (17) is connected to an output crank arm (13).

8. 2. The clamp plate spring operating mechanism for a high voltage circuit breaker according to claim 1, wherein the number of outer chains (11) is two.

9. The closing spring (4) is One end is engaged with the first spring seat (3), 2. The clamp plate spring operating mechanism for a high voltage circuit breaker according to claim 1, wherein a fixing member fixedly connected to the clamp plate is engaged with the outside of the other end.

10. A method for using the clamp plate spring operating mechanism of a high voltage circuit breaker according to any one of claims 1 to 9, comprising: Step S1: Rotating the main gear (22) via a gear train, the main gear (22) rotates the signal cam (34) via the camshaft (10), turns on the stroke switch to send a control signal, and stops the rotation of the drive motor (7); Step S2: the main gear (22) drives the chain fixing device (110) to drive the outer chain (11), which rotates the outer sprocket (24) via the outer chain (11), and the outer sprocket (24) rotates the inner sprocket (25) via the rotating shaft (12), which pulls the inner chain (6), which pulls the first spring seat (3), thereby compressing the closing spring (4); Step S3: pushing and rotating the closing trip latch (23), disengaging the latch roller (33) engaged with the main gear (22) and releasing the closing spring (4), thereby starting the rotation of the main gear (22), causing the main gear (22) to rotate the camshaft (10), causing the camshaft (10) to rotate and drive the drive cam (27), causing the rotation of the rotating drive cam (27) to push and rotate the output crank arm (13), and the rotation of the output crank arm (13) causes the main body link (14) to push and close the circuit breaker main body; and step S4 of pressing the second spring seat (18) during the rotation process of the output crank arm (13) to compress the opening spring (19) and realize energy storage by the opening spring (19).

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