Novel rapid isolation switch type electric braking device

Abstract

The invention discloses a novel quick isolating switch type electric braking device, which consists of an isolated-phase enclosed busbar cylinder, a main loop conductor, a static contact, a movable guide rod, a short-circuit copper bar, a transmission mechanism, an operating mechanism, a control box and the like, and is characterized in that the electric braking device is in three-phase linkage control, and is in three-phase short circuit at the tail end of the device to form a braking short-circuit current; contact of a moving contact and a static contact of a main loop of the device is designed in a sliding connection mode, the transmission mechanism integrally adopts a swing rod mode to drive a moving guide rod to ascend or descend, and the operating mechanism is composed of a three-phase asynchronous motor, a gear reducer, an energy storage assembly, a crank arm assembly and other elements. And the transmission mechanism is driven by the external swing arm and the connecting rod to perform quick opening and closing actions.

Description

Technical Field

[0001] The invention relates to a complete set of power switchgear for generators of medium-voltage large hydropower stations or pumped-storage power stations, belongs to the field of power equipment design and manufacturing, and particularly relates to a novel fast isolating switch type electrical brake device. Background Art

[0003] The working principle of the electrical braking device is based on the armature reaction of the synchronous motor. When the unit is disconnected from the power grid and the generator rotor is demagnetized, the speed drops to a certain range (generally 50% to 60% of the rated speed), the electrical braking device is put into use, the three phases of the stator are short-circuited, and the excitation current is added to the generator at the same time, so that it produces an electromagnetic torque in the opposite direction of the unit's inertia moment, thereby achieving electrical braking and rapid shutdown. The electrical braking device has the characteristics of large current flow in a short time (duration of about 3-5 minutes), small temperature rise, and the ability to close large current. Since the pumped storage unit has two operating conditions, power generation and pumping, it is necessary to put the electrical braking device into use to improve the operating efficiency in order to stop the unit in a short time to switch the operating conditions.

[0004] The existing technical route of electric brake complete sets is mostly SF6 circuit breaker type. Although this solution can achieve the requirement of rapid shutdown of generator sets, for the shutdown of larger units, the short-time rated current of the device can reach about 10,000A. Its manufacturing cost is huge, and its volume and floor space are also large, and its economic practicality is low.

[0005] According to the operating conditions of the electrical brake device, when the generator speed drops to about 5% of its rated speed, the electrical brake device will execute the opening command. At this time, the terminal voltage of the device is very low, the circuit current is also very small, and the opening condition is relatively ideal, so the device does not have the functional requirements of breaking large fault current and rated current. Under the closing condition, the generator speed drops to about half of the rated speed before the electrical brake device is put into use, with a certain terminal voltage and circuit current, so the device must meet the requirements of closing the expected current. The key factors that determine the success or failure of closing the expected current mainly lie in the closing speed and arc extinguishing system of the device. The design points and difficulties of the new fast disconnector type electrical brake device also lie in this. As long as a certain closing speed and arc-initiating measures are guaranteed during closing, and no serious ablation of the moving and static contacts is caused, the device will close successfully, and the contacts can be used for a long time without replacement, thereby fundamentally solving the problem of high maintenance frequency and high maintenance cost of the device. Summary of the invention

[0006] The main purpose of the present invention is to provide a novel fast isolating switch type electrical brake device, aiming to solve the existing technical problems.

[0007] To achieve the above-mentioned object, the present invention provides a novel fast disconnecting switch type electrical brake device, comprising a phase-isolated enclosed busbar barrel, a main circuit conductor, an arcing contact and a static contact, wherein the phase-isolated enclosed busbar barrel is provided with a main circuit conductor, a static contact support is welded at the lower end of the main circuit conductor for fixing the static contact, and the arcing contact is mounted on the static contact seat;

[0008] It also includes a moving contact, a strap contact finger, a moving guide rod outer tube, a moving guide rod, a short-circuit copper busbar, an insulating rod, an outer insulating tube, an operating mechanism, a control box, and a transmission assembly. The moving contact is installed on the top of the moving guide rod. The internal rib plate of the moving guide rod is connected and fixed to a transmission optical axis. The outside is the moving guide rod outer tube. Three large-current strap contact fingers are installed on the upper end of the inner part of the moving guide rod outer tube. The short-circuit copper busbar is respectively installed between the moving guide rod outer tube and the outer insulating tube of the three phases of the equipment. The insulating rod is placed on the inner side of the outer insulating tube, and the upper and lower ends are respectively connected to the transmission optical axis and the transmission assembly. The outer swing arm on the operating mechanism is connected to the transmission assembly.

[0009] Furthermore, the main circuit conductor is a current carrier of the main circuit, has a cylindrical shape, and interfaces at both ends are regular octagons.

[0010] Furthermore, the contact fingers of the watchband are in the form of double dovetail type and are elastic, the flow capacity of each contact finger is about 100A, each contact finger has about 52 pieces in total, and the contact points are linear contacts.

[0011] Furthermore, three large current band contact fingers, which are the same as those inside the outer tube of the moving guide rod, are installed inside the static contact.

[0012] Furthermore, the transmission optical axis is made of metal and is connected to the rib plate inside the moving guide rod, and passes through the outer tube of the moving guide rod and the outer insulating tube to connect the insulating rod.

[0013] Furthermore, the insulating rod is in the form of epoxy casting and has an umbrella skirt structure on the outside.

[0014] Further, the transmission assembly includes a transmission fixed support, a transmission connecting rod, a transmission swing rod, a transmission top rod, a transmission linkage swing rod and a transmission rotating swing rod, the outer swing arm on the operating mechanism is connected to the transmission connecting rod, the transmission swing rod is connected to the transmission connecting rod, and the transmission swing rod is fixed on the rotating shaft of the base and rotates left and right with the rotating shaft as the center of the circle, and the transmission linkage swing rod is fixed on the rotating shaft of the base and rotates around the rotating shaft;

[0015] When the switch is closed, the operating mechanism drives its outer swing arm to rotate rightward, driving the transmission connecting rod and the transmission swing rod to move rightward. When the energy storage component in the operating mechanism moves to the critical point, the spring energy is quickly released to achieve a rapid closing action trend.

[0016] When the switch is closed, the transmission rocker arm drives the transmission linkage rocker arm to rotate clockwise. While the transmission linkage rocker arm rotates clockwise, it drives the transmission rotating rocker arm to rotate counterclockwise with the transmission fixed support as the center, and drives the transmission top rod to move upward, thereby realizing the closing action.

[0017] Furthermore, the waist hole at the connecting end of the transmission rocker arm allows the transmission rocker arm to maintain a constant distance from the transmission connecting rod when performing circular motion, thereby ensuring that the transmission connecting rod performs horizontal left-right motion.

[0018] Furthermore, the waist hole at the connecting end of the transmission fixed support enables the transmission rotating rocker arm to maintain a constant distance from the transmission top rod when performing circular motion. During the rotational motion, the fulcrum of the transmission rotating rocker arm slides in the waist hole to realize vertical upward movement of the transmission top rod.

[0019] Furthermore, the operating mechanism includes a three-phase asynchronous motor, a gear reducer and a crank arm assembly. The three-phase asynchronous motor and the gear reducer provide a power source to drive the crank arm assembly to rotate. A rotating arm related to the spring energy storage assembly is installed on the crank arm assembly.

[0020] The beneficial effects of the present invention are embodied in:

[0021] Compared with the traditional SF circuit breaker type electrical brake device, the electrical brake device based on the fast isolating switch type has great advantages in terms of simplicity of mechanism, equipment cost and electrical control. It not only has good three-phase linkage mechanical characteristics and fast closing characteristics, but also has special electrical arc-starting contacts, excellent electrical performance and extended electrical life.

[0022] Since the electrical brake device is installed on the generator outlet side, when the generator main circuit is normally energized, the electrical brake device is in the open state. Once an electrical error occurs or the insulation of the break is broken, it will cause a two-phase or three-phase short circuit accident at the generator outlet. Therefore, the fast isolating switch type electrical brake device has a significantly larger isolation break in the open position. Compared with the SF6 circuit breaker type electrical brake device, the present invention has better insulation performance and also improves the safety of the generator main circuit.

[0023] The opening and closing action of the fast disconnector type electrical brake device of the present invention is realized by driving the transmission mechanism with the motor, and the mechanical transmission efficiency is high, and the power source power required for the transmission is relatively small (about 800W). In addition, the disconnector type electrical brake device does not have the disc spring required for closing the circuit breaker type electrical brake device and the self-closing force that needs to be overcome for opening the circuit breaker type electrical brake device, so the driving power required for opening and closing the circuit breaker type electrical brake device is smaller, thereby improving the mechanical life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A schematic diagram of the opening of a fast isolating switch type electrical brake device provided in an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of closing the fast isolating switch type electrical brake device provided in an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the gate opening position of the device operating mechanism provided in an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of a closing position of an operating mechanism of a device provided in an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of a device driving source assembly provided in an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] Figure 1 In: 1. Phase-separated enclosed busbar barrel; 2. Main circuit conductor; 3. Arcing contact; 4. Static contact; 5. Moving contact; 6. Band contact finger; 7. Moving guide rod outer barrel; 8. Moving guide rod; 9. Short-circuit copper bar; 10. Insulating rod; 11. Outer insulating barrel; 12. Transmission fixed support; 13. Transmission connecting rod; 14. Transmission swing rod; 15. Transmission top rod; 16. Transmission linkage swing rod; 17. Transmission rotating swing rod; 18. Operating mechanism; 19. Control box;

[0031] Figure 3 In: 181, spring fixed base; 182, energy storage spring; 183, telescopic rod; 184, spring crank arm; 185, fixed flange; 186, buffer; 187, auxiliary switch; 188, opening and closing position indicator; 189, driving source assembly; 1810, coupling; 1811, spring pressure plate; 1812, slider nut; 1813, output shaft; 1814, buffer crank arm; 1815, auxiliary switch connecting rod; 1816, screw rod; 1817, power crank arm; 1818, travel switch; 1819, crank handle hole; 1820, auxiliary switch crank arm;

[0032] Figure 5 Chinese: 1891, three-phase asynchronous motor; 1892, gear reducer. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] The present invention provides a novel fast disconnect switch type electrical brake device, comprising a phase-isolated closed busbar barrel 1, a main circuit conductor 2, an arc-striking contact 3 and a static contact 4. The phase-isolated closed busbar barrel 1 is provided with the main circuit conductor 2, a static contact support is welded at the lower end of the main circuit conductor 2, and is used to fix the static contact 4. The arc-striking contact 3 is installed on the static contact seat, which can better protect the static contact from arc erosion.

[0035] It also includes a moving contact 5, a strap contact finger 6, a moving guide rod outer tube 7, a moving guide rod 8, a short-circuit copper busbar 9, an insulating rod 10, an outer insulating tube 11, an operating mechanism 18, a control box 19, and a transmission assembly. The moving contact 5 is installed on the top of the moving guide rod 8. The internal ribs of the moving guide rod 8 are connected and fixed to a transmission optical axis. The outside is the moving guide rod outer tube 7. Three large-current strap contact fingers 6 are installed on the upper end of the inner part of the moving guide rod outer tube 7. The short-circuit copper busbar 9 is respectively installed between the moving guide rod outer tube 7 and the outer insulating tube 11 of the three phases of the equipment. A through hole is opened in the middle of the installation position to facilitate the insulating rod 10 to pass through when the moving guide rod 8 moves. The three-phase short-circuit copper busbar is overlapped between every two phases, and an insulator is used to support between every two phases. The short-circuit braking current after the three-phase closing of the device is formed in the short-circuit copper busbar; the insulating rod 10 is placed on the inner side of the outer insulating tube 11, and the upper and lower ends are respectively connected to the transmission optical axis and the transmission assembly. The outer swing arm on the operating mechanism 18 is connected to the transmission assembly.

[0036] In a specific embodiment, the main circuit conductor 2 is a current carrier of the main circuit and has a cylindrical shape with regular octagons at both ends.

[0037] In a specific embodiment, the contact finger of the watch strap contact finger 6 is in the form of a double dovetail type and is elastic. The flow capacity of each contact finger is about 100A. There are about 52 contact fingers in each row. The contact point is linear contact, and the flow capacity is stronger, so as to better realize the moving guide rod 8 sliding up and down in the moving guide rod outer tube 7.

[0038] In a specific embodiment, three large current band contact fingers, which are the same as those inside the outer tube 7 of the moving guide rod, are installed inside the static contact 4 and can slide and closely contact with the moving contact 5 .

[0039] In a specific embodiment, the transmission optical axis is made of metal and is connected to the rib plate inside the moving guide rod 8 , and passes through the moving guide rod outer tube 7 and the outer insulating tube 11 to connect to the insulating rod 10 .

[0040] In a specific embodiment, the insulating rod 10 is in the form of epoxy casting and has an umbrella skirt structure on the outside.

[0041] In a specific embodiment, the static arc-striking contact is installed on the static contact seat, and its shape is a round rod structure. A cylinder made of copper-tungsten alloy is fixed on the top of the contact, which has the characteristics of high melting point and is not easy to ablate; the moving arc-striking contact is installed on the top of the moving contact, and its material is also copper-tungsten alloy, and a petal-shaped moving guide rod is installed inside it to facilitate the insertion and disengagement of the static arc-striking contact. When the closing action is performed, the moving contact moves toward the static contact side, and the arc-striking contact inside it contacts first, and the burning of the arc will be concentrated on the arc-striking contact, protecting the safety of the moving and static contacts.

[0042] In a specific embodiment, the outer swing arm on the operating mechanism 18 is connected to the transmission link 13, and the transmission swing rod 14 is connected to the transmission link 13, and the transmission swing rod 14 is fixed on the rotating shaft of the base and rotates left and right around the rotating shaft. The transmission linkage swing rod 16 is also fixed on the rotating shaft of the base and rotates around the rotating shaft.

[0043] In a specific embodiment, the transmission rocker arm 14 drives the transmission linkage rocker arm 16 to rotate clockwise. When the transmission linkage rocker arm 16 rotates clockwise, it drives the transmission rotating rocker arm 17 to rotate counterclockwise with the transmission fixed support 12 as the center, and drives the transmission top rod 15 to move upward, thereby realizing the closing action.

[0044] In a specific embodiment, the driving source composed of a three-phase asynchronous motor 1891 and a gear reducer 1892 is connected to a screw rod 1816 through a coupling 1810, and a slider nut 1812 is installed on the screw rod 1816. The crank arm assembly is composed of a fixed flange 185, a spring crank arm 184, a buffer crank arm 1814, an output shaft 1813, a power crank arm 1817 and an auxiliary switch crank arm 1820. The spring crank arm 184, the buffer crank arm 1814, the auxiliary switch crank arm 1820 and the power crank arm 1817 are all installed on the output shaft 1813 and are staggered in the axial space; the output shaft 1813 is a power output interface, which is connected to an external swing arm; the auxiliary switch crank arm 1820 is connected to the auxiliary switch connecting rod 1815, and a waist hole is opened at the end of the connecting rod, so that when the auxiliary switch crank arm 1820 performs a rotational motion, the auxiliary switch connecting rod 1815 maintains a horizontal linear motion. The whole set of crank arm assembly is fixed to the box of the operating mechanism through the fixing flange 185. One end of the energy storage spring 182 is fixed to the spring crank arm 184, and the other end is fixed to the spring fixing base 181. The telescopic rod 183 inside it is used for spring compression guidance. The buffer 186 is mainly used for the device to buffer the closing and opening positions. One is set for the closing position and the opening position respectively, and is used in conjunction with the buffer crank arm 1814 to prevent overshoot.

[0045] In a specific embodiment, the control box 19 is installed above the operating mechanism 18, and the three-phase asynchronous motor, travel switch and auxiliary switch wiring harness in the operating mechanism are all led into the control box through the through holes of the operating mechanism box shell; the control box is also equipped with a contactor for controlling the forward and reverse rotation of the motor, necessary motor protectors, indicator lights, buttons, terminal blocks and other secondary components.

[0046] Figure 1 The diagram shows the opening of a fast isolating switch type electrical brake device. When the device needs to be closed, the operating mechanism 18 provides a power source to drive its outer swing arm to rotate to the right, thereby driving the transmission connecting rod 13 and the transmission swing rod 14 to move to the right. The waist hole at the connecting end of the transmission swing rod 14 allows it to maintain a constant distance from the transmission connecting rod 13 when it moves in an arc, thereby ensuring that the transmission connecting rod 13 moves horizontally left and right. The movement of the transmission swing rod 14 drives the transmission linkage swing rod 16 to rotate clockwise. While the transmission linkage swing rod 16 rotates clockwise, it drives the transmission rotating swing rod 17 to rotate counterclockwise with the transmission fixed support 12 as the center of the circle, and drives the transmission top rod 15 to move upward, thereby realizing the closing action. Similarly, the waist hole at the connecting end of the transmission fixed support 12 allows the transmission rotating swing rod 17 to maintain a constant distance from the transmission top rod 15 when it moves in an arc. During the rotational movement, the fulcrum of the transmission rotating swing rod 17 slides in the waist hole, realizing the vertical upward movement of the transmission top rod 15.

[0047] Figure 2 This is a schematic diagram of the closing of the fast isolating switch type electrical brake device. When the device needs to be opened, the operating mechanism 18 provides a reverse power source to drive the external swing rod to move in the reverse direction, so the movement direction of the transmission mechanism is opposite to the closing direction, and its movement principle will not be repeated.

[0048] Figure 3The figure is a schematic diagram of the device operating mechanism. When the device needs to close the switch, the three-phase asynchronous motor in the operating mechanism rotates forward with power, outputting power to the screw 1816. The slider nut 1812 moves horizontally to the left under the rotation of the screw 1816, driving the power crank arm 1817 connected thereto to rotate clockwise, so that the output shaft 1813 obtains the corresponding torque output. The end of the power crank arm 1817 is provided with a waist-shaped slot hole, which can ensure that when the power crank arm 1817 rotates, the slider nut 1812 moves horizontally on the screw 1816. The buffer crank arm 1814, the spring crank arm 184, and the auxiliary switch crank arm 1820 also rotate together under the rotation of the output shaft 1813. As the spring crank arm 184 rotates clockwise, the energy storage spring 182 is continuously compressed until the rotation angle exceeds the critical point, the energy of the energy storage spring 182 is released, the rotation speed of the output shaft 1813 increases instantaneously, and the closing action is accelerated. When the slider nut 1812 moves to the leftmost end of the screw rod 1816 and hits the closing position travel switch 1818, the three-phase asynchronous motor is immediately powered off, power is no longer output, and the switch is closed.

[0049] After the three-phase asynchronous motor is powered off, it will continue to rotate at a low speed due to inertia, and the output torque will continue to decrease. The slider nut 1812 continues to move toward the left end of the screw rod 1816. The optical axis section at the left end of the screw rod 1816 can realize the clutch function, so that the slider nut 1812 idles in this section. At this time, the spring pressing plate 1811 makes the screw nut 1812 and the thread of the screw rod 1816 reliably contact, preparing for the reverse rotation of the screw rod 1816.

[0050] After the device is opened or closed, the auxiliary switch 187 is switched as the auxiliary switch arm 1820 rotates, and the opening and closing position indicator 188 will make a corresponding position switch and indicate whether it is currently in the open position or the closed position.

[0051] Figure 4 When the device needs to be opened, the three-phase asynchronous motor 1891 in the operating mechanism 18 is energized and reversed, and the internal screw assembly, crank arm assembly, energy storage assembly and auxiliary switch assembly move in the opposite direction to the closing position, and the specific movement principle will not be repeated.

[0052] Figure 5 The diagram is a schematic diagram of the driving source components of the device. The three-phase asynchronous motor 1891 provides the power source for the device, and the gear reducer 1892 provides a speed reduction service for the movement of the device.

[0053] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0054] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of rapid isolating switch type electrical brake device, characterized in that: The invention comprises a phase-isolated enclosed busbar barrel (1), a main circuit conductor (2), an arc-striking contact (3) and a stationary contact (4); the phase-isolated enclosed busbar barrel (1) is provided with a main circuit conductor (2); a stationary contact support is welded to the lower end of the main circuit conductor (2) for fixing the stationary contact (4); and the arc-striking contact (3) is mounted on the stationary contact seat; The invention also comprises a moving contact (5), a band contact finger (6), a moving guide rod outer tube (7), a moving guide rod (8), a short-circuit copper bar (9), an insulating rod (10), an outer insulating tube (11), an operating mechanism (18), a control box (19), and a transmission assembly. The moving contact (5) is mounted on the top of the moving guide rod (8). The inner rib plate of the moving guide rod (8) is connected and fixed to a transmission optical axis. The outer tube (7) of the moving guide rod is provided. Three large current band contact fingers (6) are mounted on the upper end of the inner part of the moving guide rod outer tube (7). The short-circuit copper bar (9) is respectively mounted between the moving guide rod outer tube (7) and the outer insulating tube (11) of the three phases of the equipment. The insulating rod (10) is placed inside the outer insulating tube (11). The upper and lower ends of the insulating rod are respectively connected to the transmission optical axis and the transmission assembly. The outer swing arm on the operating mechanism (18) is connected to the transmission assembly.

2. A novel rapid isolating switch type electrical brake device as claimed in claim 1, characterized in that: The main circuit conductor (2) is a current carrier of the main circuit and is cylindrical in shape, with regular octagonal interfaces at both ends.

3. A novel rapid isolating switch type electrical brake device as claimed in claim 1, characterized in that: The contact finger of the watchband contact finger (6) is in the form of a double dovetail type and is elastic. The flow capacity of each contact finger is about 100A. There are about 52 contact fingers in each row, and the contact points are linear contacts.

4. A novel rapid isolating switch type electrical brake device as claimed in claim 1, characterized in that: The inner side of the static contact (4) is provided with three large current meter contact fingers which are the same as those inside the outer cylinder of the moving guide rod (7).

5. A novel rapid isolating switch type electrical brake device as claimed in claim 1, characterized in that: The transmission optical axis is made of metal and is connected to the rib plate inside the moving guide rod (8), passing through the moving guide rod outer cylinder (7) and the outer insulating cylinder (11) to connect to the insulating rod (10).

6. A novel rapid isolating switch type electrical brake device as claimed in claim 1, characterized in that: The insulating rod (10) is in the form of epoxy casting and has an umbrella skirt structure on the outside.

7. A novel rapid isolating switch type electrical brake device as claimed in claim 1, characterized in that: The transmission assembly comprises a transmission fixed support (12), a transmission connecting rod (13), a transmission swing rod (14), a transmission top rod (15), a transmission linkage swing rod (16) and a transmission rotating swing rod (17); the outer swing arm on the operating mechanism (18) is connected to the transmission connecting rod (13); the transmission swing rod (14) is connected to the transmission connecting rod (13); the transmission swing rod (14) is fixed on the rotating shaft of the base and rotates left and right with the rotating shaft as the center; the transmission linkage swing rod (16) is fixed on the rotating shaft of the base and rotates around the rotating shaft; When the switch is closed, the operating mechanism (18) drives its outer swing arm to rotate rightward, driving the transmission connecting rod (13) and the transmission swing rod (14) to move rightward. When the energy storage component in the operating mechanism (18) moves to a critical point, the spring energy is quickly released, thereby realizing a rapid closing action trend. When the switch is closed, the transmission swing rod (14) drives the transmission linkage swing rod (16) to rotate clockwise. When the transmission linkage swing rod (16) rotates clockwise, it drives the transmission rotating swing rod (17) to rotate counterclockwise with the transmission fixed support (12) as the center, and drives the transmission top rod (15) to move upward, thereby realizing the closing action.

8. A novel rapid isolating switch type electrical brake device as claimed in claim 7, characterized in that: The waist hole at the connecting end of the transmission rocker (14) allows the transmission rocker (14) to maintain a constant distance from the transmission connecting rod (13) when performing circular motion, thereby ensuring that the transmission connecting rod (13) performs horizontal left-right motion.

9. A novel rapid isolating switch type electrical brake device as claimed in claim 7, characterized in that: The waist hole at the connecting end of the transmission fixed support (12) enables the transmission rotating swing rod (17) to maintain a constant distance from the transmission top rod (15) when performing circular motion. During the rotational motion, the fulcrum of the transmission rotating swing rod (17) slides in the waist hole, thereby realizing the vertical upward motion of the transmission top rod (15).

10. A novel rapid isolating switch type electrical brake device as claimed in claim 1, characterized in that: The operating mechanism (18) comprises a three-phase asynchronous motor (1891), a gear reducer (1892) and a crank arm assembly. The three-phase asynchronous motor (1891) and the gear reducer (1892) provide a power source to drive the crank arm assembly to perform rotational motion. A rotating arm associated with a spring energy storage assembly is mounted on the crank arm assembly.

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