阅读说明：本技术 一种快速开关分合闸操作机构 (Quick switch divides closing operation mechanism ) 是由 朱忠建 韩伟 唐建 衣陈晨 周海东 于 2018-08-02 设计创作，主要内容包括：本发明公开了一种快速开关分合闸操作机构,属于开关电器技术领域。本发明包括套筒、固定杆、上连接杆和下连接杆；所述套筒套设于上连接杆外部,套筒和上连接杆上均设置有沿轴向延伸的孔,所述固定杆从所述孔穿过,所述固定杆的位置固定,从而使套筒和上连接杆均可相对于固定杆上下运动,所述下连接杆上设置有连锁杆,所述上连接杆上还设置有沿轴向延伸的活动孔,所述连锁杆穿过活动孔安装在下连接杆上,从而使上连接杆可相对于活动孔上下运动。本发明结构简单、分闸速度快,解决电磁斥力机构与分合闸永磁机构的刚性碰撞问题,在紧急分闸过程中,电磁斥力机构与分合闸永磁机构完全独立,永磁机构不会影响电磁斥力机构的分闸速度,避免刚性碰撞导致的弹跳,提高快速开关的分闸速度。(The invention discloses a rapid switch opening and closing operation mechanism, and belongs to the technical field of switch electric appliances. The invention comprises a sleeve, a fixed rod, an upper connecting rod and a lower connecting rod; the telescopic sleeve is arranged outside the upper connecting rod, holes extending along the axial direction are formed in the sleeve and the upper connecting rod, the fixing rod penetrates through the holes, the position of the fixing rod is fixed, so that the sleeve and the upper connecting rod can move up and down relative to the fixing rod, a linkage rod is arranged on the lower connecting rod, a movable hole extending along the axial direction is further formed in the upper connecting rod, the linkage rod penetrates through the movable hole and is installed on the lower connecting rod, and therefore the upper connecting rod can move up and down relative to the movable hole. The invention has simple structure and high opening speed, solves the problem of rigid collision between the electromagnetic repulsion mechanism and the opening and closing permanent magnetic mechanism, and in the emergency opening process, the electromagnetic repulsion mechanism and the opening and closing permanent magnetic mechanism are completely independent, and the permanent magnetic mechanism can not influence the opening speed of the electromagnetic repulsion mechanism, thereby avoiding the bounce caused by rigid collision and improving the opening speed of the quick switch.)

1. The utility model provides a quick switch divide-shut brake operating device which characterized in that: comprises a sleeve (1), a fixed rod (3), an upper connecting rod (2) and a lower connecting rod (7); connecting rod (2) outside is located to sleeve (1) cover, all is provided with the hole of following axial extension on sleeve (1) and last connecting rod (2), dead lever (3) are followed the hole passes, the rigidity of dead lever (3) to make sleeve (1) and last connecting rod (2) all for dead lever (3) up-and-down motion, be provided with even locking lever (6) down on connecting rod (7), still be provided with movable hole (23) along axial extension on going up connecting rod (2), even locking lever (6) pass movable hole (23) and install under on connecting rod (7), thereby make connecting rod (2) can be for movable hole (23) up-and-down motion.

2. The quick switch opening and closing operation mechanism according to claim 1, wherein: the hole extending along the axial direction on the sleeve (1) is a kidney-shaped hole (11); the hole which is arranged on the upper connecting rod (2) and extends along the axial direction is an arm clamping hole (22).

3. The quick switch opening and closing operation mechanism according to claim 2, wherein: the axial extension length of the waist-shaped hole is smaller than that of the arm clamping hole.

4. The quick switch opening and closing operation mechanism according to claim 1, wherein: the upper connecting rod (2) is provided with a clamping arm hole (22), and a clamping arm (4) is arranged in the upper connecting rod (2); and a spring (5) is arranged between the lower part of the clamping arm (4) and the bottom of the upper connecting rod (2), and when the clamping arm (4) is positioned in the clamping arm hole (22), the clamping arm (4) is ejected out of the clamping arm hole (22) by the elastic force of the spring (5).

5. The quick switch opening and closing operation mechanism according to claim 1, wherein: the upper connecting rod (2) is also provided with a marble (21); the sleeve (1) is provided with a locking hole, and the marble (21) is ejected from the locking hole when aligned with the locking hole.

6. The quick switch opening and closing operation mechanism according to claim 5, wherein: the locking hole is provided with 2 along the axial.

7. The quick switch opening and closing operation mechanism according to claim 4, wherein: the upper end of the clamping arm (4) is rotatably arranged in the upper connecting rod (2).

8. The quick switch opening and closing operation mechanism according to claim 4, wherein: spring (5) are the torsional spring, including supporting the section and suppressing the section, support the section and support in last connecting rod (2) bottom, suppress the outer end of section and block arm (4) looks butt, and exert outside thrust to block arm (4).

9. The quick switch opening and closing operation mechanism according to claim 4, wherein: when the upper connecting rod (2) moves upwards relative to the sleeve (1), the upper edge of the clamping arm (4) gradually reaches the lower edge of the sleeve (1), and the clamping arm (4) is rotated by the acting force of the sleeve (1) on the clamping arm (4), so that the exposed part of the clamping arm (4) is withdrawn from the clamping arm hole (22).

10. The quick switch opening and closing operation mechanism according to claim 9, wherein: and an arc-shaped transition surface is arranged on one side, close to the sleeve (1), of the clamping arm (4).

Technical Field

The invention belongs to the technical field of switching devices, and particularly relates to a switching-on and switching-off operating mechanism for a quick switch.

Background

With the continuous increase of the capacity of the direct current system and the continuous improvement of the voltage level, the indexes of the short-circuit current peak value and the on-off time of the direct current breaker are also continuously improved. Although the traditional mechanical switch has the advantages of strong loading capacity and stable conduction, the response speed is slow, generally about 5-20 ms, and the requirement of quick action can not be met; the solid-state switch of the power electronics has high response speed, but the on-state loss is overlarge, and the voltage resistance is low. The hybrid direct current circuit breaker composed of the rapid mechanical switch and the solid-state device has the advantages of large through-current capacity, high turn-off speed, strong current limiting capacity and the like, and has great potential in the field of direct current breaking.

The hybrid direct current breaker is composed of the two switches, and under a normal working condition, working current is borne by a branch circuit where the mechanical switch is located. When short-circuit fault occurs, the mechanical switch branch firstly cuts off fault current and switches the current to the power electronic branch. The overvoltage and energy generated in the switching-off process are limited and absorbed by the energy absorption loop. The hybrid direct current circuit breaker integrates the advantages of a mechanical switch and a solid-state electronic switch, can realize the rapid arc-free short-circuit current breaking, and is a necessary direction for the technical development of the direct current switch. Among them, the research of the fast mechanical switch is one of the key technologies of the hybrid dc circuit breaker.

The response speed of the traditional circuit breaker operating mechanism, such as a hydraulic mechanism and a spring mechanism, is slow, and the requirement on the action time of a quick mechanical switch in a direct current circuit breaker is difficult to achieve. The design scheme of the rapid mechanical switch at the present stage mostly uses double electromagnetic repulsion mechanisms, two repulsion coils and two sets of driving loops are needed, the size of the mechanism and the driving loops is large, the cost is high, and the miniaturization and intensification of the circuit breaker are not facilitated. Therefore, the fast mechanical switch at the present stage is mostly in the stages of theoretical research and principle prototype, no reliable engineering application case exists yet, and the development and the use of the hybrid direct current circuit breaker are seriously influenced. The electromagnetic repulsion mechanism can rapidly reach a thrust peak value within dozens to hundreds of microseconds and is far faster than the action time of the electromagnet or the permanent magnet mechanism, when the electromagnetic repulsion mechanism is switched off, the electromagnet or the permanent magnet mechanism still provides a switching-on holding force, so that the switching-off speed of the rapid mechanical switch can be reduced, the switching-off time is prolonged, and meanwhile, the rigid collision between the electromagnetic repulsion mechanism and the switching-on holding mechanism can be caused, and the bouncing phenomenon is caused.

Chinese patent application 201720539425.9 discloses a piston mechanism of quick mechanical switch, including separating brake coil, pull rod, piston cylinder, closing coil, repulsion dish, slider and spring all establish in the piston rod, the one end and the piston cylinder of spring offset, and the other end offsets with the one end of slider, the repulsion dish is established in the inner chamber of piston cylinder, and the repulsion dish is connected with the other end of slider is articulated, pull rod and repulsion dish fixed connection, separating brake coil and closing coil establish respectively in the upper and lower both sides of repulsion dish, and are equipped with the clearance between separating brake coil and the repulsion dish. The utility model discloses an electronic repulsion divide-shut brake mechanism has integrateed to for mechanical switch provides the branch, combined floodgate state holding power, alleviate moving contact mechanism quality simultaneously, improved divide-shut brake speed. However, the fast switch uses the double electromagnetic repulsion mechanisms, two repulsion coils and two sets of driving loops are needed, the mechanism and the driving loops have larger volumes and high cost, and the miniaturization and intensification of the circuit breaker are not facilitated.

Disclosure of Invention

The invention aims to: aiming at the defects in the prior art, the opening and closing operation mechanism with simple structure and high opening and closing speed is provided, and the problem of rigid collision between the electromagnetic repulsion mechanism and the opening and closing permanent magnet mechanism can be solved.

Specifically, the invention is realized by adopting the following technical scheme:

a quick switch opening and closing operation mechanism comprises a sleeve, a fixed rod, an upper connecting rod and a lower connecting rod; the telescopic sleeve is arranged outside the upper connecting rod, holes extending along the axial direction are formed in the sleeve and the upper connecting rod, the fixing rod penetrates through the holes, the position of the fixing rod is fixed, so that the sleeve and the upper connecting rod can move up and down relative to the fixing rod, a linkage rod is arranged on the lower connecting rod, a movable hole extending along the axial direction is further formed in the upper connecting rod, the linkage rod penetrates through the movable hole and is installed on the lower connecting rod, and therefore the upper connecting rod can move up and down relative to the movable hole.

Furthermore, the hole which is arranged on the sleeve and extends along the axial direction is a kidney-shaped hole; the hole which is arranged on the upper connecting rod and extends along the axial direction is a clamping arm hole.

Further, the axial extension length of the waist-shaped hole is smaller than that of the arm clamping hole.

Furthermore, the upper connecting rod is provided with a clamping arm hole, and a clamping arm is arranged in the upper connecting rod; and a spring is arranged between the lower part of the clamping arm and the bottom of the upper connecting rod, and when the clamping arm is positioned at the position of the clamping arm hole, the clamping arm is ejected out of the clamping arm hole by the elastic force of the spring.

Furthermore, the upper connecting rod is also provided with a marble; the sleeve is provided with a locking hole, and the marble is ejected from the locking hole when aligned with the locking hole.

Further, the locking hole is provided with 2 along the axial direction.

Further, the upper end of the clamp arm is rotatably mounted in the upper connecting rod.

Further, the spring is the torsional spring, including supporting the section and suppressing the section, support the section and support in last connecting rod bottom, the outer end and the card arm looks butt of suppressing the section, and exert outside thrust to the card arm.

Further, when the upper connecting rod moves upwards relative to the sleeve, the upper edge of the clamping arm gradually reaches the lower edge position of the sleeve, the clamping arm is rotated by the acting force of the sleeve on the clamping arm, and therefore the exposed part of the clamping arm is retracted from the clamping arm hole.

Furthermore, an arc-shaped transition surface is arranged on one side, close to the sleeve, of the clamping arm.

The invention has the following beneficial effects:

the opening and closing operation mechanism is simple in structure and high in opening and closing speed, the problem of rigid collision between an electromagnetic repulsion mechanism and an opening and closing permanent magnet mechanism is solved, in the emergency opening process, the electromagnetic repulsion mechanism and the opening and closing permanent magnet mechanism are completely independent, the permanent magnet mechanism cannot influence the opening speed of the electromagnetic repulsion mechanism, the bouncing phenomenon caused by rigid collision is avoided, and the opening speed of the quick switch is improved; meanwhile, the electromagnetic repulsion mechanism and the permanent magnetic mechanism can realize brake separating operation, two groups of completely independent brake separating mechanisms are provided, under the condition of fault working conditions, the electromagnetic repulsion mechanism is used for realizing rapid brake separating, and under the normal working conditions, the permanent magnetic mechanism is used for realizing normal brake separating, so that the action times of the permanent magnetic mechanism are reduced, and the reliability and the service life of rapid switching are greatly improved.

Drawings

Fig. 1 is a front view of a structure of a quick switch opening and closing operation mechanism.

Fig. 2 is an exploded view of the quick switch opening and closing operation mechanism.

Fig. 3 is a left side view of the structure of the rapid switch opening and closing operation mechanism.

Fig. 4 is a front view of the internal assembly of the quick switch opening and closing operation mechanism.

Fig. 5 is a perspective view of the internal assembly of the rapid switch opening and closing operation mechanism.

FIG. 6 is a schematic diagram of the initial state of the opening operation under the normal condition.

Fig. 7 is a schematic view of a state after the opening operation starts under the normal condition.

Fig. 8 is a schematic diagram of the state of the opening operation under the normal condition.

Fig. 9 is a schematic diagram of the initial state of the closing operation under the normal working condition.

Fig. 10 is a schematic view of a state after the start of the closing operation in the normal operation.

Fig. 11 is a schematic diagram of the intermediate state of the closing operation under the normal working condition.

Fig. 12 is a schematic view showing a closing operation completion state in a normal operating condition.

FIG. 13 is a diagram illustrating an initial state of emergency opening under a fault condition.

FIG. 14 is a diagram illustrating a state after an emergency opening operation starts in a fault condition.

FIG. 15 is a diagram illustrating an intermediate state of emergency opening under a fault condition.

FIG. 16 is a schematic diagram illustrating an emergency opening completion state under a fault condition.

Reference numerals in the drawings: 1-sleeve, 11-waist-shaped hole, 12-upper locking hole, 13-lower locking hole, 2-upper connecting rod, 21-marble, 22-clamping arm hole, 23-movable hole, 3-fixed rod, 4-clamping arm, 5-spring, 6-interlocking rod and 7-lower connecting rod.

Detailed Description

The present invention will be described in further detail with reference to the following examples and the accompanying drawings.