阅读说明：本技术 一种高压跌落开关的分闸装置 (Brake separating device of high-voltage drop switch ) 是由 陈武 罗刚 余伟 熊俊峰 赵政洪 吴刚 于 2021-09-28 设计创作，主要内容包括：本发明公开了一种高压跌落开关的分闸装置,包括开关模块、采集模块、CPU模块和通信模块,开关模块用于控制分闸装置的电路切断；采集模块用于采集配电设备的工作参数与环境参数；CPU模块用于处理所述采集模块采集的数据,并控制所述开关模块工作；通信模块用于与配电主站通信；本发明通过采集模块对配电设备的工作参数和环境参数进行采集,并将其输送至CPU模块内进行判断,当需要对高压跌落开关分闸时,通过控制开关模块实现分闸操作。(The invention discloses a switching-off device of a high-voltage drop switch, which comprises a switch module, an acquisition module, a CPU module and a communication module, wherein the switch module is used for controlling the circuit of the switching-off device to be cut off; the acquisition module is used for acquiring working parameters and environmental parameters of the power distribution equipment; the CPU module is used for processing the data acquired by the acquisition module and controlling the switch module to work; the communication module is used for communicating with the power distribution main station; the invention collects the working parameters and the environmental parameters of the power distribution equipment through the collection module, transmits the working parameters and the environmental parameters into the CPU module for judgment, and realizes the switching-off operation through the control switch module when the high-voltage drop switch needs to be switched off.)

1. The utility model provides a high voltage drop switch's separating brake device which characterized in that includes:

the switch module is used for controlling the circuit of the opening device to be cut off;

the acquisition module is used for acquiring working parameters and environmental parameters of the power distribution equipment;

the CPU module is used for processing the data acquired by the acquisition module and controlling the switch module to work;

the communication module is used for communicating with the power distribution main station;

the signal output end of the acquisition module is electrically connected with the signal input end of the CPU module, the communication end of the CPU module is electrically connected with the signal end of the communication module, and the control end of the CPU module is electrically connected with the signal end of the CPU module;

the acquisition module comprises:

the current acquisition module is used for acquiring the zero sequence current of the high-voltage drop switch;

the voltage acquisition module is used for acquiring the zero sequence voltage of the high-voltage drop switch;

the temperature acquisition module is used for acquiring the temperature of the power distribution equipment;

the oil level acquisition module is used for acquiring the oil level of the distribution transformer;

the gas acquisition module is used for acquiring the gas state of the distribution transformer;

the smoke sensing module is used for acquiring the environmental smoke intensity of the power distribution equipment;

the flame module is used for detecting whether the power distribution equipment and the environment are burnt or not;

the signal output ends of the current collection module, the voltage collection module, the temperature collection module, the oil level collection module, the gas collection module, the smoke sensing module and the flame module are all electrically connected with the signal input end of the CPU module.

2. The opening device of a high-voltage drop switch according to claim 1, wherein the switch module comprises:

a housing, wherein a storage cavity is arranged inside the housing;

the first end of the first conductive connecting plate is rotatably connected with the lower supporting seat of the high-voltage drop switch and is electrically connected with the high-voltage drop switch;

the first end of the second conductive connecting plate is rotatably connected with the lower supporting seat of the high-voltage drop switch and is electrically connected with the high-voltage drop switch, and the second end of the first conductive connecting plate is in contact with and is electrically conductive with the second end of the second conductive connecting plate and is communicated with the circuit of the high-voltage drop switch for circulation;

the insulating ejector rod is vertically arranged in the shell and is positioned below a contact point of the first conductive connecting plate and the second conductive connecting plate;

the driving assembly is fixedly arranged in the shell, is connected with the lower end of the insulating ejector rod and drives the insulating ejector rod to move up and down;

when the insulating ejector rod moves to the uppermost position, the upper end of the insulating ejector rod is arranged between the second end of the first conductive connecting plate and the second end of the second conductive connecting plate.

3. The opening device of a high-voltage drop switch according to claim 2, further comprising:

the support is fixedly connected with the lower supporting seat, a vertical guide hole is formed in the support, and the insulating ejector rod is arranged in the guide hole and can slide up and down along the guide hole;

and the adjusting screw is arranged below the first conductive connecting plate, the upper end of the adjusting screw is abutted against the first conductive connecting plate, and the adjusting screw is in threaded connection with the support.

4. The tripping device of a high-voltage drop switch according to claim 2, wherein a magnetic attraction component is arranged between the second end of the first conductive connecting plate and the second end of the second conductive connecting plate, and the magnetic attraction component comprises:

the permanent magnet is fixedly connected with the second end of the first conductive connecting plate/the second conductive connecting plate;

the ferromagnetic block is fixedly connected with the second end of the second conductive connecting plate/the second end of the first conductive connecting plate;

the permanent magnet blocks and the ferromagnetic blocks are adsorbed by magnetic force.

5. The opening device of a high-voltage drop switch according to claim 2, wherein the driving assembly comprises:

the insulating connecting rod is provided with a first end and a second end, and the first end of the insulating connecting rod is rotatably connected with the lower end of the insulating ejector rod;

the upper end of the tension spring is fixedly connected with the second end of the insulating connecting rod, the lower end of the tension dry spring is fixedly connected with the shell, and the tension spring applies downward acting force to the second end of the insulating connecting rod;

a latch assembly connected to the second end of the insulating link, the latch assembly applying an upward force to the second end of the insulating link;

and the supporting rotating shaft is fixedly connected with the shell and arranged between the first end and the second end of the insulating connecting rod, and the insulating connecting rod winds the supporting rotating shaft to rotate.

6. The opening device of a high-voltage drop switch according to claim 5, wherein the locking assembly comprises:

an insulated lever having a first end and a second end and disposed above the insulated link;

the supporting point is fixedly connected with the shell and arranged between the first end and the second end of the insulating lever, and the insulating lever rotates around the supporting point;

the first hook is fixedly connected with the second end of the insulating connecting rod;

the second hook is fixedly connected with the first end of the insulating lever, and the first hook is clamped with the second hook;

and the lifting component is connected with the second end of the insulating lever and controls the second end of the insulating lever to move up and down.

7. The opening device of a high-voltage drop switch according to claim 6, wherein the first hook is provided with a first vertical section facing the supporting rotation shaft, the second hook is provided with a second vertical section facing the supporting point, and the first vertical section is attached to the second vertical section;

the friction force between the first vertical section and the second vertical section is not less than the tension force of the tension spring;

the first vertical section is tangent to a rotation circle of the second end of the insulating connecting rod, and the second vertical section is tangent to a rotation circle of the first end of the insulating lever.

8. The opening device of a high-voltage drop switch according to claim 6, wherein the lifting assembly comprises:

the first electromagnet is fixedly arranged below the second end of the insulating lever, and the control end of the first electromagnet is electrically connected with the CPU module;

and a metal block which is magnetically adsorbed with the first electromagnet is arranged at the second end of the insulating lever.

9. The disconnecting device of a high-voltage drop switch according to claim 8, wherein the lifting assembly further comprises a second electromagnet fixedly disposed at the second end of the insulating lever and disposed corresponding to the first electromagnet, and a control end of the second electromagnet is electrically connected to the CPU module.

10. The opening device of a high-voltage drop switch according to claim 6, wherein the distance between the supporting point and the first end of the insulating lever is greater than the distance between the supporting point and the second end of the insulating lever;

and a reset ring used for pulling down the ejector rod is arranged at the first end of the insulating connecting rod.

Technical Field

The invention relates to the technical field of power equipment, in particular to a switching-off device of a high-voltage drop switch.

Background

The transmission and distribution network in China has the characteristics of wide area distribution and large geometric size, and is very easy to be threatened by natural disasters such as forest and grassland fires. In recent years, with the development of power resources, more and more power transmission lines pass through mountain forest areas and grassland areas, and grassland mountain fires are easily caused by unique landforms and climatic conditions of the areas.

Forest and grassland fire areas are generally easy to occur on branch lines of a transmission and distribution network, and the branch line equipment is mainly a high-voltage drop switch and does not have the capacity of removing ground faults through remote control and automatic protection. While the arc light caused by the ground fault can cause forest and grassland fire, the tower equipment is burnt if the arc light is light, and the national huge loss is caused if the arc light is heavy, so that the major power accident which cannot be recovered for a long time is caused. According to incomplete statistical data, the forest and grassland fire caused by grounding of the power transmission and distribution lines causes great threat and serious loss to China, and accidents caused by the forest and grassland fire due to grounding of the lines and the like occur in foreign countries such as south africa, brazil, the united states and australia.

The existing method for processing the ground fault of the small-current grounding system mainly comprises a manual pulling method, a device line selection method, a main station line selection method, a fault indicator line selection method and the like, and has the defects of long analysis and judgment time and poor accuracy in the technical aspect.

At present, a transmission and distribution network line does not have the capability of monitoring and isolating forest and grassland fires, particularly, a small-grounding line selection method of branch line equipment of the distribution network is not mature, judgment is inaccurate and timely, the current requirement on the prevention of the forest and grassland fires of the power network is higher and higher, a national institute office of government has issued national forest and grassland fire emergency plan again in 26 months in 2020, the source prevention and control are enhanced for the forest and grassland fire prevention, the risk of the forest and grassland fires is prevented, the forest and grassland fires are effectively and orderly treated, casualties and property losses are reduced to the maximum extent, the forest and grassland resources are protected, and therefore the function of researching and developing the forest and grassland fire faults prevention function of the transmission and distribution network is urgent, and the function needs to be perfected urgently.

And the distribution equipment at the present stage does not have the function of remote control, even if automatic judgment is realized, if all the distribution equipment needs to be replaced, great manpower and material resources need to be consumed.

Disclosure of Invention

The invention aims to solve the technical problems that a transmission and distribution network at the present stage does not have fire monitoring and isolating capabilities and does not have installation type automatic equipment, and aims to provide a brake separating device of a high-voltage drop switch, so that the problem of the fire processing function of the transmission and distribution network is solved.

The invention is realized by the following technical scheme:

an opening device of a high-voltage drop switch comprises:

the switch module is used for controlling the circuit of the opening device to be cut off;

the acquisition module is used for acquiring working parameters and environmental parameters of the power distribution equipment;

the CPU module is used for processing the data acquired by the acquisition module and controlling the switch module to work;

the communication module is used for communicating with the power distribution main station;

the acquisition module comprises:

the current acquisition module is used for acquiring the zero sequence current of the high-voltage drop switch;

the voltage acquisition module is used for acquiring the zero sequence voltage of the high-voltage drop switch;

the temperature acquisition module is used for acquiring the temperature of the power distribution equipment;

the oil level acquisition module is used for acquiring the oil level of the distribution transformer;

the gas acquisition module is used for acquiring the gas state of the distribution transformer;

the smoke sensing module is used for acquiring the environmental smoke intensity of the power distribution equipment;

the flame module is used for detecting whether the power distribution equipment and the environment are burnt or not;

the signal output ends of the current collection module, the voltage collection module, the temperature collection module, the oil level collection module, the gas collection module, the smoke sensing module and the flame module are all electrically connected with the signal input end of the CPU module.

Specifically, the switch module includes:

a housing, wherein a storage cavity is arranged inside the housing;

the first end of the first conductive connecting plate is rotatably connected with the lower supporting seat of the high-voltage drop switch and is electrically connected with the high-voltage drop switch;

the first end of the second conductive connecting plate is rotatably connected with the lower supporting seat of the high-voltage drop switch and is electrically connected with the high-voltage drop switch, and the second end of the first conductive connecting plate is in contact with and is electrically conductive with the second end of the second conductive connecting plate and is communicated with the circuit of the high-voltage drop switch for circulation;

the insulating ejector rod is vertically arranged in the shell and is positioned below a contact point of the first conductive connecting plate and the second conductive connecting plate;

the driving assembly is fixedly arranged in the shell, is connected with the lower end of the insulating ejector rod and drives the insulating ejector rod to move up and down;

when the insulating ejector rod moves to the uppermost position, the upper end of the insulating ejector rod is arranged between the second end of the first conductive connecting plate and the second end of the second conductive connecting plate.

Further, the switch module further includes:

the support is fixedly connected with the lower supporting seat, a vertical guide hole is formed in the support, and the insulating ejector rod is arranged in the guide hole and can slide up and down along the guide hole;

and the adjusting screw is arranged below the first conductive connecting plate, the upper end of the adjusting screw is abutted against the first conductive connecting plate, and the adjusting screw is in threaded connection with the support.

Preferably, the second end of the even board of first electrically conductive with be provided with magnetism between the second end of the even board of second electrically conductive and inhale the subassembly, magnetism inhales the subassembly and includes:

the permanent magnet is fixedly connected with the second end of the first conductive connecting plate/the second conductive connecting plate;

the ferromagnetic block is fixedly connected with the second end of the second conductive connecting plate/the second end of the first conductive connecting plate;

the permanent magnet blocks and the ferromagnetic blocks are adsorbed by magnetic force.

Specifically, the drive assembly includes:

the insulating connecting rod is provided with a first end and a second end, and the first end of the insulating connecting rod is rotatably connected with the lower end of the insulating ejector rod;

the upper end of the tension spring is fixedly connected with the second end of the insulating connecting rod, the lower end of the tension dry spring is fixedly connected with the shell, and the tension spring applies downward acting force to the second end of the insulating connecting rod;

a latch assembly connected to the second end of the insulating link, the latch assembly applying an upward force to the second end of the insulating link;

and the supporting rotating shaft is fixedly connected with the shell and arranged between the first end and the second end of the insulating connecting rod, and the insulating connecting rod winds the supporting rotating shaft to rotate.

Specifically, the latch assembly includes:

an insulated lever having a first end and a second end and disposed above the insulated link;

the supporting point is fixedly connected with the shell and arranged between the first end and the second end of the insulating lever, and the insulating lever rotates around the supporting point;

the first hook is fixedly connected with the second end of the insulating connecting rod;

the second hook is fixedly connected with the first end of the insulating lever, and the first hook is clamped with the second hook;

and the lifting component is connected with the second end of the insulating lever and controls the second end of the insulating lever to move up and down.

Preferably, the first hook is provided with a first vertical section facing the supporting rotating shaft, the second hook is provided with a second vertical section facing the supporting point, and the first vertical section is attached to the second vertical section;

the friction force between the first vertical section and the second vertical section is not less than the tension force of the tension spring;

the first vertical section is tangent to a rotation circle of the second end of the insulating connecting rod, and the second vertical section is tangent to a rotation circle of the first end of the insulating lever.

Specifically, the lifting assembly includes:

the first electromagnet is fixedly arranged below the second end of the insulating lever, and the control end of the first electromagnet is electrically connected with the CPU module;

and a metal block which is magnetically adsorbed with the first electromagnet is arranged at the second end of the insulating lever.

Furthermore, the lifting assembly further comprises a second electromagnet which is fixedly arranged at the second end of the insulating lever and is arranged corresponding to the first electromagnet, and the control end of the second electromagnet is electrically connected with the CPU module.

Preferably, the distance between the supporting point and the first end of the insulating lever is greater than the distance between the supporting point and the second end of the insulating lever;

and a reset ring used for pulling down the ejector rod is arranged at the first end of the insulating connecting rod.

Compared with the prior art, the invention has the following advantages and beneficial effects:

the invention collects the working parameters and the environmental parameters of the power distribution equipment through the collection module, transmits the working parameters and the environmental parameters into the CPU module for judgment, and realizes the switching-off operation through the control switch module when the high-voltage drop switch needs to be switched off.

The brake separating device provided by the invention can be directly installed on the existing high-voltage drop switch, so that the installation cost is reduced, the transformation cost is lower, and the realization difficulty is low.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of a switching-off device of a high-voltage drop switch according to the invention.

Reference numerals: 1-a first conductive connecting plate, 2-a second conductive connecting plate, 3-an adjusting bolt, 4-an insulating ejector rod, 5-a bracket, 6-an insulating connecting rod, 7-a first hook, 8-a tension spring, 9-a second hook, 10-a first electromagnet and 11-a reset ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the invention.

It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

In the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The switching-off device of the high-voltage drop switch comprises a switch module, an acquisition module, a CPU module and a communication module.

The switch module is used for controlling the circuit disconnection of the brake separating device, is arranged in the high-voltage drop switch and controls the connectivity of the internal circuit of the high-voltage drop switch.

The acquisition module is used for the working parameters and the environmental parameters of the power distribution equipment, and transmitting the working parameters and the working environment of the high-voltage drop switch and the power distribution equipment corresponding to the high-voltage drop switch to the CPU module.

The CPU module is used for processing the data acquired by the acquisition module and controlling the switch module to work; the CPU module receives the data sent by the acquisition module, compares the data with a setting value in the CPU module, and when the acquired data exceeds the setting value, the CPU module sends a control signal to the switch module to control the switch module to execute the switching-off operation, so that the circuit of the high-voltage drop switch is disconnected, and the purpose of automatically monitoring the fire is realized.

The communication module is used for communicating with the power distribution main station; it has two kinds of functions, and one is that the working data and the environmental data with distribution equipment send to the distribution main website, monitors each distribution transformer through the distribution main website, when the conflagration appears, in time sends the conflagration signal to the distribution main website, and the staff of being convenient for carries out subsequent maintenance.

And a remote control action signal can be sent to the CPU through the power distribution master station, and the switch module is remotely controlled, so that the opening of the high-voltage drop switch is realized.

The collection module comprises a current collection module, a voltage collection module, a temperature collection module, an oil level collection module, a gas collection module, a smoke sensing module and a fire hazard module.

The current acquisition module is used for acquiring the zero sequence current of the high-voltage drop switch;

the voltage acquisition module is used for acquiring the zero sequence voltage of the high-voltage drop switch;

the temperature acquisition module is used for acquiring the temperature of the power distribution equipment;

the oil level acquisition module is used for acquiring the oil level of the distribution transformer;

the gas acquisition module is used for acquiring the gas state of the distribution transformer;

the smoke sensing module is used for acquiring the environmental smoke degree of the power distribution equipment;

the flame module is used for detecting whether the power distribution equipment and the environment are burnt or not;

the modules described above operate on the operating parameters and environmental parameters of the power distribution equipment, and the equipment used by each module may be selected empirically by those skilled in the art, for example: the current acquisition module adopts an ammeter, the voltage acquisition module adopts a voltmeter, and the temperature acquisition module adopts a temperature sensor and the like.

And other acquisition modules can be additionally arranged according to the monitoring requirement.

The signal output ends of the current acquisition module, the voltage acquisition module, the temperature acquisition module, the oil level acquisition module, the gas acquisition module, the smoke sensing module and the flame module are electrically connected with the signal input end of the CPU module.

Example two

When the CPU module determines that a fire or other fault affecting normal operation of the network at the transportation point occurs according to the acquisition module, the CPU module needs to control the switch module to operate, and this embodiment provides a switch module, which specifically includes a housing, a first conductive connecting plate 1 and a second conductive connecting plate 2.

The inside thing cavity of putting that is provided with of casing, its main function is to protect each part of separating brake device, including but not limited to dustproof, waterproof, fire prevention, protection against insects etc. and arrange CPU module, communication module, switch module etc. in the casing, the collection module needs install according to specific position of use, and whole placing in the casing is not necessary.

The first conductive connecting plate 1 is provided with a first end and a second end, namely a straight plate structure, and the first end of the first conductive connecting plate 1 is rotatably connected with the lower supporting seat of the high-voltage drop switch and is electrically connected with the high-voltage drop switch; as shown, the first conductive link plate 1 may be rotated counterclockwise along the left end (first end) thereof.

The second electrically conducts even board 2 and has first end and second end, can be for straight plate structure, and the second electrically conducts even first end of board 2 and high voltage drop switch's under bracing seat rotatable coupling, and is connected with the high voltage drop switch electricity, and as shown in the figure, the second electrically conducts even board 2 can follow its right-hand member (first end) clockwise rotation.

The second end of the first conductive connecting plate 1 is in contact with the second end of the second conductive connecting plate 2 and is conductive, and is communicated with the circuit circulation of the high-voltage drop switch, namely when the high-voltage drop switch is in the position as shown in the figure, the first conductive connecting plate 1 is in contact with the second conductive connecting plate 2, and both the first conductive connecting plate 1 and the second conductive connecting plate 2 are provided with conductive wires, so that the high-voltage drop switch can be normally communicated and can normally work.

The vertical setting of insulating ejector pin 4 is in the casing, and is located the below of the contact point of the electrically conductive even board of first electrically conductive even board 1 and the electrically conductive even board of second 2, when needs high-pressure drop switch normal work, and insulating ejector pin 4 is located the below, does not influence the electrically conductive contact between even board 1 of first electrically conductive even board and the electrically conductive even board of second 2 this moment.

When the high-voltage drop switch stops working, the insulating ejector rod 4 is controlled to move to the top, in the moving process, the first conductive connecting plate 1 rotates anticlockwise, the second conductive connecting plate 2 rotates clockwise, and finally the upper end of the insulating ejector rod 4 is arranged between the second end of the first conductive connecting plate 1 and the second end of the second conductive connecting plate 2, so that the first conductive connecting plate 1 and the second conductive connecting plate 2 are not connected any more, and the high-voltage drop switch is disconnected.

The driving assembly is fixedly arranged in the shell, is connected with the lower end of the insulating ejector rod 4 and drives the insulating ejector rod 4 to move up and down; the driving component is used for controlling the insulating ejector rod 4 to move upwards or downwards, and the driving component can be an electric telescopic rod, a pneumatic rod, an electric threaded lead screw component and the like.

EXAMPLE III

The switch module in this embodiment further comprises a bracket 5 and an adjusting screw 3.

The bracket 5 is fixedly connected with the lower supporting seat, a vertical guide hole is formed in the bracket, and the insulating ejector rod 4 is arranged in the guide hole and can slide up and down along the guide hole; can restrict the moving direction of insulating ejector pin 4 through setting up support 5, avoid its condition of rocking about appearing.

Adjusting screw 3 sets up in the below of the even board of first electrically conductive 1, and the upper end of adjusting screw 3 supports and leans on the even board of first electrically conductive 1, adjusting screw 3 and 5 threaded connection of support, through the height that sets up adjusting screw 3, can realize controlling the angle of even board 1 of first electrically conductive to can realize finely tuning the electrically conductive even board 1 of first electrically conductive and the electrically conductive even board 2 of second contact point (dead point) position, make it more be fit for the installation environment of multiple difference.

Example four

The untight condition of contact probably appears in first electrically conductive even board 1 and the electrically conductive even board 2 of second, consequently the contact failure probably appears, therefore is provided with magnetism between the second end of the electrically conductive even board 2 of second end and the electrically conductive even board 1 of first electrically conductive even board in this embodiment and inhales the subassembly, and magnetism is inhaled the subassembly and is included: permanent magnet blocks and magnet blocks.

The permanent magnet is fixedly connected with the second end of the first conductive connecting plate 1/the second conductive connecting plate 2; the ferromagnetic block is fixedly connected with the second end of the second conductive connecting plate 2/the first conductive connecting plate 1;

permanent magnetism piece and ferromagnetic block pass through magnetic force and adsorb to when the position as shown in the figure, first electrically conductive even board 1 can stably adsorb with electrically conductive even board 2 of second, avoids appearing contact failure's condition.

EXAMPLE five

The embodiment provides a specific structure of a driving assembly, which comprises an insulating connecting rod 6, a tension spring 8, a locking assembly and a supporting rotating shaft.

The insulating connecting rod 6 is provided with a first end and a second end, and the first end of the insulating connecting rod 6 is rotatably connected with the lower end of the insulating ejector rod 4;

the supporting rotating shaft is fixedly connected with the shell and arranged between the first end and the second end of the insulating connecting rod 6, and the insulating connecting rod 6 rotates around the supporting rotating shaft;

the insulating link 6 is rotatable by supporting the rotating shaft, so that when the first end of the insulating link 6 moves upwards, the second end of the insulating link 6 moves downwards, and a tension spring 8 is disposed at the second end of the insulating link 6 in the embodiment.

The upper end of the tension spring 8 is fixedly connected with the second end of the insulating connecting rod 6, the lower end of the tension dry spring is fixedly connected with the shell, and the tension spring 8 applies downward acting force to the second end of the insulating connecting rod 6; a downward acting force is applied to the second end of the insulating connecting rod 6 through the tension spring 8, and when the insulating ejector rod 4 needs to be controlled to move upwards, the second end of the insulating connecting rod 6 is pulled to move downwards through the tension spring 8, so that the function of moving upwards of the insulating ejector rod 4 can be realized.

The locking assembly is connected with the second end of the insulating connecting rod 6 and applies upward acting force to the second end of the insulating connecting rod 6; however, when the insulating ejector rod 4 does not need to move up, the second end of the insulating connecting rod 6 needs to be prevented from moving down, so that an upward acting force is applied to the insulating connecting rod 6 by arranging a locking component, and the upward acting force is offset with the elastic force of the tension spring 8, so that the purpose of stability can be achieved.

Thus, the latch assembly of the present embodiment includes an insulated lever, a support point, a first hook 7, a second hook 9, and a lifting assembly.

The insulating lever has a first end and a second end and is arranged above the insulating connecting rod 6;

the supporting point is fixedly connected with the shell and arranged between the first end and the second end of the insulating lever, and the insulating lever rotates around the supporting point;

the supporting point is fixedly connected with the shell and arranged between the first end and the second end of the insulating lever, and the insulating lever rotates around the supporting point;

the insulation lever is rotatable through the support point, so that when the first end of the insulation lever moves upwards, the second end of the insulation link 6 moves downwards, and a lifting assembly is arranged at the second end of the insulation link 6 in the embodiment.

The first hook 7 is fixedly connected with the second end of the insulating connecting rod 6;

the second hook 9 is fixedly connected with the first end of the insulating lever, and the first hook 7 is clamped with the second hook 9;

the first hook 7 is provided with a first vertical section facing the supporting rotating shaft, the second hook 9 is provided with a second vertical section facing the supporting point, and the first vertical section is attached to the second vertical section; the friction force between the first vertical section and the second vertical section is not less than the tension force of the tension spring 8;

the position fixing of the insulating connecting rod 6 and the insulating lever is realized by the friction force between the first hook 7 and the second hook 9.

In order to realize the separation of the first hook 7 and the second hook 9, a first vertical section is required to be tangent to a rotation circle of the second end of the insulating connecting rod 6, and a second vertical section is required to be tangent to a rotation circle of the first end of the insulating lever, so that when the insulating connecting rod 6 and the insulating lever rotate around the supporting rotating shaft and the supporting point, the separation can be normally performed.

Because the friction force is provided between the first hook 7 and the second hook 9, and the friction force is offset with the elastic force of the tension spring 8, in order to provide an acting force to make the sum of the tension spring 8 and the tension spring greater than the friction force when the high-voltage drop switch is required to be opened, the embodiment is realized by the lifting assembly.

The lifting component is connected with the second end of the insulating lever and controls the second end of the insulating lever to move up and down.

EXAMPLE six

The embodiment provides a lifting assembly, which comprises a first electromagnet 10, wherein the first electromagnet 10 is fixedly arranged below a second end of an insulating lever, and a control end of the first electromagnet 10 is electrically connected with a CPU (central processing unit) module;

the second end of the insulating lever is provided with a metal block which is magnetically attracted to the first electromagnet 10.

When the second end of the insulating lever needs to be controlled to move downwards, the CPU module controls the power supply to the first electromagnet 10, so that the first electromagnet has magnetic force, the second end of the insulating lever is adsorbed by the magnetic force, the first end of the insulating lever moves upwards, the first hook 7 is separated from the second hook 9, the tension spring 8 is shortened, the second end of the insulating connecting rod 6 is pulled by the tension spring 8 to move downwards, the first end of the insulating connecting rod 6 finally moves upwards and ejects the insulating ejector rod 4, and the first conductive connecting plate 1 and the second conductive connecting plate 2 are controlled to separate.

Further, in order to further increase the adsorption performance, the lifting assembly further comprises a second electromagnet which is fixedly arranged at the second end of the insulating lever and is arranged corresponding to the first electromagnet 10, and the control end of the second electromagnet is electrically connected with the CPU module.

Through the combination of the first electromagnet 10 and the second electromagnet, when the adsorption is needed, the magnetic poles of the control contact surfaces are opposite, and the adsorption performance of the insulating lever is improved.

EXAMPLE seven

After the primary switching-off operation is executed, resetting is needed, so that in the embodiment, the distance between the supporting point and the first end of the insulating lever is greater than the distance between the supporting point and the second end of the insulating lever;

the gravity of the first end of the insulating lever is larger than the weight of the second end of the insulating lever, the insulating lever can be reset under the action of the gravity, the polarities of the first electromagnet 10 and the second electromagnet can be controlled to be the same, and the first electromagnet and the second electromagnet can be further reset quickly.

The first end of insulating connecting rod 6 is provided with the reset ring 11 that is used for the drop-down ejector pin, through setting up reset ring 11, realizes drop-down insulating connecting rod 6, elongates tension spring 8 to first couple 7 and the 9 blocks of second couple have realized the operation that resets.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of description and are not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other variations or modifications may be made on the above invention and still be within the scope of the invention.