High-speed grounding device of low-voltage shunt switch and power switch equipment

Abstract

The invention discloses a high-speed grounding device for a low-voltage shunt switch and power switch equipment, and belongs to the technical field of grounding. The device comprises a fixed quick connector used for being connected with a shunt switch, one end of the fixed quick connector is provided with a circle of first enclosure wall used for forming a first mounting opening, and the first enclosure wall is provided with a fixed clamping part; one end of the operating rod is provided with a circle of second enclosing wall used for forming a second mounting opening, and the second enclosing wall is provided with an operating clamping part; the movable quick plug is used for being connected with a grounding wire and is provided with a first end and a second end; the first end head is provided with a first clamping part, and when the first end head is inserted, the first end head is clamped in the first mounting opening through the running fit of the first clamping part and the fixed clamping part; the second end head is provided with a second clamping part, and when the second end head is inserted, the second end head is clamped in the second mounting opening through the running fit of the second clamping part and the operation clamping part. The device is convenient to operate, high in reliability and small in power failure range.

Description

Technical Field

[0001] The present invention relates to the field of grounding technology, and in particular to a low-voltage branch switch quick grounding device and a power switch device. Background Art

[0002] In the power system, the low-voltage grounding wire refers to a grounding device composed of an insulating operating rod, a grounding clamp, a power clamp, a wiring nose, a grounding soft copper wire, etc. When the low-voltage line is shut down for maintenance and the grounding wire needs to be hung, the operator holds the insulating operating rod, inserts the power clamp into the grounding point of the copper busbar of the low-voltage distribution cabinet, and then tightens the fixing bolts. At the same time, the power clamp is connected to the grounding copper wire, and the grounding wire is directly grounded through the grounding clamp to discharge the low-voltage line. The grounding device is an indispensable tool to ensure the personal safety of the staff when voltage unexpectedly appears on the power-off equipment and lines.

[0003] The installation and removal process of traditional grounding devices seems simple, but in actual application, there are still problems with inconvenient grounding operations, which are mainly reflected in the following difficulties: First, the conductor part of the grounding device on the market is usually about 3.5 cm, but because the distance between the branch switches of the low-voltage distribution cabinet is close, the distance between the power-off branch switch and the energized branch switch is only about 5 cm. During the grounding installation operation, it is necessary to hold the operating lever and twist the grounding clamp in a small space, which is easy to accidentally touch the energized branch and cause the switch to trip; second, the traditional grounding wire operating lever is connected to the grounding copper wire, and the grounding device is large in size, heavy to carry and inconvenient to operate; third, to ensure safe operation, the current measure is to cut off the power and ground at the low-voltage main switch with a larger space, which expands the power outage range by 2-3 times and affects the reliability level. Summary of the invention

[0004] The invention provides a low-voltage branch switch quick grounding device and a power switch device, aiming to solve the problems of inconvenient grounding operation and low reliability in the prior art.

[0005] A first aspect of the present invention provides a low-voltage branch switch quick grounding device, comprising:

[0006] A fixed quick connector for connecting to the branch switch, wherein one end of the fixed quick connector is provided with a first surrounding wall for forming a first installation opening, and a fixed clamping portion is provided on the first surrounding wall;

[0007] An operating rod, wherein the end of the operating rod is provided with a circle of second surrounding walls for forming a second installation opening, and the second surrounding walls are provided with an operating engaging portion;

[0008] An active quick plug for connecting to a ground wire, the active quick plug comprising a first end for inserting into the first mounting port and a second end for inserting into the second mounting port; the first end is provided with a first clamping portion, and when the first end is inserted, the first end is clamped into the first mounting port through the rotational cooperation between the first clamping portion and the fixed clamping portion; the second end is provided with a second clamping portion, and when the second end is inserted, the second end is clamped into the second mounting port through the rotational cooperation between the second clamping portion and the operating clamping portion.

[0009] In some embodiments of the first aspect, the fixed engaging portion is a first curved groove, the first curved groove passes through opposite sides of the wall body of the first enclosing wall, and one end of the first curved groove passes through an outer end surface of the first enclosing wall;

[0010] The first engaging portion is a first matching pin, which is fixed to the outer wall of the first end head. The first matching pin can be moved into the first curved groove and be connected to the first curved groove.

[0011] In some embodiments of the first aspect, the operation engaging portion is a second curved groove, the second curved groove passes through opposite sides of the wall body of the second enclosing wall, and one end of the second curved groove passes through an outer end surface of the second enclosing wall;

[0012] The second engaging portion is a second matching pin, which is fixed to the outer wall of the second end head. The second matching pin can be moved into the second curved groove and be connected to the second curved groove.

[0013] In some embodiments of the first aspect, the first curved groove and the second curved groove are arranged in a mirror image.

[0014] In some embodiments of the first aspect, the first curved groove and the second curved groove are both concave grooves;

[0015] The concave groove includes an entry section, a connecting section and a locking section; one end of the entry section is open, and the other end of the entry section is connected to the connecting section; one end of the locking section is closed, and the other end of the locking section is connected to the connecting section.

[0016] In some embodiments of the first aspect, the number of the fixed clamping parts and the number of the first clamping parts are both at least two, a plurality of the fixed clamping parts are circumferentially arranged on the inner side wall of the first enclosing wall, and a plurality of the first clamping parts are circumferentially arranged on the outer side wall of the first end head;

[0017] The number of the operating engaging parts and the number of the second engaging parts are both at least two, a plurality of the operating engaging parts are circumferentially arranged on the inner side wall of the second enclosing wall, and a plurality of the second engaging parts are circumferentially arranged on the outer side wall of the second end head.

[0018] In some embodiments of the first aspect, a receiving cavity is formed inside the fixed quick connector, and the receiving cavity is communicated with the first installation opening;

[0019] A return spring is provided in the accommodating cavity. The return spring is arranged along the length direction of the accommodating cavity. One end of the return spring abuts against the inner wall of the accommodating cavity, and the other end of the return spring is used to abut against the first end. The return spring is used to keep the first end in a tendency to move away from the accommodating cavity.

[0020] In some embodiments of the first aspect, a pressing piston is further provided in the accommodating chamber;

[0021] The accommodating cavity comprises a first cavity and a second cavity, wherein the diameter of the first cavity is smaller than that of the second cavity to form a step;

[0022] The pressing piston comprises a pressing rod and a pressing head, the pressing rod is connected and fixed to the pressing head, and the circumference of the pressing head is greater than the diameter of the first cavity;

[0023] The pressing rod is arranged in the first cavity, the pressing head is arranged in the second cavity, and the return spring is compressed between the step and the pressing head.

[0024] In some embodiments of the first aspect, the movable quick plug includes a grounding wire ear, the first terminal and the second terminal;

[0025] An insertion hole is provided at one end of the first end head, and an insertion column is provided at one end of the second end head;

[0026] The connection between the first end and the second end is configured as a plug-in connection between the insertion column and the insertion hole;

[0027] The ground wire ear is clamped between the first end and the second end.

[0028] A second aspect of the present invention provides a power switch device, comprising:

[0029] The low-voltage branch switch quick grounding device according to the first aspect;

[0030] A low-voltage shunt switch, wherein the low-voltage shunt switch quick grounding device is detachably connected to the connecting copper bus of the low-voltage shunt switch.

[0031] It can be seen from the above technical solutions that the present invention has the following advantages:

[0032] The present embodiment provides a low-voltage branch switch quick grounding device. First, since the fixed quick connector replaces the original copper bar, and the fixed quick connector and the movable quick plug can be quickly connected by rotating and matching the first clamping part with the fixed clamping part, and the operating rod and the movable quick plug can be quickly connected by rotating and matching the second clamping part with the operating clamping part, in actual operation, only one operating rod is needed to quickly install and remove the three grounding conductors, which shortens the operation time and greatly improves the portability and operation convenience; secondly, since the movable quick plug and the fixed quick connector are connected by rotating installation and clamping fixation, The fixed quick connector and the operating rod can be quickly aligned and installed to complete the grounding operation. There is no need to twist and install between low-voltage branches with small intervals like traditional wiring clamps. The entire grounding operation is simple, which is conducive to more rational use of the movable space between low-voltage branch switches to adapt to the layout and spacing requirements of different low-voltage distribution cabinets, thereby reducing the risk of accidental touch and contact, thereby realizing the maintenance of the outgoing line of a directional single branch switch, effectively reducing the scope of power outages, improving the power supply reliability of low-voltage users, and greatly improving the reliability of grounding operations. It effectively solves the problems of inconvenient grounding operations and low reliability in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 A schematic perspective view of the overall structure of a low-voltage branch switch quick grounding device provided by an embodiment of the present invention;

[0035] Figure 2 A schematic cross-sectional view of the overall structure of a low-voltage branch switch quick grounding device provided by an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of the overall structure of a power switch device provided by an embodiment of the present invention;

[0037] Figure 4 A schematic cross-sectional view of the overall structure of a power switch device provided in an embodiment of the present invention.

[0038] Reference numerals:

[0039] 1. Fixed quick connector; 10. First enclosure wall; 11. First curved groove; 12. Accommodating chamber; 13. Return spring; 14. Pressing piston; 15. Step; 16. Screw; 17. Nut;

[0040] 2. Operating lever; 20. Second enclosure wall; 21. Second curved groove; 22. Electrical detection alarm device;

[0041] 3. Movable quick plug; 30. Grounding wire ear; 31. First terminal; 310. First matching pin; 311. Insertion hole; 32. Second terminal; 320. Second matching pin; 321. Insertion column;

[0042] a. Low-voltage branch switch quick grounding device; b. Low-voltage branch switch. DETAILED DESCRIPTION

[0043] The embodiment of the present invention provides a low-voltage branch switch quick grounding device and a power switch device, which are used to solve the technical problems of inconvenient grounding operation and low reliability in the prior art.

[0044] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, 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 embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1 to Figure 2 The present invention provides a low-voltage branch switch quick grounding device, comprising:

[0046] A fixed quick connector 1 for connecting to a branch switch, one end of which is provided with a first surrounding wall 10 for forming a first installation opening, and a fixed clamping portion is provided on the first surrounding wall 10;

[0047] An operating rod 2, the end of which is provided with a second enclosure wall 20 for forming a second mounting opening, and an operating engaging portion is provided on the second enclosure wall 20;

[0048] The movable quick plug 3 is used to connect to the grounding wire, and the movable quick plug 3 has a first end 310 for being inserted into the first installation port and a second end 320 for being inserted into the second installation port; the first end 310 is provided with a first clamping portion, and when the first end 310 is inserted, the first end 310 is clamped in the first installation port through the rotational cooperation of the first clamping portion and the fixed clamping portion; the second end 320 is provided with a second clamping portion, and when the second end 320 is inserted, the second end 320 is clamped in the second installation port through the rotational cooperation of the second clamping portion and the operating clamping portion.

[0049] During the working process of this embodiment, the user inserts the second end 320 of the movable quick plug 3 into the second mounting opening of the operating rod 2 and rotates and snaps it to achieve a detachable quick connection between the movable quick plug 3 and the operating rod 2; then, the fixed quick connector 1 is installed and fixed at the copper busbar of the low-voltage branch switch; subsequently, the first end 310 of the movable quick plug 3 is inserted into the first mounting opening of the fixed quick connector 1 and rotates and snaps it to achieve a detachable quick connection between the movable quick plug 3 and the fixed quick connector 1, and the fixed quick connector 1, the movable quick plug 3 and the operating rod 2 are coaxially arranged; finally, the movable quick plug 3 is connected to the grounding wire, so that the grounding wire is connected to the copper busbar of the low-voltage branch switch to achieve a grounding operation.

[0050] It can be seen from the above working process that after the user rotates and clamps the movable quick plug 3 and the operating rod 2, he only needs to hold the operating rod 2 to rotate and clamp the movable quick plug 3 to the fixed quick connector 1, and the fixed quick connector 1, the movable quick plug 3 and the operating rod 2 are quickly assembled. The whole grounding operation process is very quick and simple.

[0051] Compared with the prior art, the advantages of this embodiment are: first, the grounding operation is convenient. This solution adopts a split design. In actual operation, only one operating rod 2 needs to be carried to achieve quick assembly and disassembly. Compared with the traditional integrated grounding device, there is no need to use an integrated device for operation in a small space, which shortens the operation time and reduces the difficulty of operation. Second, the grounding operation is highly reliable. In actual operation, the fixed quick connector 1 can be installed and fixed on the copper busbar of the low-voltage branch switch in advance, and then the movable quick plug 3 with the grounding wire can be rotated and connected to the fixed quick connector 1 by using the operating rod 2 to complete the grounding operation. There is no need to twist and install between low-voltage branches with too small intervals like traditional wiring clamps, which reduces the risk of accidental touch and contact, thereby realizing the inspection and maintenance of the outgoing line of a directional single branch switch, effectively The scope of power outages has been reduced and the reliability of power supply to low-voltage users has been improved. Third, the connection is stable. This solution uses a rotating snap-in method to achieve a fast and stable connection between the fixed quick connector 1, the movable quick plug 3 and the operating rod 2. Once the rotating snap is fixed in place, its connection state is relatively stable, and a specific rotation action is required to complete the connection or disassembly. This operating feature can prevent misoperation to a certain extent. Compared with the retractable movable snap, the retractable movable snap is prone to loose grounding connection or poor contact due to telescopic changes, but the rotating snap is not easy to open due to looseness of the telescopic parts or misoperation. The connection state will only change when the rotation operation is consciously performed, thereby providing a certain safety guarantee for the grounding operation and reducing the risk of poor grounding or disconnection due to misoperation.

[0052] In a specific embodiment, Figure 1 and Figure 2As shown, a realizable connection structure of the fixed quick connector 1 and the movable quick connector 3 is further provided, the fixed engaging portion on the fixed quick connector 1 is a first curved groove 11, the first curved groove 11 passes through the opposite sides of the wall body of the first enclosure wall 10, that is, the first curved groove 11 passes through from the inner wall surface of the first enclosure wall 10 to the outer wall surface of the first enclosure wall 10, and one end of the first curved groove 11 passes through the outer end surface of the first enclosure wall 10; the first engaging portion on the first end head 310 is a first mating pin 310, and the first mating pin 31 0 is fixed to the outer wall of the first end 310, the first matching pin 310 can be moved into the first curved groove 11 and snapped into the first curved groove 11. In specific implementation, the first end 310 of the movable quick plug 3 is inserted into the first installation opening, and then the first matching pin 310 is moved into the first curved groove 11. The first end 310 rotates in the first installation opening, so that the first matching pin 310 can be moved into the depth of the first curved groove 11, so that the first end 310 of the movable quick plug 3 is snap-fastened and fixed in the first curved groove 11.

[0053] In one embodiment, if Figure 1 As shown, the first curved groove 11 is a concave groove; the concave groove includes an entry section, a connecting section and a locking section; the other end of the entry section is connected to the connecting section; one end of the locking section is closed, and the other end of the locking section is connected to the connecting section, that is, the entry section, the connecting section and the locking section are connected to form a "concave" structure, one end of the entry section is open, and a limiting bar is provided on the connecting section. The limiting bar reduces the diameter of the connecting section, so that the space of the locking section becomes larger, and the matching pin is difficult to disengage after entering the locking section, thereby achieving locking. In specific implementation, the first matching pin 310 enters the first curved groove 11 through the open entry section, and is fixed in the closed end of the locking section.

[0054] The joint between the opening of the concave groove and the first enclosure wall 10 and the joint between the concave groove and the limiting fence are rounded and polished.

[0055] In another specific embodiment, another achievable connection structure between the fixed quick connector 1 and the movable quick plug 3 is further provided, the fixed clamping portion on the fixed quick connector 1 is a first thread, and the first clamping portion on the first end 310 is a second thread. In specific implementation, the fixed quick connector 1 and the movable quick plug 3 are fixed by threaded connection.

[0056] In a specific embodiment, Figure 1 and Figure 2As shown, a realizable connection structure between the operating rod 2 and the movable quick plug 3 is further provided, the operating engaging portion on the operating rod 2 is a second curved groove 21, the second curved groove 21 penetrates the opposite sides of the wall body of the second enclosure wall 20, that is, the second curved groove 21 penetrates from the inner wall surface of the second enclosure wall 20 to the outer wall surface of the second enclosure wall 20, and one end of the second curved groove 21 penetrates the outer end surface of the second enclosure wall 20; the second engaging portion is a second matching pin 320, the second matching pin 320 is fixedly connected to the outer wall of the second end head 320, the second matching pin 320 can be moved into the second curved groove 21 and clamped in the second curved groove 21, in specific implementation, the second end head 320 of the movable quick plug 3 is inserted into the second installation opening, and then the second matching pin 320 is moved into the second curved groove 21, and the rotation of the second end head 320 in the second installation opening can make the second matching pin 320 move into the depth of the second curved groove 21, so that the second end head 320 of the movable quick plug 3 is buckled and fixed in the second curved groove 21.

[0057] It should be pointed out that after the grounding is completed, the operating rod 2 can be separated from the movable quick plug 3, and only the movable quick plug 3 connected to the grounding wire needs to be left on site, which reduces the weight of the device, makes the grounding wire more firmly installed, and reduces the risk of the grounding wire falling off.

[0058] In one embodiment, if Figure 1 As shown, the second curved groove 21 is a concave groove; the concave groove includes an entry section, a connecting section and a locking section; one end of the entry section is open, and the other end of the entry section is connected to the connecting section; one end of the locking section is closed, and the other end of the locking section is connected to the connecting section, that is, the entry section, the connecting section and the locking section are connected to form a "concave" structure, and a limiting bar is provided on the connecting section. The limiting bar reduces the diameter of the connecting section, thereby increasing the space of the locking section, and it is difficult for the matching pin to disengage after entering the locking section, thereby achieving locking. In specific implementation, the second matching pin 320 enters the second curved groove 21 through the open entry section and is fixed in the locking section.

[0059] In another specific embodiment, another realizable connection structure between the operating rod 2 and the movable quick plug 3 is further provided, the operating engaging portion on the operating rod 2 is a first thread, and the second engaging portion on the second end 320 is a fourth thread. In specific implementation, the operating rod 2 and the movable quick plug 3 are fixed by threaded connection.

[0060] Based on the above embodiments, in order to improve the convenience of the connection process, as Figure 1As shown, the first curved groove 11 and the second curved groove 21 are arranged in a mirror image. For example, the bending direction of the first curved groove 11 is clockwise, and the bending direction of the second curved groove 21 is counterclockwise. In specific implementation, after the second end 320 is rotated and connected to the second mounting port, assuming that the user rotates the operating rod 2 in a counterclockwise direction, the operating rod 2 drives the movable quick plug 3 to rotate counterclockwise, and the first mating pin 310 of the first end 310 on the movable quick plug 3 will also rotate counterclockwise, so that the first mating pin 310 is rotated counterclockwise and inserted into the first curved groove 11.

[0061] Based on the above embodiments, for the sake of connection stability, such as Figure 1 As shown, the number of the fixed clamping parts and the first clamping parts are both at least two, and the multiple fixed clamping parts are circumferentially arranged on the outer wall of the first enclosure wall 10, and the multiple first clamping parts are circumferentially arranged on the outer wall of the first end head 310; the number of the operating clamping parts and the second clamping parts are both at least two, and the multiple operating clamping parts are circumferentially arranged on the outer wall of the second enclosure wall 20, and the multiple second clamping parts are circumferentially arranged on the outer wall of the second end head 320. In specific implementation, the setting of the multiple clamping parts provides multiple connection points for the fixed quick connector 1 and the movable quick plug 3, and the operating rod 2 and the movable quick plug 3, and the connection stability is higher.

[0062] In a specific embodiment, Figure 1 and Figure 2 As shown, a feasible structure of a fixed quick connector 1 is further provided. A screw 16 and a nut 17 are fixedly connected to the other end of the fixed quick connector 1. The screw 16 is used to penetrate into the shunt switch, and the nut 17 screws the shunt switch to the screw 16. In specific implementation, the fixed quick connector 1 can be screwed and fixed to the shunt switch in advance. During subsequent maintenance, the user only needs to carry the movable quick plug 3 and the operating rod 2 to complete the grounding operation. Compared with the traditional grounding device in which the clamp of the conductor part cannot be completely fitted with the hanging point, the fixed quick connector 1 of this embodiment can be firmly fixed to avoid the risk of falling off after the grounding is completed.

[0063] Based on the above embodiments, Figure 2As shown, in one embodiment, in order to improve the connection stability between the movable quick plug 3 and the fixed quick connector 1, a receiving chamber 12 is formed inside the fixed quick connector 1, and the receiving chamber 12 is connected with the first installation port; a return spring 13 is arranged in the receiving chamber 12, and the return spring 13 is arranged along the length direction of the receiving chamber 12, and one end of the return spring 13 abuts against the inner wall of the receiving chamber 12, and the return spring 13 is used to keep the first end 310 moving away from the receiving chamber 12. In specific implementation, when the first end 310 of the movable quick plug 3 is inserted into the first installation port, the first end 310 will compress the return spring 1 3. The presence of the reset spring 13 provides a damping feeling for installation and a better operating feel. When the first end 310 is completely snapped into the first installation opening, the reset spring 13 will squeeze the first end 310, so that the first matching pin 310 of the first end 310 squeezes the first curved groove 11, thereby improving the connection stability between the movable quick plug 3 and the fixed quick connector, avoiding the loose connection at the snap-on connection as in some telescopic snap-on structures. The loose connection will slow down the response speed of the grounding system and fail to discharge the current energy in time, which may cause damage to the electrical equipment due to overvoltage or overheating, or even cause serious accidents such as fire.

[0064] In this embodiment, if Figure 2 As shown, in order to further improve the connection stability between the movable quick plug 3 and the fixed quick connector 1, a pressing piston 14 is also provided in the accommodating chamber 12; the accommodating chamber 12 includes a first cavity and a second cavity, the diameter of the first cavity is smaller than that of the second cavity to form a step 15; the pressing piston 14 includes a pressing rod and a pressing head, the pressing rod is connected and fixed to the pressing head, and the circumference of the pressing head is larger than the diameter of the first cavity; the pressing rod is arranged in the first cavity, the pressing head is arranged in the second cavity, and the reset spring 13 is compressed between the step 15 and the pressing head. In specific implementation, the setting of the pressing piston 14 can control the moving stroke of the reset spring 13 and the first end 310, that is, the maximum moving stroke of the first end 310 is the distance from the pressing head of the pressing piston 14 to the step 15, avoiding the problem of excessive insertion of the first end 310 or excessive deformation of the reset spring 13.

[0065] In a specific embodiment, Figure 1 and Figure 2As shown, an achievable structure of an active quick plug 3 is further provided, wherein the active quick plug 3 comprises a grounding wire ear 30, a first terminal 31 and a second terminal 32; an insertion hole 311 is provided at one end of the first terminal 31; an insertion column 321 is provided at one end of the second terminal 32; the first terminal 31 and the second terminal 32 are both cylindrical, and the connection between the first terminal 31 and the second terminal 32 is configured as a plug-in connection between the insertion column 321 and the insertion hole 311; the grounding wire ear 30 is clamped between the first terminal 31 and the second terminal 32, a grounding wire is mounted on the grounding wire ear 30, and the lower end of the grounding wire is mounted on the low-voltage grounding terminal through a grounding clamp. In specific implementation, the first terminal 31 and the second terminal 32 are detachably connected. When a grounding operation is required, the first terminal 31, the second terminal 32 and the grounding wire ear 30 can be assembled, and then the active quick plug 3 is connected to the operating rod 2 or the fixed quick connector 1, and the operation flexibility is high.

[0066] In a specific embodiment, an achievable structure of an operating rod 2 is further provided. The operating rod 2 is provided with an insulating handle, which is arranged at the end of the operating rod 2. During specific implementation, the user can complete the grounding operation by holding the insulating handle, which is highly safe.

[0067] In one embodiment, if Figure 1 As shown, the operating rod 2 is provided with an electrical test alarm device 22, which is connected to the operating rod 2 by a plurality of screws. In specific implementation, if the target switch for maintenance is energized, a buzzer sound will be emitted when the head of the operating rod 2 is close to the switch to remind the operator. The operating rod 2 can be used directly to test the electricity before grounding. While ensuring the safety of the operators, it shortens the operation time and saves the equipment cost of the low-voltage electrical tester.

[0068] See also Figure 3 and Figure 4 The present invention provides a power switch device, comprising:

[0069] The low voltage branch switch quick grounding device a of the above embodiment;

[0070] A low-voltage branch switch b is provided with a low-voltage branch switch quick grounding device a detachably connected to the connecting copper bus of the low-voltage branch switch b.

[0071] In the working process of this embodiment, in the first step, the fixed quick connector 1 is connected to the copper busbar of the low-voltage branch switch through bolts. When the user needs to install the grounding wire of the low-voltage branch switch, the operator can first use the operating rod 2 with a built-in electric detection alarm device 22 as an electric detector to detect electricity to confirm that the maintenance equipment is not energized; in the second step, the grounding wire is installed through the grounding wire ear 30 on the movable quick plug 3, and the operator aligns and rotates the movable quick plug 3 to be connected to the operating rod 2; in the third step, the operator holds the handle of the operating rod 2, drives the movable quick plug 3 to rotate by rotating the operating rod 2, aligns and rotates the movable quick plug 3 to be connected to the fixed quick connector 1, and at this time, under the action of the reset spring 13, the first matching pin 310 will be tightly against the first curved groove 11, so as to realize the rapid installation of the maintenance equipment and the grounding wire; in the fourth step, after the grounding is completed, the operating rod 2 and the movable quick plug 3 can be quickly separated by rotating the operating rod 2, so that the weight of the grounding wire is reduced, and the whole process of hanging the grounding wire is more time-saving, labor-saving, economical and safe.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0073] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A low voltage branch switch quick grounding device, characterized in that: include: A fixed quick connector for connecting to the branch switch, wherein one end of the fixed quick connector is provided with a first surrounding wall for forming a first installation opening, and a fixed clamping portion is provided on the first surrounding wall; An operating rod, one end of which is provided with a circle of second surrounding wall for forming a second installation opening, and the second surrounding wall is provided with an operating engaging portion; An active quick plug for connecting to a ground wire, the active quick plug comprising a first end for inserting into the first mounting port and a second end for inserting into the second mounting port; the first end is provided with a first clamping portion, and when the first end is inserted, the first end is clamped into the first mounting port through the rotational cooperation between the first clamping portion and the fixed clamping portion; the second end is provided with a second clamping portion, and when the second end is inserted, the second end is clamped into the second mounting port through the rotational cooperation between the second clamping portion and the operating clamping portion.

2. The low-voltage branch switch quick grounding device according to claim 1 is characterized in that: The fixed engaging portion is a first curved groove, the first curved groove passes through two opposite sides of the wall body of the first enclosing wall, and one end of the first curved groove passes through the outer end surface of the first enclosing wall; The first engaging portion is a first matching pin, which is fixed to the outer wall of the first end head. The first matching pin can be moved into the first curved groove and be connected to the first curved groove.

3. The low-voltage branch switch quick grounding device according to claim 2 is characterized in that: The operation engaging portion is a second curved groove, the second curved groove passes through two opposite sides of the wall body of the second enclosing wall, and one end of the second curved groove passes through the outer end surface of the second enclosing wall; The second engaging portion is a second matching pin, which is fixed to the outer wall of the second end head. The second matching pin can be moved into the second curved groove and be connected to the second curved groove.

4. The low-voltage branch switch quick grounding device according to claim 3, characterized in that: The first curved groove and the second curved groove are arranged in a mirror image.

5. The low-voltage branch switch quick grounding device according to claim 3, characterized in that: The first curved groove and the second curved groove are both concave grooves; The concave groove includes an entry section, a connecting section and a locking section; one end of the entry section is open, and the other end of the entry section is connected to the connecting section; one end of the locking section is closed, and the other end of the locking section is connected to the connecting section.

6. The low-voltage branch switch quick grounding device according to claim 1, characterized in that: The number of the fixed clamping parts and the number of the first clamping parts are both at least two, a plurality of the fixed clamping parts are circumferentially arranged on the inner side wall of the first enclosure wall, and a plurality of the first clamping parts are circumferentially arranged on the outer side wall of the first end head; The number of the operating engaging parts and the number of the second engaging parts are both at least two, a plurality of the operating engaging parts are circumferentially arranged on the inner side wall of the second enclosing wall, and a plurality of the second engaging parts are circumferentially arranged on the outer side wall of the second end head.

7. The low-voltage branch switch quick grounding device according to claim 1, characterized in that: The fixed quick connector has an accommodating cavity formed inside, and the accommodating cavity is communicated with the first installation opening; A return spring is provided in the accommodating cavity. The return spring is arranged along the length direction of the accommodating cavity. One end of the return spring abuts against the inner wall of the accommodating cavity. The return spring is used to keep the first end head moving away from the accommodating cavity.

8. The low-voltage branch switch quick grounding device according to claim 7, characterized in that: A pressing piston is also provided in the accommodating chamber; The accommodating cavity comprises a first cavity and a second cavity, wherein the diameter of the first cavity is smaller than that of the second cavity to form a step; The pressing piston includes a pressing rod and a pressing head, the pressing rod is fixedly connected to the pressing head, and the circumference of the pressing head is larger than the diameter of the first cavity; the pressing rod is arranged in the first cavity, the pressing head is arranged in the second cavity, and the return spring is compressed between the step and the pressing head.

9. The low-voltage branch switch quick grounding device according to claim 1, characterized in that: The movable quick plug includes a grounding wire ear for connecting to a grounding wire, the first terminal and the second terminal; An insertion hole is provided at one end of the first end head, and an insertion column is provided at one end of the second end head; The connection between the first end and the second end is configured as a plug-in connection between the insertion column and the insertion hole; The ground wire ear is clamped between the first end and the second end.

10. A power switch device, characterized in that: include: The low-voltage branch switch quick grounding device according to any one of claims 1 to 9; A low-voltage shunt switch, wherein the low-voltage shunt switch quick grounding device is detachably connected to the connecting copper bus of the low-voltage shunt switch.

Images