Low voltage disconnect switch operating arm

Abstract

The present invention relates to the field of electric power operation and maintenance technology, and discloses an operating arm for a low-voltage disconnect switch. The operating arm for the low-voltage disconnect switch includes a multifunctional operating head and a handle, wherein the multifunctional operating head includes an outer cylinder, one end of which is an open end; zero or more telescopic parts are provided in the outer cylinder, and the telescopic parts can be telescoped along the axial direction of the outer cylinder; an elastic part is provided between the telescopic part and the outer cylinder, and the elastic part can push the telescopic part to move toward the open end of the outer cylinder; the handle is fixed to the opposite end of the open end of the outer cylinder. The operating arm for the low-voltage disconnect switch provided by the present invention can engage the rotating operating button of the air switch through the multifunctional operating head, and then extend the force arm of the rotating operating button through the handle, thereby reducing the force required to open and close the air switch; at the same time, it can extend the distance between the operator and the transformer box, thereby improving the safety of the operator when opening and closing the air switch; and improve the operational discomfort caused by the switch position being too high or too low.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power operation and maintenance, and in particular to an operating arm of a low-voltage isolating switch. Background Art

[0002] Integrated box-type transformers are currently widely used, and their low-voltage compartment disconnectors and circuit breakers are easier to operate. However, in practice, the following issues exist: First, the springs within the circuit breakers are strong, requiring a significant amount of force to open and close them. For example, a low-voltage branch switch with a rated current of 400A requires a force exceeding 200N to open and close the circuit breaker, placing certain demands on the operator. Second, when opening and closing the circuit breaker, the operator is too close to the transformer housing. If an internal fault occurs within the housing, the operator bears the brunt of the impact, making it difficult to avoid the dangers of arcing and explosions caused by short circuits. Summary of the Invention

[0003] The object of the present invention is to provide a low-voltage isolating switch operating arm to reduce the switching difficulty of the air switch and improve the safety of the air switch.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] Low voltage disconnect switch operating arm, including:

[0006] A multifunctional operating head, comprising an outer cylinder, one end of which is an open end; one or more telescopic members are disposed within the outer cylinder, the telescopic members being capable of telescoping along the axial direction of the outer cylinder; an elastic member is disposed between the telescopic member and the outer cylinder, the elastic member being capable of pushing the telescopic member toward the open end of the outer cylinder;

[0007] A handle is fixed to the end opposite to the open end of the outer tube.

[0008] As an optional solution for the operating arm of a low-voltage disconnect switch, notches are provided at the bottom ends of both sides of the outer cylinder; the height of the notches is smaller than the length of the telescopic member.

[0009] As an optional solution for the low-voltage disconnect switch operating arm, there are multiple telescopic parts.

[0010] As an optional solution for the operating arm of a low-voltage disconnect switch, the telescopic member is a pressing piece; a plurality of the pressing pieces are stacked and adjacent pressing pieces are slidably connected.

[0011] As an optional solution for the operating arm of a low-voltage disconnector, the outer wall of the bottom end of the pressing piece is covered with a glue layer; the thickness of the glue layer is not higher than the outer plane of the pressing piece.

[0012] As an optional solution for the low-voltage disconnect switch operating arm, the elastic member is a spring.

[0013] As an optional solution for a low-voltage isolating switch operating arm, the low-voltage isolating switch operating arm also includes a sliding rod and a support plate, the sliding rod is inserted into the spring, the support plate is fixed in the outer cylinder, and a plurality of through holes corresponding to the position of the sliding rod are provided on the support plate, the sliding rod is inserted into the through hole and slides along the axial direction of the through hole.

[0014] As an optional solution for the operating arm of a low-voltage disconnect switch, a limiting column is provided at the end of the sliding rod, the diameter of the limiting column is larger than the diameter of the through hole, and the limiting column can limit the moving distance of the telescopic part by abutting against the support plate.

[0015] As an optional solution for the operating arm of a low-voltage disconnect switch, the handle includes a plurality of sections of insulating rods, and two adjacent sections of the insulating rods can be connected and fixed by a coupling.

[0016] As an optional solution of the low-voltage disconnect switch operating arm, the low-voltage disconnect switch operating arm further includes a J-shaped operating head, and the J-shaped operating head includes a hook portion and a support rod at its free end;

[0017] The support rod is inclined toward the end where the hook portion is located;

[0018] The J-shaped operating head is located at the end of the handle away from the multifunctional operating head.

[0019] Beneficial effects of the present invention:

[0020] 1. The low-voltage isolating switch operating arm provided by the present invention can engage the rotary operating button of the air switch through the multi-functional operating head, and then extend the force arm of the rotary operating button through the handle, thereby reducing the force required to open and close the air switch.

[0021] 2. The low-voltage isolating switch operating arm provided by the present invention extends the distance between the operator and the transformer box, improving the safety of the operator when opening and closing the air switch; and improves the operating discomfort caused by the switch position being too high or too low. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the overall structure of the low-voltage isolating switch operating arm provided by the present invention;

[0023] Figure 2 A schematic diagram of the structure of the multifunctional operating head of the operating arm of the low-voltage disconnect switch provided by the present invention when viewed from above;

[0024] Figure 3 This is a schematic diagram of the internal structure of the multifunctional operating head of the low-voltage disconnect switch operating arm provided by the present invention.

[0025] In the picture:

[0026] 10-J-shaped operating head; 11-hook portion; 12-support rod; 13-connecting rod; 14-first connecting head;

[0027] 20-handle; 21-insulating rod; 22-coupling;

[0028] 30-Multi-function operating head; 31-Outer cylinder; 311-Notch; 32-Pressure piece; 33-Slide rod; 331-Limiting column; 34-Spring; 35-Support plate; 36-Second connector. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0030] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0031] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0033] This embodiment provides a low-voltage disconnect switch operating arm for extending the force arm of the air switch to solve the problems in the prior art that the force required to open and close the air switch is large and the operator is close to the transformer box, which is very dangerous.

[0034] Figure 1 This is a schematic diagram of the overall structure of the low-voltage isolating switch operating arm provided by the present invention, with reference to Figure 1 As shown, the low-voltage disconnect switch operating arm provided in this embodiment includes a multi-function operating head 30 and a handle 20, wherein the multi-function operating head 30 includes an outer cylinder 31, one end of which is an open end; zero or more telescopic parts are arranged in the outer cylinder 31, and the telescopic parts can be telescoped along the axial direction of the outer cylinder 31; an elastic part is arranged between the telescopic part and the outer cylinder 31, and the elastic part can push the telescopic part to move toward the open end of the outer cylinder 31; the handle 20 is fixed to the opposite end of the open end of the outer cylinder 31.

[0035] In the low-voltage isolating switch operating arm provided in this embodiment, when zero telescopic parts are provided in the outer tube 31, during operation, the rotary operating button of the air switch extends into the outer tube 31. When the handle 20 is pulled, the rotary operating button is engaged between the front and rear walls of the outer tube 31 and will not be detached from the outer tube 31, so that the rotary operating button can be opened and closed by rotating the handle 20.

[0036] When multiple telescopic parts are provided in the outer tube 31, during operation, the rotary operating button of the air switch extends between the telescopic parts, or between the telescopic part and the outer tube 31, so that the rotary operating button can be clamped between the telescopic parts, or between the telescopic part and the outer tube 31 when rotating; the provision of multiple telescopic parts can make the low-voltage isolating switch operating arm suitable for the opening and closing operations of rotary operating buttons of various widths.

[0037] The low-voltage isolating switch operating arm provided in this embodiment can engage the rotary operating button of the air switch through the multi-functional operating head 30, and then extend the force arm for pulling the rotary operating button through the handle 20, thereby reducing the force required to open and close the air switch; at the same time, it can extend the distance between the operator and the transformer box, improving the safety of the operator when opening and closing the air switch; and improving the operating discomfort caused by the switch position being too high or too low.

[0038] In this embodiment, a second connector 36 is fixed to the end of the outer tube 31 away from the open end thereof, and the outer tube 31 is assembled and fixed to the end of the handle 20 via the second connector 36 .

[0039] Continue to refer Figure 1As shown, the low-voltage disconnect switch operating arm provided in this embodiment also includes a J-shaped operating head 10, which is located at the end of the handle 20 away from the multi-function operating head 30. The J-shaped operating head 10 includes a hook portion 11 and a support rod 12, both of which are located at the free end of the J-shaped operating head 10. The hook portion 11 is used to open the disconnect switch, and the support rod 12 is used to close the disconnect switch.

[0040] The J-shaped operating head 10 provided in this embodiment can effectively prevent the switch blade from slipping during the opening process due to the shape design of the hook portion 11.

[0041] Preferably, in order to prevent the knife from slipping during the closing process, in this embodiment, the support rod 12 is inclined toward the end where the hook portion 11 is located, forming an angle between the support rod 12 and the hook portion 11; at the same time, the support rod 12 and the hook portion 11 extend in opposite directions to avoid interference with each other during operation.

[0042] More specifically, the J-shaped operating head 10 provided in this embodiment also includes a connecting rod 13 and a first connecting head 14. The hook portion 11 and the first connecting head 14 are respectively fixed to the two ends of the connecting rod 13, and the connecting rod 13 is assembled and fixed to the end of the handle 20 through the first connecting head 14.

[0043] In this embodiment, the handle 20 and the first connector 14 and the second connector 36 are all detachably connected and can be connected and fixed by means of threaded connection, or by means of plugging together and then fixing with pins or screws.

[0044] Specifically, the handle 20 includes several insulating rods 21, with adjacent insulating rods 21 connected and secured by a coupling 22. More specifically, the insulating rods 21 and coupling 22 can be connected and secured by threads, or by plugging them together and then securing them with a latch or screw. During use, the number of insulating rods 21 and coupling 22 can be adjusted as needed to achieve the desired length of the handle 20.

[0045] Figure 2 The multifunctional operating head 30 of the low-voltage disconnect switch operating arm provided by the present invention is viewed from above. Figure 1 and Figure 2 As shown, in this embodiment, notches 311 are provided at the bottom ends of both sides of the outer cylinder 31, so that the multifunctional operating head 30 can be suitable for the opening and closing operations of the rotating operating button whose width is greater than that of the outer cylinder 31, thereby expanding its scope of application; preferably, the height of the notch 311 is less than the length of the telescopic part to avoid the telescopic part being stuck on the cross-section of the notch 311.

[0046] Figure 3 This is a schematic diagram of the internal structure of the multifunctional operating head of the low-voltage isolating switch operating arm provided by the present invention, with reference to Figure 2 and Figure 3As shown, in this embodiment, the number of telescopic parts is preferably multiple, so that the multifunctional operating head 30 can be suitable for the opening and closing operations of rotating operating knobs of different thicknesses, thereby expanding its scope of application.

[0047] More specifically, the telescopic member is a pressing piece 32 ; a plurality of pressing pieces 32 are stacked, and adjacent pressing pieces 32 are slidably connected; the pressing piece 32 can be made of a 4 mm stainless steel sheet.

[0048] Preferably, the outer wall of the bottom end of the pressing piece 32 is covered with a rubber layer (not shown) to prevent the pressing piece 32 that is in contact with the rotating operating button from slipping when the rotating operating button is turned, thereby affecting the operating effect; further, the thickness of the rubber layer is not higher than the outer plane of the pressing piece 32 to avoid hindering the movement of the pressing piece 32.

[0049] In other embodiments, the telescopic member may also be a pressure rod (not shown); multiple pressure rods are neatly and densely arranged, with adjacent pressure rods slidingly connected; the pressure rods may be made of 4mm stainless steel rods. Similarly, the bottom end of the pressure rod may also be provided with a rubber layer to increase friction.

[0050] Continue to refer Figure 3 As shown, in this embodiment, the elastic member is preferably a spring 34; more specifically, the spring 34 is in a compressed state and is arranged between the telescopic member and the inner end surface of the outer cylinder 31; preferably, at least two springs 34 are arranged on each pressing plate 32 to ensure the stability of the displacement of the pressing plate 32.

[0051] In order to prevent the spring 34 from twisting and deforming, the low-voltage disconnect switch operating arm provided in this embodiment also includes a slide rod 33 and a support plate 35, wherein the slide rod 33 is inserted into the spring 34, and the support plate 35 is fixed in the outer cylinder 31. The support plate 35 is provided with a plurality of through holes corresponding to the position of the slide rod 33, and the slide rod 33 is inserted into the through hole and slides along the axial direction of the through hole.

[0052] To prevent the telescopic part from slipping out of the opening of the outer cylinder 31, in this embodiment, a limiting column 331 is provided at the end of the sliding rod 33. The diameter of the limiting column 331 is larger than the diameter of the through hole. The limiting column 331 can limit the moving distance of the telescopic part by abutting against the support plate 35.

[0053] Note: For fixing methods not explicitly stated in the text, common fixing methods such as threaded connection, welding or bonding can be selected as needed.

[0054] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Low voltage disconnect switch operating arm, characterized in that: include: A multifunctional operating head (30), the multifunctional operating head (30) comprising an outer cylinder (31), one end of the outer cylinder (31) being an open end; The outer cylinder (31) is provided with zero or more telescopic members, and the telescopic members are capable of telescoping along the axial direction of the outer cylinder (31); an elastic member is provided between the telescopic member and the outer cylinder (31), and the elastic member is capable of pushing the telescopic member to move toward the open end of the outer cylinder (31); a handle (20), the handle (20) being fixed to an end opposite to the open end of the outer cylinder (31); When zero of the telescopic members are provided in the outer cylinder (31), during operation, the rotary operating button of the air switch extends into the outer cylinder (31), and when the handle (20) is pulled, the rotary operating button is clamped between the front and rear walls of the outer cylinder (31); when multiple telescopic members are provided in the outer cylinder (31), during operation, the rotary operating button extends between the telescopic members, or between the telescopic member and the outer cylinder (31), so that the rotary operating button can be clamped between the telescopic members, or between the telescopic member and the outer cylinder (31) when rotating; The telescopic member is a pressing sheet (32); a plurality of the pressing sheets (32) are stacked and arranged, and adjacent pressing sheets (32) are slidably connected.

2. The low-voltage disconnect switch operating arm according to claim 1, characterized in that: Notches (311) are provided at the bottom ends of both sides of the outer cylinder (31); the height of the notches (311) is smaller than the length of the telescopic member.

3. The low-voltage disconnect switch operating arm according to claim 1, characterized in that: There are multiple telescopic parts.

4. The low-voltage disconnect switch operating arm according to claim 1, characterized in that: The outer wall of the bottom end of the pressing sheet (32) is covered with a glue layer; the thickness of the glue layer is not higher than the outer plane of the pressing sheet (32).

5. The low-voltage disconnect switch operating arm according to claim 1, characterized in that: The elastic member is a spring (34).

6. The low-voltage disconnect switch operating arm according to claim 5, characterized in that: The utility model also includes a slide rod (33) and a support plate (35), wherein the slide rod (33) is inserted into the spring (34), and the support plate (35) is fixed in the outer cylinder (31). The support plate (35) is provided with a plurality of through holes corresponding to the positions of the slide rod (33), and the slide rod (33) is inserted into the through hole and slides along the axial direction of the through hole.

7. The low-voltage disconnect switch operating arm according to claim 6, characterized in that: A limiting column (331) is provided at the end of the sliding rod (33), the diameter of the limiting column (331) being larger than the diameter of the through hole, and the limiting column (331) can limit the moving distance of the telescopic member by abutting against the support plate (35).

8. The low-voltage disconnect switch operating arm according to claim 1, characterized in that: The handle (20) comprises a plurality of sections of insulating rods (21), and two adjacent sections of the insulating rods (21) can be connected and fixed via a coupling (22).

9. The low-voltage disconnect switch operating arm according to claim 1, characterized in that: It also includes a J-shaped operating head (10), wherein the J-shaped operating head (10) includes a hook portion (11) and a support rod (12) located at a free end thereof; The support rod (12) is inclined toward the end where the hook portion (11) is located; The J-shaped operating head (10) is located at the end of the handle (20) away from the multifunctional operating head (30).

Images