10KV alternating current isolating switch

Abstract

The invention relates to the technical field of disconnecting switches, and discloses a disconnecting switch which is characterized in that a placement slope is located on a rotation path of a knife switch, the placement slope can better fit the surface of the knife switch compared with a placement sheet, and the placement slope increases the contact area of the knife switch to disperse the acting force generated when the knife switch collides with the placement sheet. According to the invention, the worker slides the placing piece to enable the placing piece to be located at different positions of the supporting strip, and the placing piece is fixed through the locking assembly, so that the placing piece is prevented from being damaged in the process of abutting against the placing piece due to the fact that the worker swings the placing piece vigorously, and the placing piece is prevented from sinking in the rotating process. The placing piece can be stably located on the rotating path of the knife switch and can abut against the knife switch, so that the rotating angle of the knife switch towards the side away from the knife holder can be limited, the situation that the rotating angle of the knife switch is too large is avoided, the knife switch is not prone to colliding with other electrical parts, and damage to the electrical parts or the knife switch is reduced.

Description

Technical Field

[0001] This application relates to the technical field of disconnect switches, and in particular to a 10KV AC disconnect switch. Background Art

[0002] A disconnect switch is a switching device mainly used for "isolating power sources, performing switching operations, and connecting and disconnecting small current circuits". Disconnect switches can be divided into outdoor disconnect switches and indoor disconnect switches according to different usage scenarios. Outdoor disconnect switches usually need to be manually closed by maintenance personnel. In the related art, a disconnect switch includes a housing, a blade is rotatably connected to the housing, a knife rest is provided on the housing, and a connecting plate is provided on the housing. The connecting plate is used to connect other electrical components. When the blade abuts against the knife rest, the disconnect switch realizes circuit connection.

[0003] When the staff realizes the opening of the disconnect switch, the staff rotates the blade so that the blade can rotate away from the knife rest. If the staff drives the blade with too much force, the blade may abut against other electrical components on the connecting plate, resulting in damage to the electrical components or the blade. Summary of the Invention

[0004] In order to improve the situation where the rotation angle of the blade is too large, this application provides a 10KV AC disconnect switch.

[0005] A 10KV AC disconnect switch provided by this application adopts the following technical solutions: A 10KV AC disconnect switch includes a housing, a blade is rotatably connected to the housing, a knife rest is provided on the housing, a support bar is provided on the housing, a placement piece is slidably connected to the support bar, the placement piece is located on the rotation path of the blade, and a locking component is provided on the housing. The locking component is used to fix the placement piece; when the blade abuts against the placement piece, the blade cannot continue to rotate away from the knife rest, and the disconnect switch is in the open state.

[0006] By adopting the above technical solutions, the staff slides the placement piece to make the placement piece located at different positions on the support bar, and fixes the placement piece through the locking component, so that the placement piece can be stably located on the rotation path of the blade, and the placement piece can abut against the blade, thereby limiting the rotation angle of the blade away from the knife rest side, avoiding the situation where the rotation angle of the blade is too large, making the blade not easily collide with other electrical components, and reducing the damage to the electrical components or the blade.

[0007] Optionally, a placement block is provided on the placement piece, and a placement inclined surface is provided on the surface of the placement block away from the housing. The distance between the placement inclined surface and the housing gradually increases along the direction from the knife rest to the placement piece, and the placement inclined surface is located on the rotation path of the blade.

[0008] By adopting the above technical solution, by placing the inclined surface on the rotation path of the knife switch, the inclined surface can fit the surface of the knife switch more closely compared to the placing piece. The inclined surface increases the contact area of the knife switch to disperse the acting force generated when the knife switch collides with the placing piece, avoiding damage to the knife switch during the process of the knife switch abutting against the placing piece due to the staff swinging the knife switch vigorously, and making the knife switch not prone to dent during rotation.

[0009] Optionally, the locking assembly includes a locking bolt. A first locking hole for the locking bolt to pass through is formed in the placing piece. The first locking hole extends along the length direction of the support bar. A second locking hole for the locking bolt to pass through is formed in the support bar, and the locking bolt is threadedly connected to the second locking hole.

[0010] By adopting the above technical solution, by the locking bolt passing through the first locking hole and the locking bolt being threadedly connected to the second locking hole, the mutual fixation of the placing piece and the support bar by the locking bolt is realized; since the first locking hole extends along the length direction of the support bar, the placing piece can slide along the length direction of the support bar, so that the staff can adjust the position of the placing piece as needed. By the different positions of the placing piece on the support bar, the placing piece can limit the rotation angle of the knife switch, enabling the knife switch to adapt to electrical components at different positions and reducing the occurrence of damage between the electrical components and the knife switch.

[0011] Optionally, a placing groove is formed in the placing piece. A plurality of placing elastic pieces are arranged in the placing groove. A limiting strip is rotatably connected to the knife switch, and the rotation path of the limiting strip is located between the two placing elastic pieces; when the limiting strip is located between the two placing elastic pieces, the knife switch is fixed on the placing piece.

[0012] By adopting the above technical solution, by arranging the placing elastic pieces in the placing groove and the rotation path of the limiting strip being located between the two placing elastic pieces, the staff can drive the limiting strip to insert between the two placing elastic pieces, so that the two placing elastic pieces can limit the rotation of the limiting strip, realizing that the knife switch is relatively stable on the placing piece, so that when the staff repairs the circuit, the knife switch in the switch is not easily closed due to the blowing of the wind or the accidental touch of the staff, thus ensuring the safety of the staff and the circuit.

[0013] Optionally, a receiving groove for placing the placing elastic piece is formed in the groove wall of the placing groove. A stop strip for blocking the opening of the receiving groove is slidably connected to the placing groove, and the stop strip is located in the insertion path of the locking bolt inserting into the first locking hole; when the locking bolt inserts into the first locking hole, the stop strip does not block the receiving groove, and at this time the placing elastic piece protrudes from the receiving groove.

[0014] By adopting the above technical solution, when the staff fixes the placement piece on the support bar, the stop bar is located in the insertion path of the locking bolt into the first locking hole, so that the locking bolt can limit the movement of the stop bar, and the stop bar does not block the opening of the receiving groove, so that the placement spring piece can protrude from the receiving groove, and the placement spring piece can limit the limit bar; when the isolating switch is not installed, the stop bar blocks the receiving groove, making it difficult for foreign objects to enter the receiving groove, thereby reducing the possibility of damage to the placement spring piece when not in use.

[0015] Optionally, a limit block is provided on the limit bar, a guide block is provided on the placement plate, a guide slope is provided on the guide block, the distance between the guide slope and the placement spring sheet gradually decreases along the direction from the knife seat to the placement plate, and the guide slope is located on the moving path of the limit block; when the isolating switch is opened, the limit block moves between the two placement spring sheets through the guide slope.

[0016] By adopting the above technical solution, the distance between the guide block and the placement spring sheet is gradually reduced along the direction from the knife seat to the placement sheet, and the guide slope is located on the moving path of the limit block. The limit block can move along the guide slope, so that the limit block can drive the limit bar to rotate, so that the limit bar can be located between the two placement spring sheets, and the placement spring sheets can limit the limit bar, so that the staff does not need to manually limit the knife, thereby reducing the staff's operating steps.

[0017] Optionally, an elastic strip is provided on the stop strip, and the elastic strip is located on the rotation path of the limit strip; when the elastic strip drives the limit strip to rotate, the limit block is located between two placement spring sheets, and the limit block is located on the side of the guide block facing the support strip.

[0018] By adopting the above technical solution, the elastic bar is located on the rotation path of the limit bar, so that the elastic bar can drive the limit bar to rotate, and the limit block can be located on the side of the guide block facing the support bar, so that the guide block can limit the limit block from moving in the direction away from the support bar, so that the limit block cannot be directly detached from the two placed spring pieces. The staff needs to first rotate the limit bar to let the limit block detach from the side of the guide block close to the support bar, and then move the knife to unlock the knife.

[0019] Optionally, a first magnet is provided on the knife gate, a second magnet is provided on the limit bar, and the first magnet absorbs the second magnet; when the first magnet absorbs the second magnet, the guiding slope is located on the moving path of the limit block.

[0020] By adopting the above technical solution, when the disconnector is switched off, the first magnet adsorbs the second magnet, and the limiting strip is not easily rotated as the knife blade rotates, so that the position of the limiting block is fixed, that is, the guiding inclined surface is located on the moving path of the limiting block, so that the limiting block can stably slide through the guiding inclined surface, reducing the situation that the limiting strip is driven to rotate during the rotation of the knife blade, resulting in the limiting block not being able to abut against the guiding inclined surface after the disconnector is switched off.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. By placing the inclined surface on the rotation path of the knife blade, the placing inclined surface can fit the surface of the knife blade more closely compared to the placing piece. The placing inclined surface increases the contact area of the knife blade to disperse the force generated when the knife blade collides with the placing piece, avoiding damage to the knife blade during the process of the staff swinging the knife blade vigorously and causing the knife blade to abut against the placing piece, and making the knife blade not easily dent during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of Embodiment 1; Figure 2 is a schematic structural diagram highlighting the placing piece in Embodiment 1; Figure 3 is a schematic structural diagram of Embodiment 2; Figure 4 is along Figure 3 a partial cross-sectional view taken along line A-A in Figure 5 is a schematic structural diagram highlighting the connecting plate in Embodiment 2.

[0023] Reference numerals: 1, housing; 11, locking assembly; 2, knife blade; 21, bent piece; 22, limiting strip; 221, limiting block; 23, first groove; 231, first magnet; 24, second groove; 241, second magnet; 3, knife base; 4, support strip; 41, placing piece; 411, placing block; 412, placing inclined surface; 42, first locking hole; 43, second locking hole; 44, placing groove; 441, accommodating groove; 442, placing elastic piece; 443, stop strip; 444, connecting plate; 445, elastic strip; 45, guiding block; 451, guiding inclined surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will further describe the present application in detail Figures 1-5 with reference to the accompanying drawings.

[0025] Embodiment 1 This embodiment discloses a 10KV AC disconnector. Refer to Figure 1, a 10KV AC disconnect switch, including a housing 1, a knife blade 2 rotatably connected to the housing 1, and a knife rest 3 fixedly connected to the housing 1. When the knife blade 2 abuts against the knife rest 3, the disconnect switch is in the closed state; when the knife blade 2 separates from the knife rest 3, the disconnect switch is in the open state. The disconnect switch can be applied to 10KV alternating current.

[0026] Refer to Figure 1 and Figure 2 , a support bar 4 is fixedly connected to the surface of the housing 1, and the support bar 4 extends away from the knife rest 3. A placement piece 41 is slidably arranged on the support bar 4, and a locking assembly 11 is arranged on the placement piece 41 for restricting the placement piece 41 from sliding on the support bar 4.

[0027] Refer to Figure 2 , the locking assembly 11 includes a locking bolt. A first locking hole 42 is formed on the surface of the placement piece 41, and the first locking hole 42 extends along the length direction of the support bar 4 for the locking bolt to pass through. A second locking hole 43 is formed on the surface of the support bar 4, and the second locking hole 43 is for the locking bolt to be threadedly connected.

[0028] Refer to Figure 2 , when the locking bolt passes through the first locking hole 42 and is threadedly connected to the second locking hole 43, the placement piece 41 is fixed to the support bar 4, and the locking assembly 11 fixes the placement piece 41.

[0029] Refer to Figure 1 and Figure 2 , a bent piece 21 is integrally formed on the surface of the knife blade 2, the bent piece 21 and the knife blade 2 are perpendicular to each other, and the bent piece 21 extends along the length direction of the knife blade 2. A placement block 411 is integrally formed on the placement piece 41, and a placement inclined surface 412 is formed on the surface of the placement block 411 away from the support bar 4. The distance between the placement inclined surface 412 and the support bar 4 gradually increases along the direction from the knife rest 3 to the support bar 4.

[0030] Refer to Figure 1 and Figure 2 , the placement inclined surface 412 is located on the rotation path of the knife blade 2, and the bent piece 21 and the knife blade 2 can simultaneously abut against the placement inclined surface 412. After the knife blade 2 separates from the knife rest 3, the knife blade 2 can abut against the placement inclined surface 412, and at this time, the placement inclined surface 412 can restrict the knife blade 2 from continuing to rotate away from the knife rest 3.

[0031] The implementation principle of Embodiment 1 is: The staff manually passes the locking bolt through the first locking hole 42 to thread the locking bolt onto the second locking hole 43, thereby fixing the placement piece 41 to the support bar 4.

[0032] Embodiment 2 Refer toFigure 3 and Figure 4 , the difference between this embodiment and Embodiment 1 is that a placement groove 44 is formed on the surface of the placement piece 41 away from the tool holder 3, and the placement groove 44 penetrates to the surface of the placement piece 41 away from the support bar 4. Accommodation grooves 441 are formed on the groove walls on both opposite sides of the placement groove 44, and a placement elastic piece 442 is fixedly connected to the bottom wall of the accommodation groove 441. The placement elastic piece 442 protrudes in a direction away from the bottom wall of the accommodation groove 441, and the placement elastic piece 442 can protrude out of the accommodation groove 441 and be located in the placement groove 44.

[0033] Referring to Figure 4 and Figure 5 , two stop bars 443 are slidably connected to the groove wall of the placement groove 44, and the stop bars 443 can block the opening of the accommodation groove 441. When the stop bars 443 block the opening of the accommodation groove 441, the stop bars 443 limit the movement of the placement elastic piece 442 from the accommodation groove 441 to the placement groove 44. A connecting plate 444 is fixedly connected to the surface of the stop bar 443, and the connecting plate 444 is fixedly connected to the two stop bars 443. The connecting plate 444 is located on the insertion path of the locking bolt into the first locking hole 42. When the locking bolt is inserted into the first locking hole 42, the locking bolt can abut against the connecting plate 444, and at this time, the placement elastic piece 442 can protrude out of the accommodation groove 441.

[0034] Referring to Figure 4 , a limiting bar 22 is rotatably connected to the surface of the knife gate 2, and the limiting bar 22 can be inserted into the placement groove 44, and the limiting bar 22 can be located between the two placement elastic pieces 442. When the limiting bar 22 is located between the two placement elastic pieces 442, the two placement elastic pieces 442 limit the rotation of the limiting bar 22, realizing the limitation of the knife gate 2 by the support piece.

[0035] Referring to Figure 4 , a limiting block 221 is integrally formed on the surface of the limiting bar 22, and the limiting block 221 can be inserted between the two placement elastic pieces 442. A guiding block 45 is fixedly connected to the groove wall of the placement groove 44, and a guiding inclined surface 451 is formed on the surface of the guiding block 45 away from the support bar 4. The distance between the guiding inclined surface 451 and the support bar 4 gradually decreases along the direction from the locking bolt to the placement elastic piece 442, and the guiding inclined surface 451 is located on the moving path of the limiting block 221.

[0036] Referring to Figure 4 , when the knife gate 2 rotates towards the placement piece 41, the limiting block 221 moves along the guiding inclined surface 451, so that the guiding inclined surface 451 can drive the limiting block 221 to rotate, and the limiting block 221 moves to the side of the two placement elastic pieces 442 away from the locking bolt.

[0037] Referring to Figure 4, an elastic strip 445 is fixedly connected to the surface of the connecting plate 444. The elastic strip 445 extends along the length direction perpendicular to the support strip 4, and the elastic strip 445 is located on the rotation path of the limiting strip 22. When the limiting block 221 moves to the side of the two placing elastic pieces 442 away from the locking bolt, the elastic strip 445 is compressed by the extrusion of the limiting strip 22. At this time, the elastic strip 445 can drive the limiting strip 22 to rotate, so that the limiting block 221 can move between the two placing elastic pieces 442, and at this time the limiting block 221 is located on the side of the guiding block 45 close to the support strip 4, realizing that the guiding block 45 restricts the limiting block 221 from directly disengaging from the two placing elastic pieces 442 in the direction away from the support strip 4.

[0038] Referring to Figure 4 , a first groove 23 is formed on the surface of the knife switch 2. The first groove 23 extends along the rotation direction of the limiting strip 22, and a first magnet 231 is fixedly connected in the first groove 23. A second groove 24 is formed on the surface of the limiting strip 22, and a second magnet 241 is fixedly connected in the second groove 24, and the first magnet 231 adsorbs the second magnet 241.

[0039] Referring to Figure 4 , when the first magnet 231 adsorbs the second magnet 241, the limiting strip 22 can be temporarily fixed on the knife switch 2 until the limiting block 221 abuts against the guiding inclined surface 451, so that the limiting block 221 moves along the guiding inclined surface 451, realizing the rotation of the limiting strip 22.

[0040] The implementation principle of Embodiment 2 is as follows: The staff drives the knife switch 2 to rotate to realize the opening of the disconnecting switch. The first magnet 231 adsorbs the second magnet 241, so that the limiting block 221 can abut against the guiding inclined surface 451. The limiting block 221 moves along the guiding inclined surface 451, so that the limiting block 221 can be located on the side of the two placing elastic pieces 442 away from the locking bolt. At this time, the elastic strip 445 can drive the end of the limiting strip 22 away from the limiting block 221 to rotate, so that the limiting block 221 can move between the two placing elastic pieces 442. At this time, the limiting block 221 is located on the side of the guiding block 45 facing the support strip 4, realizing the limitation of the limiting block 221 by the placing elastic piece 442 and the guiding block 45, so that the knife switch 2 can be temporarily fixed on the housing 1 to prevent the staff from accidentally touching and causing the disconnecting switch to close.

[0041] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the ordinary meanings as understood by those of ordinary skill in the art to which this application pertains. The terms "first", "second", "third" and similar terms used in the description and claims of this application do not denote any order, quantity or importance, but are merely used to distinguish different components. The terms such as "a" or "an" do not denote a limitation of quantity, but rather denote the presence of at least one. The terms such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The terms such as "upper", "lower", "left", "right" etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0042] The foregoing are only the preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of this application shall be included within the protection scope of this application.

Claims

1. A 10KV AC disconnector, comprising a housing (1), a knife (2) rotatably connected to the housing (1), a knife seat (3) provided on the housing (1), characterized in that: The housing (1) is provided with a support bar (4), the support bar (4) is slidably connected with a placement sheet (41), the placement sheet (41) is located on the rotation path of the knife switch (2), and the housing (1) is provided with a locking assembly (11), the locking assembly (11) is used to fix the placement sheet (41); when the knife switch (2) abuts against the placement sheet (41), the knife switch (2) cannot continue to rotate in a direction away from the knife seat (3), and the isolating switch is in an open state.

2. A 10KV AC isolating switch according to claim 1, characterized in that: A placement block (411) is provided on the placement sheet (41), and a placement slope (412) is provided on the surface of the placement block (411) away from the shell (1), and the distance between the placement slope (412) and the shell (1) gradually increases along the direction from the knife seat (3) to the placement sheet (41), and the placement slope (412) is located on the rotation path of the gate knife (2).

3. A 10KV AC isolating switch according to claim 1, characterized in that: The locking assembly (11) comprises a locking bolt, a first locking hole (42) for the locking bolt to pass through is formed on the placement sheet (41), the first locking hole (42) extends along the length direction of the support bar (4), a second locking hole (43) for the locking bolt to pass through is formed on the support bar (4), and the locking bolt is threadedly connected to the second locking hole (43).

4. A 10KV AC isolating switch according to claim 3, characterized in that: The placement sheet (41) is provided with a placement groove (44), a plurality of placement spring sheets (442) are arranged in the placement groove (44), the knife gate (2) is rotatably connected to a limit strip (22), and the rotation path of the limit strip (22) is located between two placement spring sheets (442); when the limit strip (22) is located between the two placement spring sheets (442), the knife gate (2) is fixed on the placement sheet (41).

5. A 10KV AC isolating switch according to claim 4, characterized in that: The groove wall of the placement groove (44) is provided with a receiving groove (441) for placing the spring piece (442), and the placement groove (44) is slidably connected with a stopper strip (443) for blocking the opening of the receiving groove (441), and the stopper strip (443) is located in the insertion path of the locking bolt into the first locking hole (42); when the locking bolt is inserted into the first locking hole (42), the stopper strip (443) does not block the receiving groove (441), and at this time, the placement spring piece (442) protrudes from the receiving groove (441).

6. A 10KV AC isolating switch according to claim 5, characterized in that: The limit bar (22) is provided with a limit block (221), the placement sheet (41) is provided with a guide block (45), the guide block (45) is provided with a guide slope (451), the distance between the guide slope (451) and the placement spring sheet (442) gradually decreases along the direction from the knife seat (3) to the placement sheet (41), and the guide slope (451) is located on the moving path of the limit block (221); when the isolating switch is opened, the limit block (221) moves between the two placement spring sheets (442) via the guide slope (451).

7. A 10KV AC isolating switch according to claim 6, characterized in that: An elastic strip (445) is provided on the stop strip (443), and the elastic strip (445) is located on the rotation path of the limit strip (22); when the elastic strip (445) drives the limit strip (22) to rotate, the limit block (221) is located between two placement spring sheets (442), and the limit block (221) is located on the side of the guide block (45) facing the support strip (4).

8. The 10KV AC isolating switch according to claim 6, characterized in that: The knife gate (2) is provided with a first magnet (231), the limit bar (22) is provided with a second magnet (241), and the first magnet (231) absorbs the second magnet (241); when the first magnet (231) absorbs the second magnet (241), the guiding inclined surface (451) is located on the moving path of the limit block (221).

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