Manual opening device of magnetic control column switch

Abstract

The utility model relates to the field of pole-mounted switches, in particular to a magnetic control pole-mounted switch manual opening device which comprises a switch support, a movable iron core, a rotating shaft, a prying piece and a prying frame, the rotating shaft is rotationally matched with the switch support, and one end of the prying piece is installed on the rotating shaft; the prizing frame is installed on the movable iron core, a prizing cavity is formed in the prizing frame, the end, away from the rotating shaft, of the prizing piece is located in the prizing cavity, and a gap is formed between the end, located in the prizing cavity, of the prizing piece and the inner wall of the prizing cavity. The pole-mounted switch has the advantage that normal on-off of the pole-mounted switch cannot be affected due to aging after the pole-mounted switch is used outdoors for a long time.

Description

Technical Field

[0001] The present application relates to the field of pole-mounted switches, and in particular to a manual tripping device for a magnetically controlled pole-mounted switch. Background Art

[0002] A pole-mounted switch is an outdoor switch installed on a high-voltage overhead distribution line pole. It is suitable for suburban and rural power grid systems and is mainly used for disconnecting, closing, and carrying line load current or fault current.

[0003] In the existing related technology, the pole switch includes a switch bracket, a drive shaft, a transmission rod, a moving iron core, a static iron core and a reset spring. The drive shaft is rotatably matched with the switch bracket, and an operating handle is fixedly installed at one end of the drive shaft to facilitate the operator to drive the drive shaft to rotate. One end of the transmission rod is fixedly installed on the drive shaft, and the other end of the transmission rod rotates and slides to match the moving iron core, and the moving iron core slides to match the switch bracket along the height direction of the switch bracket. The static iron core is located at the bottom of the moving iron core, and when the moving iron core moves in a direction away from the static iron core, the load current or fault current is disconnected. One end of the reset spring is fixedly installed on the drive shaft, and the other end of the reset spring is fixedly installed on the opening seat.

[0004] When the load current or fault current needs to be disconnected, the staff rotates the driving shaft through the operating handle. The rotation of the driving shaft drives the transmission rod to swing, thereby causing the static iron core to slide away from the moving iron core along the height direction of the switch bracket, thereby disconnecting the load current or fault current.

[0005] With regard to the above-mentioned related technologies, the pole-mounted switch is prone to aging and loosening after long-term use under outdoor conditions, making the operating handle easy to move under the action of external force, thereby driving the moving iron core to move away from or close to the static iron core, thereby affecting the normal opening and closing of the pole-mounted switch. Summary of the invention

[0006] In order to ensure that the pole-mounted switch is not easily affected by aging after being used for a long time in outdoor conditions, the present application provides a manual opening device for a magnetically controlled pole-mounted switch.

[0007] The present application provides a magnetically controlled column switch manual opening device that adopts the following technical solution:

[0008] A manual opening device for a switch on a magnetic control column, comprising a switch bracket, a moving iron core, a rotating shaft, a prying piece and a prying frame, wherein the rotating shaft is rotatably matched with the switch bracket, and one end of the prying piece is installed on the rotating shaft;

[0009] The prying frame is installed on the moving iron core, and a prying chamber is opened on the prying frame. The end of the prying member away from the rotating shaft is located in the prying chamber, and a gap is provided between the end of the prying member located in the prying chamber and the inner wall of the prying chamber.

[0010] By adopting the above technical solution, a gap is provided between one end of the prying piece located in the prying chamber and the inner wall of the prying chamber, so that after the pole switch is used for a long time in outdoor conditions, even if the components are aged and loose, the rotating shaft is easy to rotate under the action of external force, and the gap between the prying piece and the prying chamber provides an invalid rotation amount for the rotating shaft, that is, before the gap of the rotating shaft disappears, it is difficult for the rotating shaft to make the moving iron core slide away from the moving iron core along the height direction of the switch bracket through the prying frame, so that the pole switch is not easily affected by the rotating shaft, thereby ensuring the normal opening and closing of the pole switch.

[0011] Optionally, the rotating shaft is provided with an operating handle, a reset elastic member is provided between the rotating shaft and the switch bracket, and two ends of the reset elastic member are respectively installed on the rotating shaft and the switch bracket;

[0012] The rotating shaft is installed with a first limit piece, and the switch bracket is installed with a second limit piece. When the first limit piece is tightly fitted with the second limit piece, the reset elastic piece has a deformation amount, and a gap is provided between the end of the prying piece away from the rotating shaft and the inner wall of the prying chamber.

[0013] By adopting the above technical solution, when the operator does not drive the rotating shaft to rotate through the operating handle, the reset elastic member is deformed so that a gap is always left between the prying member and the inner wall of the prying chamber, and the second limit member limits the rotation of the first limit member, so that the first limit member is not easy to collide with the moving iron core.

[0014] When the operator does not drive the rotating shaft to rotate through the operating handle, the operator overcomes the elastic force of the reset elastic member, causing the first limit member to rotate in a direction away from the second limit member, thereby causing the prying member to fit tightly against the inner wall of the prying chamber, thereby disconnecting the load current or fault current.

[0015] Optionally, the type of the prying member is a bolt, and the prying member is passed through the rotating shaft and is threadedly engaged with the rotating shaft.

[0016] By adopting the above technical solution, according to the situation of the operator or the actual working surface size of the pole, the prying member is rotated to change the force arm size between the rotating shaft and the prying frame, thereby changing the force required to drive the prying frame to move, thereby ensuring the applicability of the prying member.

[0017] Optionally, a bolt spring washer is provided between the prying member and the rotating shaft, and the nut of the prying member and the outer circumferential surface of the rotating shaft are tightly fitted on the bolt spring washer.

[0018] By adopting the above technical solution, the bolt spring washer enables the threaded surface of the prying member to always be tightly fitted with the threaded surface of the rotating shaft, thereby ensuring the connection strength between the prying member and the rotating shaft.

[0019] Optionally, the prying frame includes a mounting rod and a gate plate, the mounting rod is mounted on the static iron core, the gate plate is slidably fitted on the mounting rod, and the prying chamber is formed by the mounting rod and the gate plate.

[0020] By adopting the above technical solution, the position of the gate plate is slidably adjusted accordingly according to the length of the prying member, so that when the load current or fault current needs to be disconnected, the prying member is effectively pressed against the inner wall of the prying chamber.

[0021] Optionally, the moving iron core and the prying frame are both provided with a plurality of them, and the plurality of prying frames are respectively provided in one-to-one correspondence with each moving iron core;

[0022] The prying frame includes a mounting rod, a first flat washer, a gate plate and a nut. The mounting rod is installed on the static iron core. The first flat washer is detachably installed on the mounting rod. The gate plate is located on the top of the first flat washer and is detachably installed on the mounting rod. The prying chamber is formed by the mounting rod and the gate plate. The nut is located on the top of the gate plate and is threadedly engaged with the mounting rod.

[0023] By adopting the above technical solution, the specification and thickness of the first flat washer are replaced and adjusted according to the aging condition of each moving iron core, so that after the rotating rod is rotated, several prying members are simultaneously tightly fitted against the inner walls of each prying chamber, which is beneficial to ensure that multiple load currents or fault currents are disconnected at the same time or ensure that the pole switch is started smoothly, thereby ensuring the safety and reliability of the pole switch.

[0024] Optionally, the prying frame also includes a second flat washer and a plate spring washer, the second flat washer is located at the top of the gate plate and is removably mounted on the mounting rod, the plate spring washer is located at the top of the second flat washer and is removably mounted on the mounting rod, and the nut is located at the top of the plate spring washer and is threadedly engaged with the mounting rod.

[0025] By adopting the above technical solution, the plate spring washer enables the thread surface of the nut to always be tightly fitted against the thread surface of the mounting rod, thereby ensuring the connection strength between the nut and the mounting rod.

[0026] Optionally, the rotating shaft is provided with an operating handle, a reset elastic member is provided between the rotating shaft and the switch bracket, and two ends of the reset elastic member are respectively installed on the rotating shaft and the switch bracket;

[0027] The rotating shaft is provided with a first stopper, the type of the first stopper is a bolt, the first stopper is passed through the rotating shaft and matched with the rotating shaft thread;

[0028] The switch bracket is installed with a second limit member, and the second limit member is provided with a limit inclined surface, and the limit inclined surface is inclined from top to bottom toward the position of the first limit member. When the first limit member is tightly fitted against the limit inclined surface, the reset elastic member has a deformation amount, and a gap is provided between the end of the prying member away from the rotating shaft and the inner wall of the prying chamber.

[0029] By adopting the above technical solution, according to the aging condition of the column switch, the first limit piece is rotated so that the first limit piece is tightly fitted to different positions of the limit slope, thereby changing the initial width of the gap between the end of the prying piece away from the rotating shaft and the inner wall of the prying chamber, thereby changing the amount of invalid rotation of the rotating shaft and changing the sensitivity of the normal opening and closing of the column switch to the rotation of the rotating shaft.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. A gap is provided between one end of the prying piece located in the prying chamber and the inner wall of the prying chamber, so that after the pole switch is used for a long time in outdoor conditions, even if the components are aged and loose, the rotating shaft is easy to rotate under the action of external force, and the gap between the prying piece and the prying chamber provides an invalid rotation amount for the rotating shaft, that is, before the gap of the rotating shaft disappears, it is difficult for the rotating shaft to make the moving iron core slide away from the moving iron core along the height direction of the switch bracket through the prying frame, so that the pole switch is not easily affected by the rotating shaft, thereby ensuring the normal opening and closing of the pole switch.

[0032] 2. According to the situation of the operator or the actual working surface size of the pole, the prying piece is rotated to change the size of the force arm between the rotating shaft and the prying frame, thereby changing the force required to drive the prying frame to move, thereby ensuring the applicability of the prying piece.

[0033] 3. According to the length of the prying piece, the position of the gate plate is correspondingly adjusted by sliding, so that when the load current or fault current needs to be disconnected, the prying piece is effectively pressed against the inner wall of the prying chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of a local explosion in Example 1 of the present application.

[0035] Figure 2 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0036] Explanation of the accompanying drawings: 1. switch bracket; 11. second limit member; 2. moving iron core; 3. prying frame; 301. prying chamber; 31. mounting rod; 32. gate plate; 321. gate; 322. keyway; 33. first flat washer; 34. second flat washer; 35. plate body spring washer; 36. nut; 4. rotating shaft; 41. operating handle; 42. first limit member; 5. prying member; 51. bolt spring washer; 6. reset elastic member; 61. spring hanging plate. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-2 This application is described in further detail.

[0038] Example 1.

[0039] Embodiment 1 of the present application discloses a manual opening device for a switch on a magnetically controlled column. Figure 1 The manual opening device of the switch on the magnetic control column includes a switch bracket 1, a moving iron core 2, a prying frame 3, a rotating shaft 4 and a prying member 5.

[0040] Reference Figure 1 , the switch bracket 1 is arranged in a rectangular shape. In the embodiment 1 of the present application, the number of the moving iron cores 2 is set to three, and the three moving iron cores 2 are evenly distributed along the length direction of the switch bracket 1 .

[0041] Reference Figure 1 In the embodiment 1 of the present application, the number of the prying frames 3 is set to three, and the three prying frames 3 are respectively set in one-to-one correspondence with each moving iron core 2;

[0042] The prying frame 3 includes a mounting rod 31, a gate plate 32, a first flat washer 33, a second flat washer 34, a plate spring washer 35 and a nut 36. There are two mounting rods 31, which are distributed along the length direction of the switch bracket 1, and the two mounting rods 31 are arranged along the thickness direction of the moving iron core 2. The bottom of the mounting rod 31 is fixedly mounted on the moving iron core 2, and the top of the mounting rod 31 is provided with a thread.

[0043] Reference Figure 1 The gate plate 32 is rectangular, and a gate opening 321 is provided on one side of the gate plate 32. The gate opening 321 is provided along the thickness direction of the gate plate 32. The gate plate 32 is provided with two key slots 322, which are respectively located on both sides of the gate opening 321, and the two key slots 322 are respectively provided corresponding to each mounting rod 31. The key slots 322 are provided along the thickness direction of the gate plate 32, and the key slots 322 extend along the width direction of the gate plate 32.

[0044] Reference Figure 1There are two first flat washers 33 , two second flat washers 34 , two plate spring washers 35 and two nuts 36 , and the two first flat washers 33 , the two second flat washers 34 , the two plate spring washers 35 and the two nuts 36 are respectively arranged in one-to-one correspondence with each keyway 322 .

[0045] Reference Figure 1 The first flat washer 33 is sleeved on the top of the mounting rod 31, and the first flat washer 33 is detachably slidably fitted to the mounting rod 31 along the length direction of the mounting rod 31. The gate plate 32 is located on the top of the first flat washer 33, the mounting rod 31 is penetrated through the key slot 322, and the gate plate 32 is detachably slidably fitted to the mounting rod 31 along the length direction of the mounting rod 31. The gate plate 32 is slidably fitted to the mounting rod 31 along the extension direction of the key slot 322, and the bottom of the gate plate 32 is tightly fitted to the top of the first flat washer 33;

[0046] The second flat washer 34 is sleeved on the mounting rod 31, and the second flat washer 34 is located at the top of the gate plate 32. The second flat washer 34 is detachably slidably fitted on the mounting rod 31 along the direction of the mounting rod 31, and the bottom of the second flat washer 34 is tightly fitted on the top of the gate plate 32. The plate body spring washer 35 is in a compressed state, and the plate body spring washer 35 is sleeved on the mounting rod 31, and the plate body spring washer 35 is located at the top of the second flat washer 34. The plate body spring washer 35 is detachably slidably fitted on the mounting rod 31 along the direction of the mounting rod 31, and the bottom of the plate body spring washer 35 is tightly fitted on the top of the second flat washer 34. The nut 36 is threadedly sleeved on the mounting rod 31, and the nut 36 is located at the top of the plate body spring washer 35, and the bottom of the nut 36 is tightly fitted on the top of the plate body spring washer 35.

[0047] The first flat washer 33 and the second flat washer 34 make it difficult for the gate plate 32 to slide along the extension direction of the key slot 322 under the action of external force, which is beneficial to ensure the position stability of the gate plate 32; in addition, by adjusting the specifications and thickness of the first flat washer 33 and the second flat washer 34, the gate plate 32 can be adjusted along the length direction of the mounting rod 31, which is beneficial to ensure that the moving iron cores 2 move at the same time; finally, the plate body spring washer 35 makes the threaded surface of the nut 36 always tightly fit against the threaded surface of the mounting rod 31, thereby ensuring the connection strength between the nut 36 and the mounting rod 31.

[0048] Reference Figure 1 A prying chamber 301 is formed between the gate plate 32 and the two mounting rods 31;

[0049] The two ends of the rotating shaft 4 are respectively rotatably matched with the two ends of the switch bracket 1 through bearings, and the rotating shaft 4 is arranged along the length direction of the switch bracket 1. In the embodiment 1 of the present application, the number of the prying members 5 is set to three, and the three prying members 5 are respectively arranged in a one-to-one correspondence with each prying chamber 301, and the type of the three prying members 5 is selected as bolts;

[0050] The prying member 5 is inserted through the rotating shaft 4 and is threadedly matched with the rotating shaft 4, so that by rotating the nut of the prying member 5, the prying member 5 is moved toward or away from the prying chamber 301, thereby adjusting the force arm relationship between the rotating shaft 4 and the gate plate 32, thereby adjusting the magnitude of the force required to drive the gate plate 32 to move. One end of the prying member 5 inserted through the rotating shaft 4, that is, the end of the prying member 5 away from the rotating shaft 4, is located in the prying chamber 301, and a gap is provided between the end of the prying member 5 located in the prying chamber 301 and the inner wall of the prying chamber 301, so that the rotating shaft 4 is not easy to drive the gate plate 32 away from the switch bracket 1 along the direction of the mounting rod 31 when rotating. In addition, a bolt spring washer 51 is provided between the prying member 5 and the rotating shaft 4. The bolt spring washer 51 is in a compressed state, and the two sides of the bolt spring washer 51 are respectively tightly fitted against the nuts of the rotating shaft 4 and the prying member 5, so that the threaded surface of the prying member 5 is always tightly fitted against the threaded surface of the rotating shaft 4, thereby ensuring the connection strength between the prying member 5 and the rotating shaft 4.

[0051] Reference Figure 1 An operating handle 41 is fixedly mounted on one end of the rotating shaft 4, and the operating handle 41 is arranged on the outside of the switch housing (not shown in the figure) on the column through a sealing ring, so that the operator can drive the rotating shaft 4 to rotate through the operating handle 41.

[0052] Reference Figure 1 A reset elastic member 6 is provided between the rotating shaft 4 and the switch bracket 1, and the reset elastic member 6 is provided near the operating handle 41. The reset elastic member 6 has a deformation amount, and in the embodiment 1 of the present application, the type of the reset elastic member 6 is selected as a spring, and the reset elastic member 6 is in a normal tension state. A spring hanging plate 61 is fixedly installed at one end of the reset elastic member 6, and the spring hanging plate 61 is installed on the rotating shaft 4 by bolts. The other end of the reset spring is fixedly installed on the switch frame, so as to drive the prying member 5 to move from top to bottom in a direction away from the gate plate 32.

[0053] Reference Figure 1 , the rotating shaft 4 is installed with a first limit member 42. In Example 1 of the present application, the type of the first limit member 42 is selected as a bolt, and the first limit member 42 is passed through the rotating shaft 4 and is threadedly matched with the rotating shaft 4. The second limit member 11 is arranged in a rod shape, and one end of the second limit member 11 is fixedly installed on the switch frame along the thickness direction of the switch frame. When the end of the first limit member 42 passing through the rotating shaft 4 is tightly matched with the end of the second limit member 11 away from the switch frame, the reset elastic member 6 is in a stretched state, and a gap is provided between the end of the prying member 5 away from the rotating shaft 4 and the inner wall of the prying chamber 301, so that the first limit member 42 is not easy to collide with the moving iron core 2.

[0054] The implementation principle of a manual opening device for a magnetically controlled pole-mounted switch in Example 1 of the present application is as follows: the rotating shaft 4 is driven to rotate by the operating handle 41, and the rotation of the rotating shaft 4 drives the prying member 5 to rotate in a direction close to the opening plate 32, so that the width of the gap between one end of the prying member 5 located in the prying chamber 301 and the inner wall of the prying chamber 301 is reduced, and then finally the moving iron core 2 is moved in a direction away from the static iron core by acting on the opening plate 32, thereby ensuring that the pole-mounted switch is not easily affected by aging after being used for a long time in outdoor conditions.

[0055] Example 2.

[0056] The main difference between Example 2 of the present application and Example 1 is that the specific configuration of the second limiting member 11 is different.

[0057] Reference Figure 2 The bottom of the second limiter 11 is fixedly mounted on the switch bracket, and a limit slope 111 is arranged on the top of the second limiter 11, and the limit slope 111 is arranged obliquely from top to bottom toward the position of the first limiter 42. When one end of the first limiter 42 that passes through the rotating shaft 4 is tightly fitted with the limit slope 111, the reset elastic member 6 is in a stretched state, and a gap is arranged between the end of the prying member 5 that is away from the rotating shaft 4 and the inner wall of the prying chamber 301, so that the first limiter 42 is not easy to collide with the moving iron core 2. In addition, by rotating the first limiter 42, adjusting the contact position between the first limiter 42 and the limit slope 111, adjusting the initial rotation angle of the rotating shaft 4, and then changing the initial width of the gap between the end of the prying member 5 located in the prying chamber 301 and the inner wall of the prying chamber 301, thereby changing the sensitivity of the gate plate 32 to the rotation of the rotating shaft 4.

[0058] The implementation principle of Example 2 of the present application is the same as that of Example 1 and will not be repeated here.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A manual opening device for a magnetically controlled switch on a column, characterized in that: It comprises a switch bracket (1), a moving iron core (2), a rotating shaft (4), a prying member (5) and a prying frame (3), wherein the rotating shaft (4) is rotatably matched with the switch bracket (1), and one end of the prying member (5) is mounted on the rotating shaft (4); The prying frame (3) is installed on the moving iron core (2), and the prying frame (3) is provided with a prying chamber (301). The end of the prying member (5) away from the rotating shaft (4) is located in the prying chamber (301), and a gap is provided between the end of the prying member (5) located in the prying chamber (301) and the inner wall of the prying chamber (301).

2. A manual opening device for a magnetically controlled switch on a column according to claim 1, characterized in that: The rotating shaft (4) is provided with an operating handle (41), a reset elastic member (6) is provided between the rotating shaft (4) and the switch bracket (1), and two ends of the reset elastic member (6) are respectively installed on the rotating shaft (4) and the switch bracket (1); The rotating shaft (4) is provided with a first limit member (42), and the switch bracket (1) is provided with a second limit member (11); when the first limit member (42) is tightly fitted with the second limit member (11), the reset elastic member (6) has a deformation amount, and a gap is provided between the end of the prying member (5) away from the rotating shaft (4) and the inner wall of the prying chamber (301).

3. A manual opening device for a magnetically controlled column switch according to claim 1, characterized in that: The type of the prying member (5) is a bolt, and the prying member (5) is passed through the rotating shaft (4) and threadedly matched with the rotating shaft (4).

4. A manual opening device for a magnetically controlled column switch according to claim 3, characterized in that: A bolt spring washer (51) is provided between the prying member (5) and the rotating shaft (4), and the nut of the prying member (5) and the outer peripheral surface of the rotating shaft (4) are tightly fitted on the bolt spring washer (51).

5. A manual opening device for a magnetically controlled switch on a column according to claim 3, characterized in that: The prying frame (3) comprises a mounting rod (31) and a gate plate (32), wherein the mounting rod (31) is mounted on the static iron core, the gate plate (32) is slidably engaged with the mounting rod (31), and the prying chamber (301) is formed by enclosing the mounting rod (31) and the gate plate (32).

6. A manual opening device for a magnetically controlled column switch according to claim 1, characterized in that: The moving iron core (2) and the prying frame (3) are both provided with a plurality of them, and the plurality of prying frames (3) are respectively provided in one-to-one correspondence with each moving iron core (2); The prying frame (3) comprises a mounting rod (31), a first flat washer (33), a gate plate (32) and a nut (36); the mounting rod (31) is mounted on a static iron core; the first flat washer (33) is detachably mounted on the mounting rod (31); the gate plate (32) is located on the top of the first flat washer (33) and is detachably mounted on the mounting rod (31); the prying chamber (301) is formed by the mounting rod (31) and the gate plate (32); the nut (36) is located on the top of the gate plate (32) and is threadedly engaged with the mounting rod (31).

7. A manual opening device for a magnetically controlled switch on a column according to claim 6, characterized in that: The prying frame (3) also includes a second flat washer (34) and a plate spring washer (35), wherein the second flat washer (34) is located at the top of the gate plate (32) and can be detachably mounted on the mounting rod (31), the plate spring washer (35) is located at the top of the second flat washer (34) and can be detachably mounted on the mounting rod (31), and the nut (36) is located at the top of the plate spring washer (35) and is threadedly engaged with the mounting rod (31).

8. The manual opening device for a magnetically controlled column switch according to claim 1, characterized in that: The rotating shaft (4) is provided with an operating handle (41), a reset elastic member (6) is provided between the rotating shaft (4) and the switch bracket (1), and two ends of the reset elastic member (6) are respectively installed on the rotating shaft (4) and the switch bracket (1); The rotating shaft (4) is provided with a first stopper (42), the type of the first stopper (42) being a bolt, the first stopper (42) being passed through the rotating shaft (4) and threadably engaged with the rotating shaft (4); The switch bracket (1) is provided with a second limit member (11), the second limit member (11) being provided with a limit inclined surface (111), the limit inclined surface (111) being inclined from top to bottom toward the position where the first limit member (42) is located, when the first limit member (42) is tightly fitted on the limit inclined surface (111), the reset elastic member (6) has a deformation amount, and a gap is provided between the end of the prying member (5) away from the rotating shaft (4) and the inner wall of the prying chamber (301).

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