Novel outdoor pole-mounted load switch

Abstract

The utility model provides a novel outdoor pole-mounted load switch, which comprises a pole and a switch box, an operating mechanism and a driving pull rod are arranged in the switch box, and a switching-off operating handle and a switching-on operating handle are arranged on one side of the switch box; the opening operation handle and the closing operation handle are both in transmission connection with the driving pull rod through an operation mechanism, and the driving pull rod is in transmission connection with a moving contact arranged in an arc extinguish chamber of the pole through a transmission piece; the opening operating handle is used for driving the driving pull rod to move from a first position to a second position along the length direction of the driving pull rod through the operating mechanism, and the closing operating handle is used for driving the driving pull rod to move from the second position to the first position through the operating mechanism; closing and opening are realized; according to the utility model, the structure is simple, the operation is convenient, the arc extinguish chamber is arranged in the pole, and the driving pull rod is arranged at the bottom of the pole, so that compared with the scheme that a conventional load switch adopts SF6 arc extinguish, the volume of a box body is obviously reduced, and the weight is lighter.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switches, in particular to a novel outdoor pole-mounted load switch. Background Art

[0002] For outdoor grid transformers powered by overhead line systems, long-term operation in outdoor humid and condensing environments seriously affects the insulation performance of the switches in the high-voltage indoor air-insulated high-voltage cabinets. The degradation of insulation performance will cause damage to the power distribution equipment, which will seriously affect the safety of power supply. Ordinary transformers in the sky cannot cut off the high voltage of the transformers in the overhead line system in time, and power outage maintenance is complicated, costly, and unreliable.

[0003] Therefore, it is necessary to use a load switch to solve the above problems. The structure of a conventional load switch is as follows: Figure 1 , Figure 2 As shown, the load switch is opened and closed by pulling the operating handle 1 or electrically controlling it, and the arc generated between the contacts when the circuit breaker breaks the circuit is extinguished by SF6 gas. However, since the SF6 arc extinguishing chamber 2 is located outside the pole, the box body is large in size and weight, and the insulating gas SF6 used escapes, which is not conducive to environmental protection. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a novel outdoor pole-mounted load switch.

[0005] The novel outdoor pole-mounted load switch provided by the utility model comprises a pole and a switch box arranged at the bottom of the pole, an operating mechanism and a driving pull rod are arranged inside the switch box, and a switch opening operating handle and a switch closing operating handle are arranged on one side of the switch box;

[0006] The opening operating handle and the closing operating handle are both connected to the driving rod through the operating mechanism, and the driving rod is connected to the moving contact inside the arc extinguishing chamber of the pole through the transmission member;

[0007] The opening operating handle is used to drive the driving rod to move from the first position to the second position along the length direction of the driving rod through the operating mechanism, and the closing operating handle is used to drive the driving rod to move from the second position to the first position through the operating mechanism;

[0008] When the driving rod is in the first position, the moving contact is at a first height, the moving contact contacts the static contact, and the switch is closed; when the driving rod is in the second position, the moving contact is at a second height, the moving contact separates from the static contact, and the switch is closed, and the first height is higher than the second height.

[0009] Preferably, the transmission member comprises a driving plate and an insulating pull rod, one end of the driving plate is rotatably connected to the driving pull rod, and the other end of the driving plate is rotatably connected to the bottom end of the insulating pull rod;

[0010] The insulating pull rod is provided with a mold spring, and when the switch is closed, the mold spring is in a stretched state, and when the switch is opened, the mold spring is in a released state;

[0011] The top end of the insulating pull rod is connected to the bottom end of the moving contact, and when the driving pull rod is in the first position, the height of the other end of the driving plate is higher than the height of the other end of the driving plate when the driving pull rod is in the second position.

[0012] Preferably, a vacuum interrupter is provided inside the pole, and the moving contact and the static contact are both provided inside the vacuum interrupter.

[0013] Preferably, the operating mechanism comprises a closing operating mechanism, and the closing operating mechanism comprises a driving shaft, a driven shaft, a closing spring, a cam and an output crank arm;

[0014] The closing operating handle is connected to the driving shaft via the closing operating shaft, the driving shaft is meshed and driven with the driven shaft, and the end of the driven shaft is connected to the closing spring;

[0015] The closing operating handle is used to drive the driven shaft to rotate in a first direction, and the closing spring is used to drive the driven shaft to rotate in a second direction opposite to the first direction;

[0016] A cam is sleeved on the driven shaft, the output crank arm is connected to the driving pull rod, and when the driven shaft rotates in the second direction, the cam moves toward the direction close to the output crank arm;

[0017] The cam is used to push the output crank arm and drive the driving rod to move toward the first position.

[0018] Preferably, the operating mechanism comprises a switch-off operating mechanism, the switch-off operating mechanism comprises a switch-off half-shaft and a switch-off latch, and the switch-off operating handle is connected to the switch-off half-shaft via the switch-off operating shaft;

[0019] The opening brake latch includes a lifting state and a limiting state, and the opening brake half shaft is used to drive the opening brake latch to switch from the limiting state to the lifting state;

[0020] When the switch is closed, the opening latch is in a limited state, and the driving rod is limited by the opening latch. When the opening latch is in a raised state, the driving rod moves to the second position driven by the mold spring, and the switch is opened.

[0021] Preferably, a status pointer is provided on one side of the switch box, and the status pointer is transmission-connected to the driving rod;

[0022] When the driving pull rod is in the first position, the state pointer points to the closing mark on the outer side of the switch cabinet, and when the driving pull rod is in the second position, the state pointer points to the opening mark on the outer side of the switch cabinet.

[0023] Preferably, a locking structure is further included, and the locking structure includes a locking operation handle, a closing locking limit shaft, an opening locking limit shaft and a transmission rod;

[0024] The locking operation handle is installed on one side of the switch cabinet, the rotating shaft of the locking operation handle is fixedly connected to the middle of the transmission rod, and both ends of the transmission rod are rotatably connected to one end of the closing locking limit shaft and one end of the opening locking limit shaft respectively;

[0025] The transmission rod is used to drive the other end of the closing locking limit shaft to move towards the direction close to the closing operation handle, and drive the other end of the opening locking limit shaft to move towards the direction close to the opening operation handle;

[0026] The other end of the closing locking limit shaft is used to engage and limit the closing operation shaft connected to the closing operation handle, and the other end of the opening locking limit shaft is used to engage and limit the opening operation shaft connected to the opening operation handle.

[0027] Preferably, there are multiple pole columns, and the multiple pole columns are arranged on the top of the switch cabinet along the length direction of the driving pull rod.

[0028] Compared with the prior art, the utility model has the following beneficial effects:

[0029] The utility model has a simple structure and is convenient to operate. By adopting the technical means of arranging the arc extinguishing chamber inside the pole column and arranging the driving pull rod at the bottom of the pole column, compared with the conventional load switch using SF6 arc extinguishing, the volume of the box body is significantly reduced, and the weight is lighter. Description of the Drawings

[0030] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the utility model will become more obvious:

[0031] Figure 1 It is a schematic diagram of the overall structure of a traditional conventional load switch;

[0032] Figure 2 It is a schematic diagram of the structure of the traditional conventional load switch from a side view angle;

[0033] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0034] Figure 4 It is a schematic diagram of the structure of the utility model from a top view angle;

[0035] Figure 5 It is a schematic structural diagram of the control mechanism in the present utility model;

[0036] Figure 6 It is an assembly schematic diagram of the control mechanism and the driving pull rod in the present utility model;

[0037] Figure 7 It is a half-sectional schematic diagram of the pole column in the present utility model;

[0038] Figure 8 It is a schematic structural diagram of the locking structure in the present utility model.

[0039] As shown in the figure:

[0040] Operating handle 1 Driven shaft 14

[0041] SF6 arc extinguishing chamber 2 Cam 15

[0042] Opening operating handle 3 Driving shaft 16

[0043] Locking operating handle 4 Driving plate 17

[0044] Closing operating handle 5 Insulating pull rod 18

[0045] Status pointer 6 Moving contact 19

[0046] Operating mechanism 7 Static contact 20

[0047] Driving pull rod 8 Vacuum arc extinguishing chamber 21

[0048] Closing spring 9 Closing operating shaft 22

[0049] Opening half shaft 10 Opening operating shaft 23

[0050] Opening detent 11 Closing locking limit shaft 24

[0051] Output shaft 12 Opening locking limit shaft 25

[0052] Output crank arm 13 Specific embodiments

[0053] The present utility model will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made. These all belong to the protection scope of the present utility model.

[0054] The utility model discloses a novel outdoor pole-mounted load switch. By arranging an arc extinguishing chamber inside a pole and arranging a driving pull rod at the bottom of the pole, compared with a conventional load switch adopting SF6 arc extinguishing, the structure is more reasonable, the box volume is significantly reduced, and the weight is lighter.

[0055] According to the new outdoor column load switch provided by the utility model, Figure 3-8 As shown, it includes a pole and a switch box arranged at the bottom of the pole, an operating mechanism 7 and a driving rod 8 are arranged inside the switch box, and an opening operating handle 3 and a closing operating handle 5 are arranged on one side of the switch box; in a preferred example, there are multiple poles, and the multiple poles are arranged on the top of the switch box along the length direction of the driving rod 8.

[0056] The opening operating handle 3 and the closing operating handle 5 are both connected to the driving rod 8 through the operating mechanism 7, and the driving rod 8 is connected to the moving contact 19 inside the arc extinguishing chamber of the pole through a transmission member; the opening operating handle 3 is used to drive the driving rod 8 to move from a first position to a second position along the length direction of the driving rod 8 through the operating mechanism 7, and the closing operating handle 5 is used to drive the driving rod 8 to move from the second position to the first position through the operating mechanism 7; a vacuum arc extinguishing chamber 21 is provided inside the pole, and the moving contact 19 and the static contact 20 are both provided inside the vacuum arc extinguishing chamber 21. Compared with the SF6 arc extinguishing used by conventional load switches, the new load switch uses vacuum arc extinguishing and air insulation, which is more environmentally friendly, safe and reliable.

[0057] When the driving rod 8 is in the first position, the moving contact 19 is in the first height, the moving contact 19 contacts the static contact 20, and the switch is closed; when the driving rod 8 is in the second position, the moving contact 19 is in the second height, the moving contact 19 is separated from the static contact 20, and the switch is closed, and the first height is higher than the second height. By pulling down the opening and closing operating handles 3 and 5, the driving rod 8 can be driven to move to the second position and the first position respectively, thereby driving the moving contact 19 to descend and ascend respectively, and realizing the opening and closing actions.

[0058] like Figure 7 As shown, the transmission member includes a driving plate 17 and an insulating rod 18, one end of the driving plate 17 is rotatably connected to the driving rod 8, and the other end of the driving plate 17 is rotatably connected to the bottom end of the insulating rod 18; a mold spring is provided on the insulating rod 18, when the switch is closed, the mold spring is in a stretched state, and when the switch is opened, the mold spring is in a released state; the top end of the insulating rod 18 is connected to the bottom end of the moving contact 19, when the driving rod 8 is in the first position, the height of the other end of the driving plate 17 is higher than the height of the other end of the driving plate 17 when the driving rod 8 is in the second position.

[0059] like Figure 5 , Figure 6 As shown, the operating mechanism 7 includes a closing operating mechanism, which includes a driving shaft 16, a driven shaft 14, a closing spring 9, a cam 15 and an output crank arm 13; the closing operating handle 5 is connected to the driving shaft 16 through the closing operating shaft 22, the driving shaft 16 and the driven shaft 14 are meshingly connected, and the end of the driven shaft 14 is connected to the closing spring 9; the closing operating handle 5 is used to drive the driven shaft 14 to rotate in a first direction, and the closing spring 9 is used to drive the driven shaft 14 to rotate in a second direction opposite to the first direction; the driven shaft 14 is sleeved with a cam 15, and the output crank arm 13 is connected to the driving pull rod 8, and when the driven shaft 14 rotates in the second direction, the cam 15 moves in a direction close to the output crank arm 13; the cam 15 is used to push the output crank arm 13 and drive the driving pull rod 8 to move toward the first position.

[0060] like Figure 5 , Figure 6 As shown, the operating mechanism 7 includes a trip operating mechanism, and the trip operating mechanism includes a trip half-shaft 10 and a trip latch 11. The trip operating handle 3 is connected to the trip half-shaft 10 through the trip operating shaft 23; the trip latch 11 includes a lifting state and a limiting state, and the trip half-shaft 10 is used to drive the trip latch 11 to switch from the limiting state to the lifting state; when the switch is closed, the trip latch 11 is in the limiting state, and the driving rod 8 is limited by the trip latch 11. When the trip latch 11 is in the lifted state, the driving rod 8 moves to the second position driven by the mold spring, and the switch is opened.

[0061] In a preferred example, a status pointer 6 is provided on one side of the switch box, and the status pointer 6 is transmission-connected to the driving rod 8; when the driving rod 8 is in a first position, the status pointer 6 points to a closing mark on the outside of the switch box, and when the driving rod 8 is in a second position, the status pointer 6 points to an opening mark on the outside of the switch box.

[0062] In a preferred embodiment, Figure 8As shown in the figure, the new outdoor pole-mounted load switch further includes a locking structure, which includes a locking operation handle 4, a closing locking limit shaft 24, a tripping locking limit shaft 25 and a transmission rod; the locking operation handle 4 is installed on one side of the switch box, the rotating shaft of the locking operation handle 4 is fixedly connected to the middle of the transmission rod, and both ends of the transmission rod are rotatably connected to one end of the closing locking limit shaft 24 and one end of the tripping locking limit shaft 25 respectively; the transmission rod is used to drive the other end of the closing locking limit shaft 24 to move towards the closing operation handle 5, and drive the other end of the tripping locking limit shaft 25 to move towards the tripping operation handle 3; the other end of the closing locking limit shaft 24 is used to engage and limit the closing operation shaft 22 connected to the closing operation handle 5, and the other end of the tripping locking limit shaft 25 is used to engage and limit the tripping operation shaft 23 connected to the tripping operation handle 3. When the locking operation handle 4 is pulled down, the locking operation handle 4 drives the transmission rod to rotate, so that the tripping locking limit shaft 25 and the closing locking limit shaft 24 are respectively inserted into the tripping operation shaft 23 and the closing operation shaft 22, thereby realizing locking.

[0063] The working principle of the present utility model is as follows:

[0064] When the switch is in the tripping state, pull down the closing operation handle 5, and at the same time drive the driving shaft 16 on the operating mechanism 7 to rotate. Drive the driven shaft 14 to rotate through the gear on the driving shaft 16, so that the closing spring 9 on the operating mechanism 7 starts to store energy. At the same time, the cam 15 on the driven shaft 14 rotates together. When the closing spring 9 reaches the energy storage limit position, it releases energy and drives the output crank 13 to move to the left through the cam 15, and at the same time drives the driving pull rod 8 to move to the left, and drives the driving plate 17 to make the insulating pull rod 18 move upward, and the moving contact 19 moves upward to be in close contact with the static contact 20, and the switch closes, and the state pointer 6 points to the closing position;

[0065] When the switch is in the closing state, pull down the tripping operation handle 3, and drive the tripping half shaft 10 on the operating mechanism 7 to rotate, so as to release the tripping pawl 11, and at the same time release the acting force of the die spring inside the insulating pull rod 18, and drive the driving plate 17 to make the insulating pull rod 18 move downward, and drive the driving pull rod 8 to move to the right, and the moving contact 19 is separated from the static contact 20, and the switch trips, and the state pointer 6 points to the tripping position;

[0066] When the switch is in the closing or tripping state, pull down the locking operation handle 4, so that the closing locking limit shaft 24 moves towards the closing operation shaft 22, and the tripping locking limit shaft 25 moves towards the tripping operation shaft 23, preventing the closing operation handle 5 and the tripping operation handle 3 from operating. At this time, the switch cannot perform electric or manual closing and tripping operations.

[0067] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0068] The specific embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present utility model. Without conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. A new type of outdoor pole load switch, characterized in that: It comprises a pole and a switch box arranged at the bottom of the pole, wherein an operating mechanism (7) and a driving pull rod (8) are arranged inside the switch box, and an opening operating handle (3) and a closing operating handle (5) are arranged on one side of the switch box; The opening operating handle (3) and the closing operating handle (5) are both connected to the driving rod (8) through an operating mechanism (7), and the driving rod (8) is connected to the moving contact (19) inside the arc extinguishing chamber of the pole through a transmission member; The opening operating handle (3) is used to drive the driving rod (8) to move from a first position to a second position along the length direction of the driving rod (8) through the operating mechanism (7); and the closing operating handle (5) is used to drive the driving rod (8) to move from the second position to the first position through the operating mechanism (7); When the driving rod (8) is located at a first position, the moving contact (19) is located at a first height, the moving contact (19) is in contact with the stationary contact (20), and the switch is closed; when the driving rod (8) is located at a second position, the moving contact (19) is located at a second height, the moving contact (19) is separated from the stationary contact (20), and the switch is closed, and the first height is higher than the second height.

2. The novel outdoor pole-mounted load switch according to claim 1 is characterized in that: The transmission member comprises a driving plate (17) and an insulating pull rod (18), one end of the driving plate (17) is rotatably connected to the driving pull rod (8), and the other end of the driving plate (17) is rotatably connected to the bottom end of the insulating pull rod (18); The insulating pull rod (18) is provided with a mold spring, and when the switch is closed, the mold spring is in a stretched state, and when the switch is opened, the mold spring is in a released state; The top end of the insulating pull rod (18) is connected to the bottom end of the moving contact (19), and when the driving pull rod (8) is in the first position, the height of the other end of the driving plate (17) is higher than the height of the other end of the driving plate (17) when the driving pull rod (8) is in the second position.

3. The novel outdoor pole-mounted load switch according to claim 1 is characterized in that: A vacuum interrupter (21) is arranged inside the pole, and the moving contact (19) and the static contact (20) are both arranged inside the vacuum interrupter (21).

4. The novel outdoor pole-mounted load switch according to claim 1 is characterized in that: The operating mechanism (7) comprises a closing operating mechanism, and the closing operating mechanism comprises a driving shaft (16), a driven shaft (14), a closing spring (9), a cam (15) and an output crank arm (13); The closing operating handle (5) is connected to the drive shaft (16) via the closing operating shaft (22); the drive shaft (16) is meshingly connected to the driven shaft (14); and the end of the driven shaft (14) is connected to the closing spring (9); The closing operating handle (5) is used to drive the driven shaft (14) to rotate in a first direction, and the closing spring (9) is used to drive the driven shaft (14) to rotate in a second direction opposite to the first direction; The driven shaft (14) is sleeved with a cam (15), the output crank arm (13) is connected to the driving pull rod (8), and when the driven shaft (14) rotates in the second direction, the cam (15) moves in a direction close to the output crank arm (13); The cam (15) is used to push the output crank arm (13) and drive the driving rod (8) to move toward the first position.

5. The novel outdoor pole-mounted load switch according to claim 2 is characterized in that: The operating mechanism (7) comprises a switch-off operating mechanism, the switch-off operating mechanism comprises a switch-off half-shaft (10) and a switch-off latch (11), and the switch-off operating handle (3) is connected to the switch-off half-shaft (10) via a switch-off operating shaft (23); The opening brake latch (11) comprises a lifting state and a limiting state, and the opening brake half shaft (10) is used to drive the opening brake latch (11) to switch from the limiting state to the lifting state; When the switch is closed, the opening latch (11) is in a limited state, and the driving rod (8) is limited by the opening latch (11). When the opening latch (11) is in a raised state, the driving rod (8) moves to the second position driven by the mold spring, and the switch is opened.

6. The novel outdoor pole-mounted load switch according to claim 1 is characterized in that: A status pointer (6) is provided on one side of the switch box, and the status pointer (6) is transmission-connected to a driving pull rod (8); When the driving rod (8) is located at the first position, the status pointer (6) points to the closing mark on the outside of the switch box; when the driving rod (8) is located at the second position, the status pointer (6) points to the opening mark on the outside of the switch box.

7. The novel outdoor pole-mounted load switch according to claim 1 is characterized in that: It also includes a locking structure, which includes a locking operating handle (4), a closing locking limit shaft (24), an opening locking limit shaft (25) and a transmission rod; The locking operating handle (4) is installed on one side of the switch box, the rotating shaft of the locking operating handle (4) is fixedly connected to the middle part of the transmission rod, and the two ends of the transmission rod are rotatably connected to one end of the closing locking limit shaft (24) and one end of the opening locking limit shaft (25) respectively; The transmission rod is used to drive the other end of the closing lock limit shaft (24) to move in a direction close to the closing operating handle (5), and drive the other end of the opening lock limit shaft (25) to move in a direction close to the opening operating handle (3); The other end of the closing lock limit shaft (24) is used for locking and limiting the closing operating shaft (22) connected to the closing operating handle (5), and the other end of the opening lock limit shaft (25) is used for locking and limiting the opening operating shaft (23) connected to the opening operating handle (3).

8. The novel outdoor pole-mounted load switch according to claim 1 is characterized in that: There are multiple poles, and the multiple poles are arranged on the top of the switch box along the length direction of the driving pull rod (8).

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