Automatic drawer seat for low voltage frame circuit breaker

Abstract

The utility model relates to the technical field of power system low -voltage electrical apparatus, concretely relates to a kind of automatic drawer seat of low-voltage frame circuit breaker, including installation box, the top of installation box is equipped with slidingly connected movable plate, the top of installation box is equipped with main shaft, two fixed rings are set on the main shaft, each the fixed ring is fixedly connected with the installation box, the both ends of the main shaft are uniformly fixed with the first sector gear for moving drawer seat, the main shaft is transmission connection with the movable plate, the inside of installation box is equipped with driving part, the top of installation box is equipped with linkage, one end of the linkage is transmission connection with the movable plate, the other end is transmission connection with the driving part, driving part moves movable plate by linkage assembly, movable plate drives main shaft rotation, main shaft moves drawer seat by the first sector gear, to complete the work of automatic drawer seat automatic propulsion.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of low-voltage electric power system equipment, especially to an automatic drawer seat of low-voltage frame circuit breaker. BACKGROUND

[0002] The existing low-voltage universal circuit breaker drawer seat can only push in and push out the circuit breaker by manually rotating the handle to realize the connection and separation between the circuit breaker and the drawer seat.

[0003] The drawer seat is connected with the copper bar of the circuit breaker through the internal contact clamp. In order to ensure the reliability of the connection, the clamping force of the contact clamp is large, which results in a large labor intensity of the personnel in the process of pushing in and pushing out the entire circuit breaker body into and out of the drawer seat. In addition, uneven force or excessive pushing in or pushing out during the operation of pushing in or pushing out the circuit breaker body into and out of the drawer seat can also easily cause damage to the internal mechanism of the drawer seat, and the operation requirement is high. SUMMARY

[0004] Therefore, the utility model provides an automatic drawer seat of low-voltage frame circuit breaker to solve the problem of high operation requirement and large labor intensity of the existing low-voltage universal circuit breaker drawer seat which can only be manually operated.

[0005] To achieve the above purpose, the utility model provides an automatic drawer seat of low-voltage frame circuit breaker, which comprises a mounting box, a movable plate slidably connected to the top of the mounting box, a main shaft provided on the top of the mounting box, two fixed rings sleeved on the main shaft, each fixed ring being fixedly connected with the mounting box, a first sector gear for driving the drawer seat to move provided at the two ends of the main shaft, the main shaft being in transmission connection with the movable plate, a driving member arranged in the mounting box, a linkage member provided on the top of the mounting box, one end of the linkage member being in transmission connection with the movable plate and the other end being in transmission connection with the driving member.

[0006] The driving member drives the movable plate to move through the linkage assembly, the movable plate drives the main shaft to rotate, and the main shaft drives the drawer seat to move through the first sector gear to complete the automatic pushing in and pushing out of the drawer seat.

[0007] Preferably, two limiting plates are fixedly arranged on the top of the mounting box, and each limiting plate is attached to one side of the movable plate.

[0008] Preferably, a support plate is fixedly arranged on the top of the limiting plate in a vertical state towards the movable plate, and the movable plate is sleeved on the support plate.

[0009] Preferably, the movable plate comprises a horizontal plate and a vertical plate, one end of the horizontal plate is fixedly connected with one end of the vertical plate in a perpendicular state, the lateral side of the vertical plate is sleeved on the support plate, the vertical plate is in transmission connection with the linkage, and the horizontal plate is in transmission connection with the main shaft.

[0010] Preferably, a plurality of gear grooves are arranged on the horizontal plate, at least one second sector gear is fixedly arranged on the main shaft, and the second sector gear is in meshing connection with the gear grooves.

[0011] Preferably, a position switch is fixedly arranged on the top of the mounting box, a push rod is arranged on the working end of the position switch in a matched mode, one end of the push rod extends in a perpendicular state and is fixedly connected with the vertical plate, the position switch is in electrical connection with the driving part, the position switch comprises a separation position, an experiment position and a connection position, the experiment position is arranged at the middle part of the position switch, and the separation position and the connection position are arranged close to the ends of the position switch respectively.

[0012] Preferably, the linkage comprises:

[0013] a threaded shaft, the threaded shaft is arranged on the vertical plate in a penetrating mode and is in threaded connection, and a bolt head is fixedly arranged on the end of the threaded shaft away from the main shaft;

[0014] a fixed plate, the fixed plate is fixedly arranged on the top of the mounting box, and the bolt head penetrates through the fixed plate and is in rotational connection;

[0015] a linkage gear, the linkage gear is arranged between the vertical plate and the fixed plate, the linkage gear is sleeved on the threaded shaft and is in fixed connection, and the linkage gear is in transmission connection with the driving part.

[0016] Preferably, the driving part comprises:

[0017] a reduction motor, the reduction motor is fixedly arranged in the interior of the mounting box, and a driving gear is fixedly arranged on the output shaft of the reduction motor;

[0018] a driven gear, the driven gear is arranged in the interior of the mounting box in a rotational connection mode, and the driven gear is in meshing connection with the driving gear and the linkage gear.

[0019] Preferably, the mounting box comprises a hollow base and a bottom plate, at least four reinforcing columns are fixedly arranged in the interior of the base, and the bottom plate is fixedly arranged on the top of the base in cooperation with the four reinforcing columns through at least four screws.

[0020] The utility model discloses the beneficial effects of:

[0021] 1. Using the reduction motor replaces manpower, and the working strength of personnel is greatly reduced.

[0022] 2. Provide a variety of operating modes, remote operation, but also on-site use of electric operation and manual operation.

[0023] 3. Electric operation of the operating force is more balanced, compared with the original manual operation, the overall life of the drawer seat mechanism is greatly improved.

[0024] 4. The position switch ensures that the circuit breaker can only be operated in and out of the drawer seat in the open state, and ensures that the circuit breaker will not be pushed into or out of the drawer seat. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to make the purpose, technical scheme and advantages of the present application clearer, the following will further illustrate the present application in detail with specific examples.

[0026] Figure 1 It is a structural schematic diagram of the embodiment of the present application.

[0027] Figure 2 It is an exploded structural schematic diagram of the embodiment of the present application.

[0028] Figure 3 It is a three-dimensional structural schematic diagram of the driving member of the embodiment of the present application.

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the position switch of the embodiment of the present application.

[0030] Figure 5 It is an electrical schematic diagram of the embodiment of the present application.

[0031] In the figure, the marks are:

[0032] 1, mounting box; 2, movable plate; 3, main shaft; 4, fixed ring; 5, first sector gear; 6, driving member; 7, linkage member; 8, limiting plate; 9, support plate; 10, cross plate; 11, longitudinal plate; 12, gear slot; 13, second sector gear; 14, position switch; 15, push rod; 16, threaded shaft; 17, bolt head; 18, fixed plate; 19, linkage gear; 20, speed reducer motor; 21, driving gear; 22, driven gear; 23, base; 24, bottom plate; 25, reinforcing column; 26, screw. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application clearer, the following will further illustrate the present application in detail with specific examples.

[0034] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] like Figures 1 to 4 As shown, an automatic drawer base for a low-voltage frame circuit breaker includes a mounting box 1. A movable plate 2 is slidably connected to the top of the mounting box 1. A main shaft 3 is provided on the top of the mounting box 1. Two fixing rings 4 are sleeved on the main shaft 3. Each fixing ring 4 is fixedly connected to the mounting box 1. First sector gears 5 for driving the drawer base to move are fixed at both ends of the main shaft 3. The main shaft 3 is driven by the movable plate 2. A driving component 6 is installed inside the mounting box 1. A linkage component 7 is provided on the top of the mounting box 1. One end of the linkage component 7 is driven by the movable plate 2, and the other end is driven by the driving component 6.

[0036] Among them, the driving component 6 drives the movable plate 2 to move through the linkage component, the movable plate 2 drives the main shaft 3 to rotate, and the main shaft 3 drives the drawer seat to move through the first sector gear 5, so as to complete the automatic push-out of the drawer seat.

[0037] For example, the drive component 6 drives the linkage component 7 to work, the linkage component 7 drives the movable plate 2 to move, the movable plate 2 drives the main shaft 3 to rotate, the main shaft 3 drives the first sector gear 5 to rotate, and the first sector gear 5 drives the drawer seat to move, thereby completing the automatic pushing and pushing of the drawer seat.

[0038] As an optional embodiment, two limiting plates 8 are fixed to the top of the mounting box 1, and each of the limiting plates 8 is respectively attached to one side of the movable plate 2.

[0039] As an optional embodiment, a support plate 9 is fixedly mounted on the top of the limiting plate 8 in a vertical position toward the movable plate 2, and the side of the movable plate 2 is sleeved on the support plate 9.

[0040] For example, the support plate 9 and the limiting plate 8 are matched to make the movable plate 2 have a gap with the top of the mounting box 1, so as to avoid friction.

[0041] As an optional embodiment, the movable plate 2 comprises a horizontal plate 10 and a vertical plate 11, one end of the horizontal plate 10 is fixedly connected with one end of the vertical plate 11 in a perpendicular state, the vertical plate 11 is sleeved on the support plate 9, the vertical plate 11 is in transmission connection with the linkage 7, and the horizontal plate 10 is in transmission connection with the main shaft 3.

[0042] As an optional embodiment, a plurality of tooth grooves 12 are arranged on the horizontal plate 10, and at least one second sector gear 13 is fixedly arranged on the main shaft 3, and the second sector gear 13 is in meshing connection with the tooth groove 12.

[0043] For example, the linkage 7 drives the vertical plate 11 to move, the vertical plate 11 drives the horizontal plate 10 to move, the horizontal plate 10 drives the main shaft 3 to rotate through the cooperation of the tooth groove 12 and the second sector gear 13, so as to complete the pushing-out and pushing-in work of the drawer seat.

[0044] As an optional embodiment, a position switch 14 is fixedly arranged on the top of the mounting box 1, a push rod 15 is arranged on the working end of the position switch 14, one end of the push rod 15 extends in a perpendicular state and is fixedly connected with the vertical plate 11, the position switch 14 is in electrical connection with the driving part 6, the position switch 14 comprises a separation position, an experiment position and a connection position, the experiment position is located in the middle of the position switch 14, and the separation position and the connection position are respectively arranged close to one end of the position switch 14.

[0045] For example, as shown in the figure, Figure 4 The separation position is represented by A, the experiment position is represented by B, and the connection position is represented by C. When the vertical plate 11 drives the push rod 15 to move to the A, B and C positions, the push rod 15 will trigger the position switch 14 to switch from the normally open point to the normally closed point, and when the push rod 15 leaves the position, the switch returns.

[0046] As an optional embodiment, the linkage 7 comprises:

[0047] A threaded shaft 16 is arranged on the vertical plate 11 and is in threaded connection, and a bolt head 17 is fixedly arranged on one end of the threaded shaft 16 away from the main shaft 3;

[0048] A fixed plate 18 is fixedly arranged on the top of the mounting box 1, and the bolt head 17 penetrates through the fixed plate 18 and is in rotary connection;

[0049] A linkage gear 19 is arranged between the vertical plate 11 and the fixed plate 18, the linkage gear 19 is sleeved on the threaded shaft 16 and fixedly connected, and the linkage gear 19 is in transmission connection with the driving member 6.

[0050] As an optional embodiment, the driving member 6 comprises:

[0051] A reduction motor 20 is fixedly arranged in the inside of the mounting box 1, and a driving gear 21 is fixedly arranged on the output shaft of the reduction motor 20.

[0052] A driven gear 22 is rotatably arranged in the inside of the mounting box 1, and the driven gear 22 is in meshing connection with the driving gear 21 and the linkage gear 19.

[0053] For example, the driving gear 21 is driven to rotate by the reduction motor 20, the driven gear 22 is driven to rotate by the driving gear 21, the linkage gear 19 is driven to rotate by the driven gear 22, the threaded shaft 16 is driven to rotate by the linkage gear 19, the vertical plate 11 is driven to move by the threaded shaft 16 through the thread, the horizontal plate 10 is driven to move by the vertical plate 11, the second sector gear 13 is driven to rotate by the horizontal plate 10 through the tooth groove 12, the main shaft 3 is driven to rotate by the second sector gear 13, the first sector gear 5 is driven to rotate by the main shaft 3, and the drawer seat is driven to move by the first sector gear 5, so as to realize the electric operation of the drawer seat advancing and pushing out work. One end of the threaded shaft 16 is provided with a bolt head 17, the bolt head 17 is driven to rotate by a hexagonal wrench, the threaded shaft 16 is driven to rotate by the bolt head 17, and the vertical plate 11 is driven to move by the threaded shaft 16, so as to realize the manual operation of the drawer seat advancing and pushing out work.

[0054] As an optional embodiment, the mounting box 1 comprises a hollow arranged base 23 and a bottom plate 24, at least four reinforcing columns 25 are fixedly arranged in the inside of the base 23, and the bottom plate 24 is fixedly arranged on the top of the base 23 through cooperation of at least four screws 26 and the four reinforcing columns 25.

[0055] As Figure 5As shown, the main circuit lead supplies power to the entire system, and the remote RS485 communication relay KM3, KM4 coil is powered separately. Ensure that the circuit breaker body in the drawer seat is in the open state, at this time the circuit breaker 36 / 37 contact is in the closed state, the entire electric operation system can be used; if the circuit breaker body in the drawer seat is in the closed state, at this time the circuit breaker 36 / 37 contact is in the open state, in order to ensure safety, the electric operation system cannot be used at this time. Under the connection position of the circuit breaker body in the drawer seat in the open state, push the circuit breaker out, rotate the self-resetting knob SB1 to the right once, at this time SB1-2 is closed to make KM2: reverse contactor coil suction M: reduction motor 20 reverse rotation, at the same time SB1: knob self-resetting to the empty gear SB1-2 is disconnected, but because KM2: reverse contactor normally open contact and SB1-2 are in parallel relationship, KM2: reverse contactor normally open contact is converted to closed state when KM2: reverse contactor coil is suctioned, so that KM2: reverse contactor coil completes self-locking and continuously suction M: reduction motor 20 continuously reverses.

[0056] When the circuit breaker is pushed to the experimental position, 4 / 5 / 6: experimental position switch triggers conversion, 4 / 5: normally closed contact is converted to open state, at the same time KM2: reverse contactor coil stops suctioning due to loss of power and releases self-locking M: reduction motor 20 stops rotating, the circuit breaker is in the experimental position HL2, and the experimental position indicator flashes once. When the circuit breaker is in the experimental position, 5 / 6 normally open contact is in the closed state, and 5 / 4 normally closed contact is in the open state. Rotate the self-resetting knob SB1 to the right once again, at this time SB1-2 is closed to make KM2: reverse contactor coil suction M: reduction motor 20 reverse rotation, SB1: knob self-resetting to the empty gear SB1-2 is disconnected, at the same time KM2: reverse contactor normally open contact and SB1-2 are in parallel relationship, KM2: reverse contactor normally open contact is converted to closed state when KM2: reverse contactor is suctioned, so that KM2: reverse contactor coil completes self-locking and continuously suction M: reduction motor 20 continuously reverses.

[0057] When the circuit breaker is pushed to the disconnection position, 7 / 8 / 9: disconnection position switch triggers the conversion, 7 / 8: normally closed contact switches to the open state, while KM2: contactor coil stops absorbing due to loss of power to release the self-locking M: deceleration motor 20 stops rotating, the circuit breaker is in the disconnection position 8 / 9: normally open contact switches to the closed state HL1: disconnection position indicator light is always on. When the circuit breaker body is in the disconnection position in the drawer seat, push the circuit breaker in, rotate the self-reset knob SB1 to the left once, at this time SB1-1 is closed to make KM1: forward contactor coil absorb M: deceleration motor 20 rotates forward, while SB1: knob self-reset to the empty gear SB1-1 is disconnected, but because KM1: forward contactor normally open contact is in parallel with SB1-1, KM1: forward contactor normally open contact switches to the closed state when KM1: forward contactor coil is absorbed, so that KM1: forward contactor coil completes self-locking and continuously absorbs M: deceleration motor 20 continuously reverses.

[0058] When the circuit breaker is pushed to the experiment position, 4 / 5 / 6: experiment position switch triggers the conversion, 4 / 5: normally closed contact switches to the open state, while KM1: forward contactor coil stops absorbing due to loss of power to release the self-locking M: deceleration motor 20 stops rotating, the circuit breaker is in the experiment position HL2: experiment position indicator light flashes once. When the circuit breaker is in the experiment position, 5 / 6 normally open contact is in the closed state, and 5 / 4 normally closed contact is in the open state. Rotate the self-reset knob SB1 to the left once again, at this time SB1-1 is closed KM1: forward contactor coil absorbs M: deceleration motor 20 rotates forward, SB1: knob self-reset to the empty gear SB1-1 is disconnected, while KM1: forward contactor normally open contact is in parallel with SB1-1, KM1: forward contactor normally open contact switches to the closed state when KM1: forward contactor coil is absorbed, so that KM1: forward contactor coil completes self-locking and continuously absorbs M: deceleration motor 20 continuously reverses.

[0059] When the circuit breaker is pushed to the disconnection position, 7 / 8 / 9: disconnection position switch triggers the conversion, 7 / 8: normally closed contact switches to the open state, while KM1: forward contactor coil stops absorbing due to loss of power to release the self-locking M: deceleration motor 20 stops rotating, the circuit breaker is in the connection position 2 / 3: normally open contact switches to the closed state HL3: connection position indicator light is always on. If remote communication control mode is used, send a pulse absorption signal to RS485 communication relay KM3 or KM4 once using remote RS485 communication mode, KM3 or KM4 absorbs once to make the forward or reverse contactor coil absorb and self-lock, and the remaining action process is consistent with the above local knob operation.

[0060] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary, and is not intended to suggest that the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features among different embodiments can also be combined, and the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity. Any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic drawer seat of a low voltage frame circuit breaker comprising a mounting box (1), characterized in that, The top sliding connection of the mounting box (1) is provided with a movable plate (2), the top of the mounting box (1) is provided with a main shaft (3), two fixed rings (4) are sleeved on the main shaft (3), each fixed ring (4) is fixedly connected with the mounting box (1), the two ends of the main shaft (3) are fixedly provided with a first sector gear (5) for driving the drawer seat to move, the main shaft (3) is in transmission connection with the movable plate (2), the inside of the mounting box (1) is provided with a driving piece (6), the top of the mounting box (1) is provided with a linkage piece (7), one end of the linkage piece (7) is in transmission connection with the movable plate (2), and the other end is in transmission connection with the driving piece (6); Wherein, the driving piece (6) drives the movable plate (2) to move through the linkage assembly, the movable plate (2) drives the main shaft (3) to rotate, and the main shaft (3) drives the drawer seat to move through the first sector gear (5), so as to complete the work of automatically pushing and pushing out the drawer seat.

2. An automatic drawer seat for a low voltage frame circuit breaker according to claim 1, characterized in that, The top of the mounting box (1) is fixedly provided with two limiting plates (8), and each limiting plate (8) is attached to one side of the movable plate (2).

3. An automatic drawer seat for a low voltage frame circuit breaker according to claim 2, characterized in that, The top of the limiting plate (8) is fixedly provided with a support plate (9) in a vertical state towards the movable plate (2), and the side of the movable plate (2) is sleeved on the support plate (9).

4. An automatic drawer seat for a low voltage frame circuit breaker according to claim 3, characterized in that, The movable plate (2) comprises a horizontal plate (10) and a vertical plate (11), one end of the horizontal plate (10) is fixedly connected with one end of the vertical plate (11) in a vertical state, the side of the vertical plate (11) is sleeved on the support plate (9), the vertical plate (11) is in transmission connection with the linkage piece (7), and the horizontal plate (10) is in transmission connection with the main shaft (3).

5. An automatic drawer seat for a low voltage frame circuit breaker according to claim 4, characterized in that, A plurality of tooth grooves (12) are arranged on the horizontal plate (10), at least one second sector gear (13) is fixedly arranged on the main shaft (3), and the second sector gear (13) is in meshing connection with the tooth groove (12).

6. An automatic drawer seat for a low voltage frame circuit breaker according to claim 4, wherein, A position switch (14) is fixedly arranged on the top of the mounting box (1), a push rod (15) is attached to the working end of the position switch (14), one end of the push rod (15) extends in a vertical state and is fixedly connected with the vertical plate (11), the position switch (14) is electrically connected with the driving piece (6), the position switch (14) comprises a separation position, an experiment position and a connection position, the experiment position is located in the middle of the position switch (14), and the separation position and the connection position are respectively arranged near one end of the position switch (14).

7. An automatic drawer seat for a low voltage frame circuit breaker according to claim 4, wherein, The linkage piece (7) comprises: A threaded shaft (16) is threaded connected and penetrates through the vertical plate (11), and a bolt head (17) is fixedly arranged at the end of the threaded shaft (16) away from the main shaft (3); A fixed plate (18) is fixedly arranged on the top of the mounting box (1), and the bolt head (17) penetrates through the fixed plate (18) and is rotationally connected; A linkage gear (19) is arranged between the longitudinal plate (11) and the fixed plate (18), the linkage gear (19) is sleeved on the threaded shaft (16) and fixedly connected, and the linkage gear (19) is in transmission connection with the driving member (6).

8. An automatic drawer seat for a low voltage frame circuit breaker according to claim 7, characterized in that, The driving member (6) comprises: A reduction motor (20) is fixedly arranged in the inside of the mounting box (1), and a driving gear (21) is fixedly arranged on the output shaft of the reduction motor (20); A driven gear (22) is rotatably arranged in the inside of the mounting box (1), and the driven gear (22) is in meshing connection with the driving gear (21) and the linkage gear (19).

9. An automatic drawer seat for a low voltage frame circuit breaker according to claim 1, wherein, The mounting box (1) comprises a hollow base (23) and a bottom plate (24), at least four reinforcing columns (25) are fixedly arranged in the inside of the base (23), and the bottom plate (24) is fixedly arranged on the top of the base (23) by cooperation with the four reinforcing columns (25) through at least four screws (26).

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