Novel manual energy storage mechanism for CTB mechanism

Abstract

The utility model relates to a novel manual energy storage mechanism for a CTB mechanism, which comprises a circuit breaker mechanism arranged in a case, and an energy storage shaft of the circuit breaker mechanism is horizontally arranged in the case; the gear is arranged on the energy storage shaft and is suitable for driving the energy storage shaft to rotate unidirectionally; the rack is vertically arranged in the case and is suitable for performing upward elastic reset; the upper portion of the rack is meshed with the gear, an operation portion is arranged at the lower end of the rack, a penetrating hole is formed in the machine box bottom plate, and the operation portion extends out of the machine box bottom plate from the penetrating hole. During manual energy storage, an operator pulls down the rack in a reciprocating manner through the operation part to drive the gear to rotate unidirectionally, so that the energy storage shaft is driven to rotate unidirectionally, and the energy storage spring of the circuit breaker mechanism is stretched to store energy. And a manual operation mode is changed from side operation of the case to bottom operation of the case, so that the possibility that rainwater enters the case body is greatly reduced, and the protection grade and reliability of the switch are greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit breaker operating mechanisms, in particular to a novel manual energy storage mechanism for a CTB mechanism. Background Art

[0002] With the advancement of technology, the load of the power grid has increased rapidly, which has put forward higher operating requirements for medium-voltage circuit breakers in the power grid. The CTB mechanism used in the original medium-voltage pole-mounted circuit breaker ZW32, whose manual energy storage method was designed nearly 20 years ago, has gradually failed to meet users' requirements for circuit breaker operation and protection level improvement.

[0003] The existing CTB mechanism is built into the ZW32 circuit breaker mechanism box, and its manual energy storage operating handle is placed outside the box. The two realize the manual energy storage function through the through holes, mounting seats, connecting shafts, sealing rings, reset springs and other parts on the side of the box. The manual energy storage operating shaft in the original CTB mechanism is set along the direction of the energy storage axis, and the manual energy storage operating shaft extends from the side of the circuit breaker chassis. Because ZW32 is an outdoor product, after experiencing high temperature, low temperature, salt spray, rain and other environmental influences, the sealing ring on the side of the box is very easy to break and deform, causing seal failure and rainwater entering the box, resulting in failure of the mechanical and electrical parts of the CTB mechanism, and the circuit breaker cannot operate normally, affecting the safety of the power grid. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a novel manual energy storage mechanism for a CTB mechanism, and to solve the problem that the energy storage mechanism of a traditional CTB mechanism is designed unreasonably in a circuit breaker, resulting in low protection level and reliability of the circuit breaker.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A new manual energy storage mechanism for a CTB mechanism is provided, comprising:

[0007] A circuit breaker mechanism is arranged in the chassis, and an energy storage axis of the circuit breaker mechanism is arranged horizontally in the chassis;

[0008] A gear, which is disposed on the energy storage shaft and is suitable for driving the energy storage shaft to rotate in one direction; and

[0009] A rack, the rack is vertically arranged in the chassis and is suitable for elastically resetting upward; the upper portion of the rack is meshed with the gear, the lower end of the rack is provided with an operating portion, a through hole is provided on the chassis bottom plate, and the operating portion extends out of the chassis bottom plate from the through hole;

[0010] During manual energy storage, the operator pulls down the rack reciprocatingly through the operating part, driving the gear to rotate in one direction, thereby driving the energy storage shaft to rotate in one direction, so that the energy storage spring of the circuit breaker mechanism is stretched and stored.

[0011] Furthermore, the rack includes a tooth portion and a rod portion, the tooth portion meshes with the gear, the rod portion is outer-circuited with a spring, a stop pin is provided at the lower end of the rod portion, the lower end of the spring abuts against the stop pin, and the upper end of the spring abuts against the lower end of the tooth portion;

[0012] When the rack moves downward, the rod and the stop pin extend out of the through hole, and the lower end of the spring abuts against the bottom of the chassis, thereby compressing the spring.

[0013] Furthermore, the operating part includes a pull rope and a pull ring. The pull rope passes through a through hole in the bottom plate of the chassis, and its upper end is connected to the lower end of the rack, and its lower end is connected to the pull ring.

[0014] Furthermore, a one-way bearing is arranged between the gear and the energy storage shaft.

[0015] Furthermore, it also includes a housing, which is fixedly arranged in the chassis;

[0016] The gear, rack and spring are integrated in the housing.

[0017] The beneficial effects of the utility model are:

[0018] The new CTB mechanism of the utility model uses a manual energy storage mechanism, which changes the manual operation mode from the side operation of the chassis to the bottom operation of the chassis, greatly reducing the possibility of rainwater entering the box body and greatly improving the protection level and reliability of the switch.

[0019] The manual energy storage mechanism utilizes the space on the side of the CTB mechanism, does not affect the arrangement of the original mechanism components, and does not require major adjustments to the original CTB mechanism.

[0020] The manual energy storage mechanism of the utility model can keep the operating handle away from the high-voltage live end during manual energy storage, thereby providing safety protection for the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of a manual energy storage mechanism for a novel CTB mechanism of the utility model;

[0023] Among them, 1. bottom plate, 2. circuit breaker mechanism, 21. energy storage shaft, 3. gear, 4. rack, 41. tooth part, 42. rod part, 5. spring, 61. stop pin, 62. pull rope, 63. pull ring, 7. shell. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The present application provides a new manual energy storage mechanism for a CTB mechanism, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0026] In order to solve the technical problem that the energy storage mechanism of the CTB mechanism in the prior art is not reasonably designed in the circuit breaker, resulting in low protection level and reliability of the circuit breaker, an embodiment of the present application provides a new manual energy storage mechanism for the CTB mechanism, which is described in detail below.

[0027] like Figure 1 As shown, a new manual energy storage mechanism for CTB mechanism includes

[0028] A circuit breaker mechanism 2 is arranged in the chassis, and an energy storage shaft 21 of the circuit breaker mechanism 2 is arranged horizontally in the chassis;

[0029] A gear 3, wherein the gear 3 is disposed on the energy storage shaft 21 and is suitable for driving the energy storage shaft 21 to rotate in one direction; and

[0030] The rack 4 is vertically arranged in the chassis and is suitable for elastically resetting upward; the upper portion of the rack 4 is meshed with the gear 3, and the lower end of the rack 4 is provided with an operating portion, and a through hole is provided on the chassis bottom plate 1, and the operating portion extends out of the chassis bottom plate 1 through the through hole;

[0031] During manual energy storage, the operator pulls down the rack 4 back and forth through the operating part to drive the gear 3 to rotate in one direction, thereby driving the energy storage shaft 21 to rotate in one direction, so that the energy storage spring of the circuit breaker mechanism 2 is stretched and stored.

[0032] In this embodiment, a guide structure is arranged between the rack 4 and the chassis to guide the rack 4 to move up and down stably.

[0033] In this embodiment, the energy storage shaft 21 is arranged in the front-to-back direction in the chassis.

[0034] Specifically, as an optional implementation in this embodiment, the rack 4 includes a tooth portion 41 and a rod portion 42, the tooth portion 41 is meshed with the gear 3, the rod portion 42 is outer-circuited with a spring 5, a stop pin 61 is provided at the lower end of the rod portion 42, the lower end of the spring 5 abuts against the stop pin 61, and the upper end of the spring 5 abuts against the lower end of the tooth portion 41; when the rack 4 moves downward, the rod portion 42 and the stop pin 61 extend out from the through hole, and the lower end of the spring 5 abuts against the bottom of the chassis, thereby compressing the spring 5.

[0035] The rack 4 is a strip-shaped body, and the tooth portion 41 is a plurality of tooth openings formed on one side of the strip-shaped body, and the tooth openings are meshed with the gear 3 .

[0036] During operation, the rack 4 moves down to drive the gear 3 to rotate clockwise. At this time, the gear 3 can drive the energy storage shaft 21 to rotate for energy storage. When the rack 4 moves up, the gear 3 rotates counterclockwise. At this time, the one-way bearing cannot drive the energy storage shaft 21 to reverse.

[0037] Specifically, as an optional implementation in this embodiment, the operating part includes a pull rope 62 and a pull ring 63. The pull rope 62 passes through the through hole of the chassis bottom plate 1, and its upper end is connected to the lower end of the rack 4, and its lower end is connected to the pull ring 63.

[0038] The operating part of this embodiment is simple in material and easy to operate.

[0039] In this embodiment, a one-way bearing is arranged between the gear 3 and the energy storage shaft 21. In this embodiment, because the one-way bearing is adopted, there is no interference with the original electric energy storage system during manual energy storage.

[0040] Specifically, as an optional implementation in this embodiment, it also includes a shell 7, which is fixedly arranged in the chassis; the gear 3, the rack 4 and the spring 5 are integrated in the shell 7.

[0041] The housing 7 is installed on the side panel of the circuit breaker as a support. During actual operation, the gear 3, gear 3 and spring 5 can be integrated in the housing 7 to make a module assembly. The module assembly can be assembled in advance. Lubricating oil can be added to the rack 4 and gear 3 in the housing 7 for lubrication to reduce wear and jamming, and at the same time prevent dust.

[0042] When it is necessary to install a manual energy storage mechanism, the module assembly can be directly installed on the side panel of the circuit breaker.

[0043] When the CTB mechanism needs to be manually charged, the staff uses the insulating operating rod to reciprocate downwards to pull the pull ring 63 located below the bottom plate 1 of the circuit breaker chassis, driving the rack 4 to move downwards, compressing the spring 5 while causing the gear 3 and the one-way bearing to rotate clockwise, driving the energy storage shaft 21 inside the circuit breaker mechanism 2 to rotate, causing the energy storage spring to stretch and store energy; because the one-way bearing is used, manual energy storage does not interfere with the original electric energy storage system. When the manual energy storage is completed, the insulating operating rod is removed, and the rack 4 and the pull ring 63 are automatically reset under the action of the spring 5, preparing for the next manual energy storage.

[0044] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0045] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0048] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0049] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0050] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A new manual energy storage mechanism for a CTB mechanism, characterized in that: include A circuit breaker mechanism (2) is arranged in a chassis, and an energy storage shaft (21) of the circuit breaker mechanism (2) is arranged horizontally in the chassis; a gear (3), wherein the gear (3) is arranged on the energy storage shaft (21) and is suitable for driving the energy storage shaft (21) to rotate in one direction; and A rack (4), the rack (4) being arranged vertically in the chassis and being adapted to be elastically reset upward; the upper portion of the rack (4) is meshed with the gear (3), the lower end of the rack (4) is provided with an operating portion, a through hole is provided on the bottom plate (1) of the chassis, and the operating portion extends out of the bottom plate (1) of the chassis through the through hole; When manually storing energy, the operator pulls down the rack (4) reciprocatingly through the operating part, driving the gear (3) to rotate unidirectionally, thereby driving the energy storage shaft (21) to rotate unidirectionally, so that the energy storage spring of the circuit breaker mechanism (2) is stretched and stores energy.

2. The new manual energy storage mechanism for CTB mechanism according to claim 1 is characterized in that: The rack (4) comprises a tooth portion (41) and a rod portion (42), the tooth portion (41) meshes with the gear (3), the rod portion (42) is outer-circuited with a spring (5), a stop pin (61) is provided at the lower end of the rod portion (42), the lower end of the spring (5) abuts against the stop pin (61), and the upper end of the spring (5) abuts against the lower end of the tooth portion (41); When the rack (4) moves downward, the rod (42) and the stop pin (61) extend out of the through hole, and the lower end of the spring (5) abuts against the bottom of the chassis, thereby compressing the spring (5).

3. The new manual energy storage mechanism for CTB mechanism according to claim 1 or 2, characterized in that: The operating part comprises a pull rope (62) and a pull ring (63); the pull rope (62) passes through a hole in the chassis bottom plate (1); its upper end is connected to the lower end of the rack (4); and its lower end is connected to the pull ring (63).

4. The new manual energy storage mechanism for CTB mechanism according to claim 1 is characterized in that: A one-way bearing is arranged between the gear (3) and the energy storage shaft (21).

5. The new manual energy storage mechanism for CTB mechanism according to claim 2 is characterized in that: It also includes a housing (7), wherein the housing (7) is fixedly arranged in the chassis; The gear (3), rack (4) and spring (5) are integrated in the housing (7).

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