A modular half-shaft release device

Abstract

The present invention provides a modular half-axis tripping device, which includes a closing mechanism and a tripping mechanism. Among them, the closing half-axis, the first needle bearing and the closing return spring are connected by means of shaft-hole fit; the closing bent plate is fixedly connected to the closing half-axis by screws; the closing pawl is connected to the rotating shaft and the first self-return torsion spring by means of shaft-hole fit; when the closing coil is operated, the top end of the closing coil pushes the closing bent plate to rotate together with the closing half-axis around the first needle bearing. Under the action of the first self-return torsion spring, the top end of the closing pawl is released from the notch of the closing half-axis, and the closing cam is released, so that the mechanism is closed; the half-axis tripping method provided by the present invention makes the switch closing and tripping more reliable, extends the switch action time, the components are less stressed, the service life is longer, and the needle bearing at the shaft end is more flexible and reliable in use, and the half-axis will not be stuck due to assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of power system equipment, and particularly relates to a modular half-axis tripping device. Background Art

[0002] A high-voltage circuit breaker (or high-voltage switch) can not only cut off or close the no-load current and load current in a high-voltage circuit, but also, when a system fault occurs, cut off the overload current and short-circuit current under the action of a relay protection device. It has a quite perfect arc extinguishing structure and sufficient current breaking capacity, and can be divided into: oil circuit breakers (multi-oil circuit breakers, less-oil circuit breakers), sulfur hexafluoride circuit breakers (SF6 circuit breakers), compressed air circuit breakers, vacuum circuit breakers, etc.

[0003] The high-voltage circuit breaker plays a control role in a high-voltage circuit and is one of the important electrical components in a high-voltage circuit. The circuit breaker is used to connect or disconnect a circuit during normal operation, and quickly disconnect the circuit under the action of a relay protection device in case of a fault, and reliably connect the short-circuit current under special circumstances (such as when automatically reclosing onto a faulty line). The high-voltage circuit breaker is a special electrical appliance for connecting or disconnecting a high-voltage circuit under normal or fault conditions.

[0004] Currently, the closing and opening bent plates of the half-axis release mechanism in the used vacuum circuit breaker are plastic parts, which are prone to breakage during long-term use; the transmission energy of the original mechanism is concentrated, the action time is short, which is not conducive to the arc extinguishing of the primary circuit arc chamber; and some parts are subjected to large forces and are prone to damage; both ends of the opening shaft of the mechanism adopt oil-free bearings. Due to structural limitations, during the shrinkage process of the oil-free bearing entering the shaft hole, it is easy to cause the phenomenon of jamming of the opening shaft. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a modular half-axis tripping device.

[0006] To achieve the above purpose, the present invention provides the following solution:

[0007] A modular half-axis tripping device includes a closing mechanism and an opening mechanism. The closing mechanism includes: a closing coil, a closing bent plate, a closing half-axis, a closing return spring, a first needle roller bearing, a closing pawl, a first self-return torsion spring, and a closing cam; the opening mechanism includes an opening coil, an opening bent plate, a second needle roller bearing, an opening return spring, an opening half-axis, an opening pawl, a second self-return torsion spring, a rotating shaft, and an opening crank arm.

[0008] The closing half shaft, the first needle bearing and the closing return spring are connected by a shaft-hole fitting method; the closing bent plate and the closing half shaft are fixedly connected by screws; the closing pawl is connected with the rotating shaft and the first self-return torsion spring by a shaft-hole fitting method; when the closing coil is operated, the top of the closing coil pushes the closing bent plate to rotate together with the closing half shaft around the first needle bearing, and under the action of the first self-return torsion spring, the top of the closing pawl is released from the notch of the closing half shaft, and the closing cam is released, so that the mechanism closes.

[0009] The opening half shaft, the second needle bearing and the opening return spring are connected by a shaft-hole fitting method; the opening bent plate and the opening half shaft are fixedly connected by screws; the opening pawl is connected with the rotating shaft and the second self-return torsion spring by a shaft-hole fitting method; when the opening coil is operated, the top of the opening coil pushes the opening bent plate to rotate together with the opening half shaft around the needle bearing, and under the action of the second self-return torsion spring, the top of the opening toggle arm is released from the notch of the opening half shaft, and the opening toggle arm is released, so that the mechanism opens.

[0010] Preferably, the closing bent plate is made of metal.

[0011] Preferably, the opening bent plate is made of metal.

[0012] Preferably, it further includes: a first mechanism housing; the closing coil, the closing bent plate, the closing half shaft, the closing return spring, the first needle bearing, the closing pawl, the first self-return torsion spring and the closing cam are all arranged in the first mechanism housing; the first mechanism housing is provided with a first positioning hole; the first positioning hole is used to fix the closing half shaft, the first needle bearing and the closing return spring.

[0013] Preferably, it further includes: a second mechanism housing; the opening coil, the opening bent plate, the second needle bearing, the opening return spring, the opening half shaft, the opening pawl, the second self-return torsion spring, the rotating shaft and the opening toggle arm are all arranged in the second mechanism housing; the second mechanism housing is provided with a second positioning hole; the second positioning hole is used to fix the opening half shaft, the second needle bearing and the opening return spring.

[0014] According to the specific embodiments provided by the present invention, the following technical effects of the present invention are disclosed:

[0015] The present invention provides a modular half - shaft tripping device, which includes a closing mechanism and a tripping mechanism. The closing mechanism includes: a closing coil, a closing bent plate, a closing half - shaft, a closing return spring, a first needle bearing, a closing pawl, a first self - resetting torsion spring, and a closing cam; the tripping mechanism includes a tripping coil, a tripping bent plate, a second needle bearing, a tripping return spring, a tripping half - shaft, a tripping pawl, a second self - resetting torsion spring, a rotating shaft, and a tripping toggle arm; the closing half - shaft, the first needle bearing, and the closing return spring are connected by an axial hole fitting method; the closing bent plate and the closing half - shaft are fixedly connected by screws; the closing pawl is connected with the rotating shaft and the first self - resetting torsion spring by an axial hole fitting method; when the closing coil is operated, the top of the closing coil pushes the closing bent plate to rotate together with the closing half - shaft around the first needle bearing. Under the action of the first self - resetting torsion spring, the top of the closing pawl is released from the notch of the closing half - shaft, and the closing cam is released, thus the mechanism is closed; the tripping half - shaft, the second needle bearing, and the tripping return spring are connected by an axial hole fitting method; the tripping bent plate and the tripping half - shaft are fixedly connected by screws; the tripping pawl is connected with the rotating shaft and the second self - resetting torsion spring by an axial hole fitting method; when the tripping coil is operated, the top of the tripping coil pushes the tripping bent plate to rotate together with the tripping half - shaft around the needle bearing. Under the action of the second self - resetting torsion spring, the top of the tripping toggle arm is released from the notch of the tripping half - shaft, and the tripping toggle arm is released, thus the mechanism is tripped. The half - shaft tripping method provided by the present invention makes the closing and tripping of the switch more reliable, extends the operating time of the switch, reduces the force on components, prolongs the service life, and the needle bearing at the shaft end is more flexible and reliable, and the half - shaft will not be stuck due to assembly. In a specific embodiment, it is disclosed that the closing and tripping bent plates made of metal have a longer service life and more reliable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the closing mechanism provided by the embodiment of the present invention;

[0018] Figure 2 It is a schematic structural diagram of the tripping mechanism provided by the embodiment of the present invention;

[0019] Description of the reference numerals:

[0020] H1 - Closing coil; H2 - Closing bent plate; H3 - Closing half shaft; H4 - Closing reset spring; H5 - First needle roller bearing; H6 - Closing pawl; H7 - First self - resetting torsion spring; H8 - Closing cam; F1 - Tripping coil; F2 - Tripping bent plate; F3 - Second needle roller bearing; F4 - Tripping reset spring; F5 - Tripping half shaft; F6 - Tripping pawl; F7 - Second self - resetting torsion spring; F8 - Rotating shaft; F9 - Tripping crank arm. Detailed implementation manners

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase appears in various positions in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0023] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the present application and the accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non - exclusive inclusion. For example, a series of steps, processes, methods, etc. included do not limit to the listed steps, but optionally further include unlisted steps, or optionally further include other step elements inherent to these processes, methods, products or devices.

[0024] The object of the present invention is to provide a modular half - shaft tripping device, which can make the switch closing and tripping more reliable, extend the switch operation time, reduce the force on components, have a longer service life, and make the needle roller bearing at the shaft end more flexible and reliable, and will not cause the half - shaft to jam due to assembly.

[0025] To make the above - mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0026] Refer to Figure 1 and Figure 2 , the working principle of this embodiment is as follows:

[0027] When operating the closing coil H1, the top of the coil pushes the closing bent plate H2, causing it to rotate together with the closing half shaft H3 around the needle roller bearing H5. Under the action of the force of the first self-resetting torsion spring H7, the top of the closing pawl H6 is released from the notch of the closing half shaft H3. Further, due to the rotation of the closing pawl H6, the closing cam H8 is released, and thus the mechanism closes. Under the action of the closing reset spring H4, the components return to their original positions.

[0028] The closing coil H1 is fixed to the mechanism housing by screws; the closing half shaft H3, the first needle roller bearing H5, and the closing reset spring H4 are connected to the holes on the mechanism housing by means of shaft-hole fitting, and their positions are restricted by shaft retaining rings; the closing bent plate H2 is fixedly connected to the closing half shaft H3 by screws; the closing pawl H6 is connected to the rotating shaft F8 and the first self-resetting torsion spring H7 by means of shaft-hole fitting.

[0029] When operating the opening coil F1, the top of the coil pushes the opening bent plate F2 (metal), causing it to rotate together with the opening half shaft F5 around the second needle roller bearing F3. Under the action of the force of the second self-resetting torsion spring F7, the top of the opening toggle arm F9 is released from the notch of the opening half shaft F5. Further, due to the rotation of the opening toggle arm F9, the opening toggle arm F9 is released, and thus the mechanism opens. Under the action of the opening reset spring F4, the components return to their original positions.

[0030] The opening coil F1 is fixed to the mechanism housing by screws; the opening half shaft F5, the second needle roller bearing F3, and the opening reset spring F4 are connected to the holes on the mechanism housing by means of shaft-hole fitting, and their positions are restricted by shaft retaining rings; the opening bent plate F2 is fixedly connected to the opening half shaft F5 by screws; the opening pawl F6 is connected to the rotating shaft F8 and the second self-resetting torsion spring F7 by means of shaft-hole fitting.

[0031] The beneficial effects of the present invention are as follows:

[0032] 1. The opening and closing bent plates made of metal provided by the present invention have a longer service life and more reliable performance.

[0033] 2. The half shaft tripping method provided by the present invention makes the opening and closing of the switch more reliable, extends the switch operation time, reduces the force on the components, and has a longer service life.

[0034] 3. The needle roller bearings at the shaft ends provided by the present invention are more flexible and reliable in use, and the half shafts will not be stuck due to assembly.

[0035] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0036] In this article, specific examples are used to elaborate on the principles and implementation modes of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation modes and application scopes. To sum up, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A modular half - shaft release device, comprising a closing mechanism and a tripping mechanism, characterized in that, The closing mechanism includes: a closing coil, a closing bent plate, a closing half shaft, a closing return spring, a first needle bearing, a closing pawl, a first self - resetting torsion spring, and a closing cam; the opening mechanism includes an opening coil, an opening bent plate, a second needle bearing, an opening return spring, an opening half shaft, an opening pawl, a second self - resetting torsion spring, a rotating shaft, and an opening crank arm; The closing half shaft, the first needle bearing, and the closing return spring are connected by means of shaft - hole fitting; the closing bent plate is fixedly connected to the closing half shaft by screws; the closing pawl is connected to the rotating shaft and the first self - resetting torsion spring by means of shaft - hole fitting; when the closing coil is operated, the top end of the closing coil pushes the closing bent plate to rotate together with the closing half shaft around the first needle bearing, and under the action of the first self - resetting torsion spring, the top end of the closing pawl is released from the notch of the closing half shaft, and the closing cam is released, thus the mechanism closes; The opening half shaft, the second needle bearing, and the opening return spring are connected by means of shaft - hole fitting; the opening bent plate is fixedly connected to the opening half shaft by screws; the opening pawl, the rotating shaft, and the second self - resetting torsion spring are connected by means of shaft - hole fitting; when the opening coil is operated, the top end of the opening coil pushes the opening bent plate to rotate together with the opening half shaft around the needle bearing, and under the action of the second self - resetting torsion spring, the top end of the opening crank arm is released from the notch of the opening half shaft, and the opening crank arm is released, thus the mechanism opens; It further includes: a first mechanism housing; the closing coil, the closing bent plate, the closing half shaft, the closing return spring, the first needle bearing, the closing pawl, the first self - resetting torsion spring, and the closing cam are all arranged in the first mechanism housing; the first mechanism housing is provided with a first positioning hole; the first positioning hole is used to fix the closing half shaft, the first needle bearing, and the closing return spring; It further includes: a second mechanism housing; the opening coil, the opening bent plate, the second needle bearing, the opening return spring, the opening half shaft, the opening pawl, the second self - resetting torsion spring, the rotating shaft, and the opening crank arm are all arranged in the second mechanism housing; the second mechanism housing is provided with a second positioning hole; the second positioning hole is used to fix the opening half shaft, the second needle bearing, and the opening return spring.

2. The modular half shaft release device according to claim 1, wherein, The closing bent plate is made of metal.

3. The modular half shaft release device according to claim 1, characterized in that The opening bent plate is made of metal.

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