Knob type mechanism of explosion-proof circuit breaker
By designing a rotary mechanism for explosion-proof circuit breakers, the problems of high replacement costs and circuit breaker obsolescence were solved, enabling safe adaptation and normal use of push-rod type circuit breakers, reducing replacement costs and avoiding obsolescence.
Patent Information
- Application Number
- CN202520201384.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Replacing push-rod type circuit breakers with explosion-proof knob type circuit breakers is costly and results in a large number of non-faulty circuit breakers being discarded.
A rotary mechanism for an explosion-proof circuit breaker was designed, comprising a drive shaft, drive gears, a drive plate, and a lever. Through a spacing adjustment assembly and a lever locking assembly, it enables adaptation and control of the push rod type circuit breaker, preventing explosions caused by electric arcs.
This reduces replacement costs, avoids the disposal of non-faulty circuit breakers, and ensures the safe adaptation and normal use of push rod circuit breakers.
Smart Images
Figure CN223884373U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to circuit breaker technical field, concretely is a kind of explosion-proof circuit breaker knob formula mechanism. BACKGROUND
[0002] Explosion-proof circuit breaker refers to the dangerous place for combustible gas and dust, can prevent the arc, spark and high temperature that may be produced inside explosion-proof circuit breaker, and the combustible gas and dust in surrounding environment are ignited, so as to reach the equipment of explosion-proof requirement, and different combustible gas mixture environment has different requirements for the explosion-proof grade and explosion-proof form of explosion-proof lamp.
[0003] At present, many thermal power plants, flour mills and other flammable and explosive areas use ordinary push rod type circuit breaker, but push rod type circuit breaker has limited protection measures, and arc may be generated when pushing the switch, and then gas deflagration or dust explosion is caused, so this type of push rod type circuit breaker needs to be replaced.
[0004] But directly replacing all push rod type circuit breakers with explosion-proof knob body type circuit breakers not only has high cost, but also the replaced push rod type circuit breakers usually will not be used again, and a large number of non-fault push rod type circuit breakers will be discarded. UTILITY MODEL CONTENTS
[0005] The utility model aims at: provide a kind of explosion-proof circuit breaker knob formula mechanism, to solve the problem of high cost and large amount of non-fault circuit breaker discarded caused by directly replacing push rod type circuit breaker in the background art.
[0006] To achieve the above purpose, the utility model adopts the following technical solutions:
[0007] The utility model provides a kind of explosion-proof circuit breaker knob formula mechanism, including circuit breaker body, the circuit breaker body is equipped with push rod type switch, further including the explosion-proof shell of assembling circuit breaker body and cover, the cover is equipped with knob mechanism, the knob mechanism includes transmission shaft, one end of the transmission shaft is fixedly installed with the knob body located outside cover, the other end is fixedly installed with first transmission gear, the knob mechanism further includes transmission plate, first tooth slot adapted with first transmission gear is opened on the side wall of transmission plate, the side wall of one side of transmission plate relative to transmission shaft is equipped with the lever device of push rod type switch, the lever device includes the first paddle and second paddle symmetrically arranged on transmission plate.
[0008] Further, the knob mechanism further comprises a distance adjustment assembly, the transmission plate is provided with a mounting seat on the side wall of the circuit breaker body, a second mounting groove is formed in the mounting seat, the distance adjustment assembly comprises a second transmission gear movably mounted in the second mounting groove, the first and second knobs are symmetrically mounted on two sides of the second transmission gear, the first and second knobs are respectively provided with a first transmission rod and a second transmission rod extending to the inner side of the second mounting groove on the side wall adjacent to the first and second knobs, and the side wall adjacent to the first and second transmission rods is respectively provided with a second gear slot and a third gear slot matched with the second transmission gear.
[0009] Further, the mounting seat is provided with a knob locking assembly, the knob locking assembly comprises a U-shaped locking rod, the mounting seat is symmetrically provided with a locking hole on the side wall of the U-shaped locking rod, the two ends of the U-shaped locking rod extend to the inner side of the second mounting groove through the locking holes respectively, the second transmission rod is provided with a fourth gear slot on the side wall of one side of the U-shaped locking rod, and one end of the U-shaped locking rod is provided with a first locking tongue matched with the second gear slot and the other end is provided with a second locking tongue matched with the fourth gear slot.
[0010] Further, the U-shaped locking rod and the mounting seat are provided with a reset spring.
[0011] Further, the U-shaped locking rod is provided with a hand-held round rod on one side relative to the mounting seat.
[0012] Further, the explosion-proof shell and the cover are made of insulating plastic.
[0013] Further, the explosion-proof shell is provided with a first mounting groove, and the circuit breaker body is fixedly mounted in the first mounting groove.
[0014] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:
[0015] The utility model provides a kind of anti-explosion circuit breaker knob formula mechanism, when staff dismounts existing push rod type circuit breaker, first circuit breaker body is fixedly installed on the mounting frame of first assembly groove inside by cross screw, subsequently pinch hold handheld round rod and pull in the direction of moving away from assembly seat, drive first lock tongue and second lock tongue respectively separate from second tooth groove and fourth tooth groove, first paddle and second paddle are unlocked, adjust first paddle upwards, by the cooperation of second tooth groove and third tooth groove of meshing of second transmission gear, drive second paddle to move down, to adjust the interval of first paddle and second paddle, after interval and the push rod type switch on circuit breaker body adapt, release handheld round rod, U type lock rod moves in the direction of assembly seat under the action of reset spring, drive first lock tongue and second lock tongue respectively insert into second tooth groove and fourth tooth groove, lock first paddle and second paddle, set interval adjusting assembly cooperation paddle locking assembly, when staff installs push rod type circuit breaker, the interval of two paddles of paddle ware is adjusted according to the size of its push rod type switch, to better adapt to push rod type circuit breaker of different sizes, subsequently cover and explosion-proof shell are locked by internal hexagon screw nut, rotate knob body, drive first transmission gear to rotate by transmission shaft, first transmission gear drives transmission plate to move along vertical direction by meshing first tooth groove, to drive paddle ware to move along vertical direction and push rod type switch, set explosion-proof shell cooperation cover plate assembly existing push rod type circuit breaker, open and close push rod type circuit breaker by knob mechanism control, avoid push rod type circuit breaker to be exposed to outside, to avoid the intersection of electric arc generated when push rod type circuit breaker opens and closes and external flammable and explosive factors leads to explosion, and still avoid the abandonment of non-fault push rod type circuit breaker. BRIEF DESCRIPTION OF DRAWINGS
[0016] The drawings accompanying the specification of this utility model form a part of the utility model and serve to provide further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions serve to explain the utility model, and do not constitute an improper limitation on the utility model.
[0017] In the drawings:
[0018] Figure 1 The structure schematic view of explosion-proof shell and cover plate provided by the utility model is shown in the figure.
[0019] Figure 2 The structure schematic view of explosion-proof shell inside provided by the utility model is shown in the figure.
[0020] Figure 3 The structure schematic view of knob mechanism provided by the utility model is shown in the figure.
[0021] Figure 4 The structure schematic view of interval adjusting assembly provided by the utility model is shown in the figure.
[0022] Figure 5The sectional structure schematic view of the distance adjusting assembly is provided in the utility model.
[0023] Figure 6 The example view of assembling the large-size push rod type circuit breaker is provided in the utility model.
[0024] Figure 7 The example view of assembling the small-size push rod type circuit breaker is provided in the utility model.
[0025] In the drawing,
[0026] 100, cover;
[0027] 110, explosion-proof shell; 111, first assembly groove; 112, push rod type switch;
[0028] 200, knob mechanism;
[0029] 210, knob body; 220, transmission shaft; 230, first transmission gear; 240, transmission plate; 241, first tooth groove; 242, waist groove; 243, positioning pin; 250, first shifting piece; 251, first transmission rod; 252, second tooth groove; 260, second shifting piece; 261, second transmission rod; 262, third tooth groove; 263, fourth tooth groove; 270, assembly seat; 280, second transmission gear; 281, second assembly groove;
[0030] 310, reset spring; 320, hand-held round rod; 330, U-shaped lock rod; 331, first lock tongue; 332, second lock tongue. DETAILED DESCRIPTION
[0031] In order to make the personnel in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person of ordinary skill in the art without creative labor should belong to the protection scope of the present application.
[0032] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and the above-described accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a list of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to such processes, methods, products or devices.
[0033] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0034] Also, in addition to indicating the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.
[0035] In addition, the terms "mount", "set", "provided with", "connected", "connected", "sleeved" should be broadly understood. For example, it can be a fixed connection, a detachable connection, or a monolithic structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0036] Please refer to Figures 1 to 4The utility model provides a kind of anti-explosion circuit breaker knob formula mechanism, including circuit breaker body, circuit breaker body is equipped with push rod type switch 112, further including the explosion-proof housing 110 of assembling circuit breaker body and cover 100, first assembly groove 111 is opened in explosion-proof housing 110, circuit breaker body is fixedly assembled in first assembly groove 111, mounting bracket of plastic material and with threaded hole is installed in first assembly groove 111, so that staff will be fixedly installed in mounting bracket by cross screw circuit breaker body, cover 100 is equipped with knob mechanism 200, knob mechanism 200 includes transmission shaft 220, transmission shaft 220 one end is fixedly installed with the knob body 210 located in the outside of cover 100, the other end is fixedly installed with first transmission gear 230, knob mechanism 200 further includes transmission plate 240, first tooth slot 241 of being adapted with first transmission gear 230 is opened in the side wall of transmission plate 240, the side wall of transmission plate 240 relative to transmission shaft 220 side is equipped with the lever ware of the lever ware of push rod type switch 112, lever ware includes first paddle 250 and second paddle 260 being symmetrically arranged on transmission plate 240, when staff needs to adjust the opening and closing of circuit breaker body, rotate knob body 210, first transmission gear 230 is rotated by transmission shaft 220, first transmission gear 230 drives transmission plate 240 to move along vertical direction by meshing first tooth slot 241, in turn drive paddle ware to move along vertical direction and push rod type switch 112, to control the opening and closing of circuit breaker body.
[0037] But the size of push rod type circuit breaker used in dangerous place such as thermal power plant is not unified, and the size of push rod type switch 112 has great difference, if the distance between paddle ware is too large, when assembling small push rod type switch 112 circuit breaker body, the opening and closing of circuit breaker body cannot be accurately controlled, if the distance between paddle ware is too small, when assembling circuit breaker body with large push rod type switch 112, it is easy to be stuck, and affect the tripping protection function of circuit breaker body. Figures 5 to 7The knob mechanism 200 further comprises a spacing adjusting assembly, the transmission plate 240 is provided with an assembly seat 270 on the side wall facing the circuit breaker body, a second assembly groove 281 is formed in the assembly seat 270, the spacing adjusting assembly comprises a second transmission gear 280 movably assembled in the second assembly groove 281, the first toggle plate 250 and the second toggle plate 260 are symmetrically assembled on the two sides of the second transmission gear 280, the first toggle plate 250 and the second toggle plate 260 are respectively provided with a first transmission rod 251 and a second transmission rod 261 extending to the inner side of the second assembly groove 281 on the adjacent sides, and the side walls on the adjacent sides of the first transmission rod 251 and the second transmission rod 261 are respectively provided with a second tooth groove 252 and a third tooth groove 262 matched with the second transmission gear 280; when the size of the push rod type switch 112 on the assembled circuit breaker body has a large difference, the position of the first toggle plate 250 can be adjusted upwards, the second transmission gear 280 meshing with the second tooth groove 252 on the first transmission rod 251 is driven to rotate, the second transmission gear 280 drives the second toggle plate 260 to move downwards synchronously through the second transmission rod 261 meshing with the second transmission gear 280, so that the first toggle plate 250 and the second toggle plate 260 keep synchronous convergence or divergence, the center of which always keeps consistent with the axis of the second transmission gear 280, and the switch on the circuit breaker body is aligned with the toggle lever when the circuit breaker body is assembled.
[0038] Preferably, as Figures 3 to 5 As shown, the assembly seat 270 is provided with a toggle plate locking assembly, the toggle plate locking assembly comprises a U-shaped lock rod 330, lock holes are symmetrically formed in the side walls of the assembly seat 270 facing the U-shaped lock rod 330, the two ends of the U-shaped lock rod 330 extend to the inner side of the second assembly groove 281 through the respective lock holes, the side wall on one side of the second transmission rod 261 facing the U-shaped lock rod 330 is provided with a fourth tooth groove 263, one end of the U-shaped lock rod 330 is provided with a first lock tongue 331 matched with the second tooth groove 252, and the other end is provided with a second lock tongue 332 matched with the fourth tooth groove 263, a reset spring 310 is arranged between the U-shaped lock rod 330 and the assembly seat 270, and a handheld round rod 320 is arranged on one side of the U-shaped lock rod 330 relative to the assembly seat 270; when the spacing of the toggle plate device is adjusted, the handheld round rod 320 is pinched and pulled away from the assembly seat 270, so that the first lock tongue 331 and the second lock tongue 332 are respectively separated from the second tooth groove 252 and the fourth tooth groove 263, at this time, the first toggle plate 250 and the second toggle plate 260 are unlocked, and the spacing of the toggle plate device can be adjusted, after the spacing is adjusted to the matched spacing, the handheld round rod 320 is released, the U-shaped lock rod 330 moves to the assembly seat 270 under the action of the reset spring 310, the first lock tongue 331 and the second lock tongue 332 are respectively inserted into the second tooth groove 252 and the fourth tooth groove 263, and the first toggle plate 250 and the second toggle plate 260 are locked.
[0039] As Figure 3As shown, to ensure the dialing plate moves the push rod type switch 112 along the vertical direction, the transmission plate 240 is provided with a waist groove 242, and the waist groove 242 is provided with a positioning pin 243 along the vertical direction, and the other end of the positioning pin 243 is fixedly connected to the inner wall of the cover 100.
[0040] Preferably, the explosion-proof shell 110 and the cover 100 are made of insulating plastic, which has low cost and light weight, and is convenient for workers to assemble the circuit breaker body.
[0041] Working principle: when workers disassemble the existing push rod type circuit breaker, first, the circuit breaker body is fixedly installed on the mounting frame on the inner side of the first assembly groove 111 through the cross screw, then the hand-held round rod 320 is pinched and pulled away from the assembly seat 270, the first lock tongue 331 and the second lock tongue 332 are driven to be separated from the second tooth groove 252 and the fourth tooth groove 263 respectively, at this time, the first dialing plate 250 and the second dialing plate 260 are unlocked, the first dialing plate 250 is adjusted upward, the second dialing plate 260 is driven to move downward through the cooperation of the second transmission gear 280 and the meshed second tooth groove 252 and third tooth groove 262, so as to adjust the distance between the first dialing plate 250 and the second dialing plate 260, after the distance is adapted to the push rod type switch 112 on the circuit breaker body, the hand-held round rod 320 is released, the U-shaped lock rod 330 moves to the assembly seat 270 under the action of the reset spring 310, the first lock tongue 331 and the second lock tongue 332 are inserted into the second tooth groove 252 and the fourth tooth groove 263 respectively, the first dialing plate 250 and the second dialing plate 260 are locked, then the cover 100 and the explosion-proof shell 110 are locked through the internal hexagonal screw nut, the knob body 210 is rotated, the first transmission gear 230 is driven to rotate through the transmission shaft 220, the first transmission gear 230 drives the transmission plate 240 to move along the vertical direction through the meshed first tooth groove 241, and then drives the dialing plate to move along the vertical direction to dial the push rod type switch 112.
[0042] The preferred embodiments of the utility model are described above, and the utility model is not limited to the above, for those skilled in the art, the utility model can have various changes and changes, it should be pointed out: for ordinary skilled in the art, on the premise of not departing from the principle of the utility model, still can make a number of improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the utility model.
Claims
1. An explosion-proof circuit breaker knob mechanism comprising a circuit breaker body provided with a push rod type switch (112), characterized in that: Also include the assembly of the circuit breaker body explosion-proof shell (110) and cover (100), the cover (100) is equipped with knob mechanism (200), the knob mechanism (200) includes transmission shaft (220), one end of the transmission shaft (220) is fixedly installed with the knob body (210) outside the cover (100), the other end is fixedly installed with first transmission gear (230), the knob mechanism (200) also includes transmission plate (240), the side wall of the transmission plate (240) is provided with the first tooth groove (241) that is adapted with first transmission gear (230), the transmission plate (240) is equipped with the lever of the push rod type switch (112) on the side wall of one side relative to transmission shaft (220), the lever includes the first lever piece (250) and the second lever piece (260) that are symmetrically arranged on the transmission plate (240).
2. An anti-break circuit breaker knob mechanism according to claim 1, characterized in that: The knob mechanism (200) also includes spacing adjustment assembly, the side wall of the transmission plate (240) towards the circuit breaker body is equipped with assembly seat (270), the second assembly groove (281) is formed in the assembly seat (270), the spacing adjustment assembly includes the second transmission gear (280) that is movably assembled in the second assembly groove (281), the first lever piece (250) and the second lever piece (260) are symmetrically assembled on both sides of the second transmission gear (280), the first lever piece (250) and the second lever piece (260) are respectively equipped with the first transmission rod (251) and the second transmission rod (261) that extend to the inboard side of the second assembly groove (281) on the side of adjacent side, the side wall of the first transmission rod (251) and the second transmission rod (261) adjacent side is respectively equipped with the second tooth groove (252) and the third tooth groove (262) that are adapted with the second transmission gear (280).
3. An anti-break circuit breaker knob mechanism according to claim 2, characterized in that: The assembly seat (270) is equipped with lever locking assembly, the side wall of the assembly seat (270) towards the U-shaped lock rod (330) is symmetrically provided with lock hole, the both ends of the U-shaped lock rod (330) extend to the inboard side of the second assembly groove (281) through the respective lock hole, the side wall of the second transmission rod (261) towards the U-shaped lock rod (330) side is equipped with the fourth tooth groove (263), one end of the U-shaped lock rod (330) is equipped with the first lock tongue (331) that is adapted with the second tooth groove (252), the other end is equipped with the second lock tongue (332) that is adapted with the fourth tooth groove (263).
4. An anti-pop circuit breaker knob mechanism as defined in claim 3, wherein: The U-shaped lock rod (330) and the assembly seat (270) are equipped with return spring (310).
5. An explosion-proof circuit breaker knob mechanism according to claim 4, wherein: The side of the U-shaped lock rod (330) relative to the assembly seat (270) is equipped with handheld round rod (320).
6. An explosion-proof circuit breaker knob mechanism as defined in claim 1 wherein: The explosion-proof shell (110) and the cover (100) are made of insulating plastic.
7. An explosion-proof circuit breaker knob mechanism as defined in claim 1 wherein: The first assembly groove (111) is formed in the explosion-proof shell (110), and the circuit breaker body is fixedly assembled in the first assembly groove (111).