CN208352230U - A kind of main shaft limiting device - Google Patents

A kind of main shaft limiting device Download PDF

Info

Publication number
CN208352230U
CN208352230U CN201820831197.7U CN201820831197U CN208352230U CN 208352230 U CN208352230 U CN 208352230U CN 201820831197 U CN201820831197 U CN 201820831197U CN 208352230 U CN208352230 U CN 208352230U
Authority
CN
China
Prior art keywords
main shaft
abutting
cantilever
limit plate
limit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201820831197.7U
Other languages
Chinese (zh)
Inventor
刘丰丰
陈大江
戴罡
邢垒垒
潘璇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Daquan Kaifan switch Co.,Ltd.
Original Assignee
Jiangsu Daquan Kai Kai Switch Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Daquan Kai Kai Switch Co Ltd filed Critical Jiangsu Daquan Kai Kai Switch Co Ltd
Priority to CN201820831197.7U priority Critical patent/CN208352230U/en
Application granted granted Critical
Publication of CN208352230U publication Critical patent/CN208352230U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of main shaft limiting device, low-voltage electrical apparatus component equipment technical fields.The utility model includes moving contact component, static contact component and main shaft, the cantilever for further including limit plate and being fixedly installed on main shaft, limit plate is rotated freely by axle center of rotary shaft, the upper end of limit plate is provided with the first abutting part, the lower end of limit plate is provided with the second abutting part, the lower end in cantilever matched with the second abutting part is provided with the second protrusion, is equipped with the first protrusion in the upper end of cantilever;When separating brake, the first protrusion is collided with first abutting part, and by the first abutting part to the impetus of the second abutting part, the second abutting part holds the second protrusion of cantilever, and main shaft rebound is prevented.The main shaft limiting device of the utility model, structure is simple, number of parts is few, occupies little space.It is realized using limit plate self structure and gravity principle, improves the impact resistance of limit plate, it is effective to prevent main shaft rebound, and then improve frame-type circuit breaker and be resistant to index in short-term.

Description

A kind of main shaft limiting device
Technical field
The invention belongs to low-voltage electrical apparatus component equipment technical fields, and in particular to a kind of main shaft limit of low-voltage circuit breaker Device.
Background technique
Frame-type circuit breaker is resistant to index in short-term and is constantly being promoted in the case where breaker constancy of volume at present, increases Adding contact pressure is a kind of than relatively straightforward method.But this method bring side effect is exactly moving contact in separating brake, and mechanism is outstanding Arm hit limit shaft power become larger, aggravation contact spring back and reduce out away from.In disjunction test, reduction is opened away from easily causing electric arc It restrikes, disjunction is caused to fail.
Main shaft limit currently on the market is to realize that mechanism main axis speed has one when to separating brake using the principle of inertia Fixed requirement, poor reliability.And easily there is limit plate skew, rotation after multiple impact in the limit plate wherein to play a crucial role Not flexible, limit plate rotation shaft distortion, torsional spring suppress the phenomena of the failure such as stuck.
Application No. is the patent applications of 201710149068.X to disclose a kind of moving contact of breaker resilience-proof device, including Breaker body, the mechanism main shaft being arranged on breaker body and anti-rebound mechanism, the second limit shaft are arranged in fixing axle Lower section, the swivel plate by impact portion, blocking portion and mounting hole by being formed, the cross section shape of the outer surface of the blocking portion Shape is set as convex structure, and the contour structure of arc-shaped from lower end to upper end with the distance between the mounting hole center of circle gradually Reducing, the swivel plate is rotatably installed in fixing axle by mounting hole, and the torsional spring is socketed in fixing axle, and torsional spring Two torque arm are respectively acting on the second limit shaft and swivel plate.But the resilient mounting is complicated, needs multiple component joint works Make, and anti-rebound ineffective, influences limit effect.
The breaker that can prevent tripping contact arm from springing back with automatic catch application No. is 98122539.X is to pass through latch Hook 89 navigates to the device 101 in cocked position, makes described two jaws 93 alignment to engage with described stop part 75, when described When contact arm 27 reaches described TRIPPED position, described latch hook 89 just turns to described latch position from described cocked position, When described jaw 93 engaged with described stop part 75, so as to preventing described contact arm 27 from springing back from described TRIPPED position.In fact It applies in example, the device 101 in cocked position is torque spring 101.Its specification the third line of page 6/6: as shown in figure 4, have one with The torque spring 101 that protrusion 99 on the top of contact arm 27 and a latch hook engages can be such that latch hook resets in angle One cocked position, two jaws 93 are aligned to engage with stop part 75 on the position.As it can be seen that although the patent realizes The technical effect for preventing main shaft from springing back, but the movement of its limit plate needs realize that device is complicated and prevents back by torque spring It plays ineffective, influences limit effect.
Transmission chain application No. is 018019403.6 displaceable contact on electrical power breaker is by the locking member (13;31) a brake component (32a is set up;32b;42), which guides on this brake component in opening procedure, and should Locking member is being maintained at its position static relative to connector before a predetermined position to connector 3 described in this.Its The 25th row of specification 4/6: the locking member is supported on one by stop surface 19 under the power effect of reset spring 18 and passes through connector Pin 20 on;The 25th row of specification 5/6: according to reason 5 to Fig. 7, hairpin shape butterfly is designed as the brake component that locking member 31 is set up Shape spring, spring coil are wrapped the first coupling pin 33;The 10th row of specification 6/6: according to Fig. 8 to Figure 10, another embodiment Brake component be designed to the component 42 with guide pin conduit 41 of a rigidity, which is fixed on the coupling section 5 of transmission chain.It can Seeing the patent although realizes the technical effect for preventing main shaft from springing back, but the movement of its limit plate is needed by butterfly spring reality Existing, device is complicated and anti-rebound ineffective, influences limit effect.
Summary of the invention
It is an object of the present invention to provide a kind of easy and the operation is stable main shaft limiting devices.
Specifically, the present invention adopts the following technical solutions realize: including moving contact component, static contact component and master The cantilever that axis further includes limit plate and is fixedly installed on main shaft, limit plate are rotated freely by axle center of rotary shaft, limit plate On be provided with the first abutting part and the second abutting part, it is convex that the lower end in cantilever matched with the second abutting part is provided with second It rises, is equipped with the first protrusion in the upper end of cantilever.
Furthermore, when division brake structure is moved from "on" position to gate-dividing state, the first protrusion and described first Abutting part collision, by the first abutting part to the impetus of the second abutting part, the second abutting part holds the second protrusion of cantilever, Main shaft rebound is prevented.
It should be understood that the cantilever on main shaft is fixed together with main shaft, rotated with the rotation of main shaft.
Furthermore, the second abutting part is with reeded hook-shaped.
Furthermore, rotary shaft is riveting axis.
Furthermore, main shaft is equipped with baffle, further includes the limit shaft matched with baffle, when separating brake, under baffle End is limited axle bumper and lives, to finally limit the final position of main shaft.
It should be understood that the lower end of baffle is limited axle bumper and lives when separating brake, to make to be fixed on a position when main shaft separating brake It sets.
It furthermore, further include support plate, one end cap of support plate is on limit shaft, and another end cap is on the rotary shaft.
It should be understood that the setting of support plate increases structural strength, while playing protective action.
Furthermore, the both ends of support plate are fixed by split washer.
Beneficial effects of the present invention are as follows: main shaft limiting device of the invention, structure is simple, number of parts is few, occupies empty Between it is small.It is realized using limit plate self structure and gravity principle, improves the impact resistance of limit plate, effectively prevent main shaft Rebound, and then improve frame-type circuit breaker and be resistant to index in short-term.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is side diagram of the invention.
Fig. 3 is the working state schematic representation that the present invention closes a floodgate.
Fig. 4 is the working state schematic representation of separating brake of the present invention.
Fig. 5 is that enlarged drawing is hit in cantilever of the present invention and the collision of limit plate upper end.
Fig. 6 is that enlarged drawing is collided in cantilever of the present invention and limit plate lower end.
Label in figure: 1- moving contact component, 2- static contact component, 3- main shaft, 4- side plate, 5- limit plate, 6- connecting rod, 7- Cantilever, 8- baffle, 9- rivet axis, the first abutting part of 10-, the second abutting part of 11-, 12- limit shaft, 13- support plate, 14- first Protrusion;The second protrusion of 15-.
Specific embodiment
Below with reference to embodiment and referring to attached drawing, present invention is further described in detail.
Embodiment 1:
The main shaft limiting device of the present embodiment is applied to division brake structure as shown in Figure 1.The division brake structure includes quiet Contact assembly 2, moving contact component 1, main shaft 3.For main shaft 3 by two support positioning of side plate 4, main shaft 3 is rotatable.It is fixed on main shaft 3 It is provided with connecting rod 6, connecting rod 6 and moving contact component 1 are hinged, and so that moving contact component 1 is linked with the forward and reverse rotation of main shaft 3, into And realize the contact between the moving contact in moving contact component 1 and the static contact in static contact component 2 or separate, i.e. realization division Lock movement.The division brake structure realizes the "on" position and separating brake between static contact component 2 and moving contact component 1 by connecting rod 6 State difference is as shown in Figure 3 and Figure 4.It should be noted that main shaft limiting device of the invention is not limited to be applied to as shown in Figure 1 Division brake structure structure in, can also be applied to realize identical function any other occasion, static contact group therein The structure of part and moving contact component is also possible to not influence other any forms that function of the present invention is realized.
The main shaft limiting device of the present embodiment includes the cantilever 7 being fixedly installed on main shaft 3 and matches reality with cantilever 7 The limit plate 5 of 3 rebound function of main shaft is now prevented, specific structure is as shown in Fig. 1,5,6.Limit plate 5 can be using rotary shaft as axle center It rotates freely, the present embodiment is provided with the first abutting part 10 in the upper end of limit plate 5, and the lower end of limit plate 5 is provided with second Abutting part 11, the second abutting part 11 are with reeded hook-shaped, and the lower end in cantilever 7 matched with the groove is provided with Second protrusion 15 is equipped with the first protrusion 14 in the upper end of cantilever 7.When division brake structure is moved from "on" position to gate-dividing state When, the rotation of main shaft 3 drives cantilever 7 to link, and the first protrusion 14 of cantilever 7 and the first abutting part 10 of 5 upper end of limit plate collide, and leads to The first abutting part 10 is crossed to the impetus of the second abutting part 11, realizes that cantilever 7 and limit plate 5 are revolved towards opposite desired orientation Turn, causes the second protrusion 15 of cantilever 7 gradually to move in the groove from the groove phase-separated state with limit plate 5, limit plate 5 The second abutting part 11 hook portion hold cantilever 7, main shaft 3 rebound prevented.The hook of second abutting part 11 of limit plate 5 Only the short time holds cantilever 7 for part, since there are the hook portions of gravity, 5 lower end of limit plate to revert back Fig. 5 institute below rotary shaft Show position, limit plate 5 returns to original state to move to division brake structure next time from "on" position to gate-dividing state.
It should be noted that the set-up mode of rotary shaft on above-mentioned limit plate 5 is not particularly limited in the present embodiment, both may be used To be that rotary shaft itself is fixed on side plate, matched limit plate 5 is actively set in the rotary shaft, is also possible to rotary shaft Only by side plate positioning support, its own can be rotated, and matched limit plate 5 is fixed in rotary shaft.It is excellent in the present embodiment The set-up mode of side plate is fixed in choosing using rotary shaft, and is further preferably fixed by the way of riveting, i.e., such as Figures 5 and 6 institute The riveting axis 9 shown.Limit plate 5 is equipped with hole, and limit plate 5 is covered on riveting axis 9 by the hole, can be with flexible rotating.
In order to determine the final position of main shaft under gate-dividing state, the present embodiment be additionally provided with baffle 8 as shown in Figure 2 and With the limit shaft 12 of the baffle 8 cooperation.When separating brake, after the hook portion that cantilever 7 is limited plate 5 is held, cantilever 7 is slow with main shaft Revolution, until the lower end for the baffle 8 being fixed on main shaft is limited axis 12 and blocks, to prevent main shaft 3 from further rotating, in turn The position of final limitation main shaft 3.Side plate 4 is fixed in one end of limit shaft 12 can be realized above-mentioned purpose, but as a kind of preferred A side plate 4 is fixed in one end of limit shaft 12 by structure, the present embodiment, and the other end is fixed on another side plate 4, to make a left side Right two side plates 4 are connected by limit shaft 12.
Structural strength in order to further increase, the present embodiment are additionally provided with the support plate 13 as shown in Fig. 1,3,4.Above-mentioned limit Position axis 12 be support plate 13 support is provided, an end cap of support plate 13 on limit shaft 12, another end cap riveting axis 9 on, on The both ends for stating support plate 13 are fixed by split washer.Since stress is very big in 5 course of work of limit plate, riveting axis 9 is easily caused Bending.By support plate 13, rivets 9 both ends of axis and be fixed by side plate 4 and support plate 13, stability enhancing;At the same time, it props up Fagging 13 plays protective action, is in limit plate 5 in the region of a relative closure, avoids shadow in 5 rotation process of limit plate It rings and arrives other parts.
Motion principle of the invention:
Step 1, as shown in figure 5, when shaft is by closing position quick rotation to open position, limit is hit in 7 upper end of cantilever 12 upper end first shock point of plate;
Step 2, as shown in fig. 6, limit plate is turned to such as figure position, while main shaft starts to spring back, and limit is hit in 7 lower end of cantilever Cantilever 7 is held in the second shock point of position 12 lower end of plate, the lower end of limit plate 12, and the rebound of main shaft 3 is prevented.
Although the present invention has been described by way of example and in terms of the preferred embodiments, embodiment is not for the purpose of limiting the invention.Not It is detached from the spirit and scope of the present invention, any equivalent change or retouch done also belongs to the protection scope of the present invention.Cause This protection scope of the present invention should be based on the content defined in the claims of this application.

Claims (7)

1. a kind of main shaft limiting device, including moving contact component (1), static contact component (2) and main shaft (3), it is characterised in that: also Including limit plate (5) and the cantilever (7) being fixedly installed on main shaft (3), limit plate (5) is rotated freely by axle center of rotary shaft, It is provided with the first abutting part (10) and the second abutting part (11) on limit plate (5), is matched with second abutting part (11) The lower end of cantilever (7) is provided with second raised (15), is equipped with first raised (14) in the upper end of cantilever (7).
2. main shaft limiting device according to claim 1, it is characterised in that: when division brake structure is from "on" position to separating brake When state motion, described first raised (14) and first abutting part (10) are collided, right by first abutting part (10) The impetus of second abutting part (11), second abutting part (11) hold second raised (15) of the cantilever (7), Main shaft (3) rebound is prevented.
3. main shaft limiting device according to claim 1, it is characterised in that: second abutting part (11) is with fluted Hook-shaped.
4. main shaft limiting device according to claim 1, it is characterised in that: the rotary shaft is riveting axis (9).
5. main shaft limiting device according to claim 1, it is characterised in that: the main shaft (3) is equipped with baffle (8), also Including the limit shaft (12) matched with the baffle (8), when separating brake, the lower end of baffle (8) is limited axis (12) and blocks, thus Finally limit the position of the main shaft (3).
6. main shaft limiting device according to claim 5, it is characterised in that: further include support plate (13), the support plate (13) one end caps are on the limit shaft (12), and another end cap is in the rotary shaft.
7. main shaft limiting device according to claim 6, it is characterised in that: the both ends of the support plate (13) are kept off by opening Circle is fixed.
CN201820831197.7U 2018-05-30 2018-05-30 A kind of main shaft limiting device Active CN208352230U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820831197.7U CN208352230U (en) 2018-05-30 2018-05-30 A kind of main shaft limiting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820831197.7U CN208352230U (en) 2018-05-30 2018-05-30 A kind of main shaft limiting device

Publications (1)

Publication Number Publication Date
CN208352230U true CN208352230U (en) 2019-01-08

Family

ID=64891334

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820831197.7U Active CN208352230U (en) 2018-05-30 2018-05-30 A kind of main shaft limiting device

Country Status (1)

Country Link
CN (1) CN208352230U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019227653A1 (en) * 2018-05-30 2019-12-05 大全集团有限公司 Main shaft limiting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019227653A1 (en) * 2018-05-30 2019-12-05 大全集团有限公司 Main shaft limiting device

Similar Documents

Publication Publication Date Title
CN208352230U (en) A kind of main shaft limiting device
CN103573027B (en) Prevent door handle device for vehicle and the vehicle of opening car door lock when side impact
RU2018107849A (en) Disconnecting mechanism for the switch
CN104690586A (en) Interlocking type tool changing mechanical arm device
CN104651915A (en) Clamp for electric plating
EP0756754B1 (en) Drive device with a locking device to prevent switch shaft rebound
CN206742179U (en) Moving contact of breaker resilience-proof device
WO2019227653A1 (en) Main shaft limiting device
US3769477A (en) Switch operating mechanism
CN205194638U (en) Closing retaining device
RU2018107850A (en) OPERATING MECHANISM WITH STORAGE OF ENERGY FOR THE SWITCH
AU2020103577A4 (en) Spindle limiting device
EP1336186B1 (en) Drive train for a displaceable contact on an electrical power breaker
CN107768155B (en) Circuit breaker operating mechanism
US3204739A (en) Shaft stop mechanism
CN107481897B (en) A kind of resilience-proof device of breaker
CN205542458U (en) Automatic change over switch prevents bouncer
CN205863112U (en) A kind of resilience-proof device of chopper
CN104538262B (en) Chopper and energy storage thereof and resetting-mechanism
CN105719857A (en) Anti-bounce apparatus of automatic transfer switching equipment
CN204103360U (en) Instrument changed by a kind of conductor spacer
CN204497526U (en) Automobile card disc type safety hit live wire
CN204303699U (en) The anti-contact falling device of link type
CN107452566B (en) The releasing structure of breaker
CN107706010B (en) A kind of high-speed switch holding mechanism

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: No.66 Daquan Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province

Patentee after: Jiangsu Daquan Kaifan switch Co.,Ltd.

Address before: No.66 Daquan Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province

Patentee before: Jiangsu Daquan Kaifan Switch Co.,Ltd.