CN111180224A - High-reliability fire-cut-off limiter - Google Patents
High-reliability fire-cut-off limiter Download PDFInfo
- Publication number
- CN111180224A CN111180224A CN201910920315.0A CN201910920315A CN111180224A CN 111180224 A CN111180224 A CN 111180224A CN 201910920315 A CN201910920315 A CN 201910920315A CN 111180224 A CN111180224 A CN 111180224A
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- Prior art keywords
- groove
- contact
- transmission
- transmission rod
- rod
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a high-reliability fire-break limiter, which comprises a shell and a transmission assembly, wherein the shell comprises: the device comprises a base, a plurality of fixed contacts, a transmission groove, a plurality of contact grooves and a spring groove, wherein the contact grooves and the spring groove are arranged in parallel; the cover plate is matched with the base; the transmission assembly comprises a transmission rod and a push rod, the transmission rod is arranged in the transmission groove and is shorter than the transmission groove, the power transmission rod is provided with a moving contact and a connecting part, the moving contact is arranged in the contact groove, the connecting part is arranged in the spring groove, the connecting part is connected with the two sides of the spring groove through a spring, and the push rod transmits external thrust to the transmission rod and enables the transmission rod to reciprocate. The invention has the advantages of simple mechanical structure, low manufacturing cost, compact circuit arrangement, high reliability and safety, obvious difference of on-off actions, small overall volume, high stability, easy installation and disassembly of the overall structure and improved use efficiency.
Description
Technical Field
The invention relates to the field of limiting device application, in particular to a high-reliability fire-break limiter.
Background
The fire-stopping position limiter is a protective type and mainly comprises a moving contact, a fixed contact, a push-pull rod (action rod), a base, a cover and a shell, when a lifting hook rises or falls to a certain limit position, the push-pull rod on the fire-stopping position limiter is pushed or pulled to break the moving contact and the fixed contact, a main power supply is cut off, and therefore the position limiting function is achieved
The fire-cut-off limiter is actually one of travel switches, and the fire-cut-off is to cut off a power supply. The fire-breaking limit is a protection device for the ascending and descending stroke of the electric hoist, the steel wire rope is limited to work within a certain range, when the adjusting point is reached, the fire-breaking limit works, the motor input power supply in the corresponding direction is broken off, the lifting hook is prevented from being jacked upwards, and the steel wire is prevented from reversing downwards.
As published (bulletin) No.: the utility model discloses CN 203631372U's utility model relates to a cut off fire stopper. The shell of the limiter comprises an upper cover and a base, wherein the upper cover is provided with a first mounting groove and a second mounting groove which are connected through a sliding groove, a first push head, a first contact seat, a first moving contact and a first static contact are arranged in the first mounting groove, a second push head, a second contact seat, a second moving contact and a second static contact are arranged in the second mounting groove, a push-pull rod penetrates through the sliding groove, one end of the push-pull rod is connected with the first push head, the other end of the push-pull rod is connected with the second push head, and the push-pull rod is pushed or pulled to form the separation of the first moving contact and the first static contact or the separation of the second moving contact and the second static contact.
The prior art is generally large in size, complex in conductive structure and mechanical structure, easy to cause poor contact or incomplete disconnection and safety problems, high in production and manufacturing difficulty and high in cost.
Disclosure of Invention
Aiming at the problems of complex structure and low safety in the prior art, the invention provides the high-reliability fire-breaking limiter, which has the advantages that the conductive structure and the mechanical structure are simplified through complete redesign, the condition of poor contact or incomplete disconnection is reduced, the production cost is low, and the maintenance is facilitated.
The technical scheme of the invention is as follows.
The utility model provides a disconnected fire stopper of high reliability, includes casing and drive assembly, the casing includes: the device comprises a base, a plurality of fixed contacts, a transmission groove, a plurality of contact grooves and a spring groove, wherein the contact grooves and the spring groove are arranged in parallel; the cover plate is matched with the base; the transmission assembly comprises a transmission rod and a push rod, the transmission rod is arranged in the transmission groove and is shorter than the transmission groove, the power transmission rod is provided with a moving contact and a connecting part, the moving contact is arranged in the contact groove, the connecting part is arranged in the spring groove, the connecting part is connected with the two sides of the spring groove through a spring, and the push rod transmits external thrust to the transmission rod and enables the transmission rod to reciprocate. The scheme conducts external force to the transmission rod through the push rod, and the transmission rod moves while jumping action is carried out under the action of spring force, so that the transmission rod can only stay at two end point positions of the transmission groove, the disconnection is thorough, the structure is simple and compact, the number of conductive devices is small, and poor circuit contact or safety problems cannot occur.
Preferably, the transmission assembly further comprises a steering module, the transmission rod is connected with the push rod through the steering module, and the steering module enables the movement direction of the transmission rod to be perpendicular to the movement direction of the push rod. Because the movement is directly carried out in one direction, the whole device is overlong or overlarge in volume and moves in two directions, so that the structure is more compact, side effects generated by inertia in the action process can be reduced, and the stability is improved.
Preferably, the bottom of the transmission rod is provided with an opening, the steering module is provided with a raised cuboid sleeve for the opposite side, each of the protrusions comprises an inclined plane, the vertical distance from each raised surface to the raised surface of the other side is equal, the sleeve is sleeved on the push rod, and the opening of the transmission rod is sleeved on the sleeve. The distance from the highest point of the two protrusions to the other side of the sleeve piece is equal, the distance between the inclined planes is also equal, similarly to the formation of an inclined guide rail, after the opening of the transmission rod is sleeved, the sleeve piece moves along with the push rod, the position of the sleeve piece relative to the transmission rod can change due to the fact that the movement direction of the transmission rod is different from that of the push rod, the inclined guide rail formed by the inclined planes on the sleeve piece moves due to the fact that the caliber of the opening of the transmission rod does not change, the opening of the transmission rod is driven to start to move, and the transmission rod moves in a direction different from.
The steering module can also be composed of a gear and a rack, and can also realize the steering of the motion direction, but the structure stability of the rotating mode is not good enough, and the manufacturing cost is high.
Preferably, one end of the transmission rod, which is far away from the push rod, is provided with a length allowance relative to the moving contact or the connecting part, the transmission groove is provided with a length allowance after penetrating through the middle part of the contact groove and the middle part of the spring groove, and the transmission rod moves in the transmission groove and is provided with a section of length allowance existing in the transmission groove. If no allowance is left, when the transmission rod returns after moving to a certain end, the end head is not limited by the groove wall, so that the transmission rod is easy to deviate, is blocked and breaks down, and the stability and the reliability can be improved by arranging the allowance.
Preferably, the transmission rod is provided with a plurality of openings, the moving contact penetrates through the openings and is communicated to two sides of the contact groove, and the connecting part and the spring are connected in the openings.
Preferably, the fixed contact includes a contact and a gasket, the gasket extends from the inside of the contact groove to the outside of the contact groove, and the contact is connected with the gasket at the outside of the contact groove. The joint can be a screw and the like generally, can fix the gasket and is easy to detach and install.
Preferably, the number of the contact grooves is two, the second contact groove is arranged between the first contact groove and the spring groove, a certain angle is formed between a joint connected with the second contact groove and the second contact groove, and the joint connected with the first contact groove is parallel to the first contact groove. Because the second contact groove is clamped in the middle of other grooves, the joint is arranged in an inclined installation mode in order to facilitate the assembly and disassembly of the joint, the joint of the first contact groove can be inclined or not inclined, but if the installation direction is still inclined, the distance between the two joints is too close, the short circuit and other situations are easy to occur, and therefore the joint and the first contact groove are selected to be parallel to each other.
The substantial effects of the invention include: the mechanical structure is simple, the manufacturing cost is low, the circuit arrangement is compact, the reliability and the safety are high, the difference of the on-off action is obvious, the motion direction of the transmission rod is different from the direction of external thrust, the whole volume is reduced, the stability is improved, the whole structure is easy to mount and dismount, and the use efficiency is improved.
Drawings
FIG. 1 is a perspective view of a base according to an embodiment of the present invention;
FIG. 2 is a plan view of a base according to an embodiment of the present invention;
FIG. 3 is a schematic view of a drive link according to an embodiment of the present invention;
FIG. 4 is a schematic view of a kit according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an embodiment of the present invention;
the figure includes: 1-a first contact groove, 2-a second contact groove, 3-a spring groove, 4-a transmission groove, 5-a static contact, 6-a transmission rod, 7-an opening, 8-a moving contact and 9-a kit.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In addition, numerous specific details are set forth below in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.
In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present embodiment, "a plurality" means two or more unless otherwise specified.
Example (b):
a high-reliability fire-break limiter comprises a shell and a transmission assembly, wherein the shell comprises a base as shown in figures 1 and 2, a plurality of static contacts 5 are arranged outside the base, a transmission groove 4, two contact grooves arranged in parallel and a spring groove 3 are arranged inside the base, the middle parts of the contact grooves and the spring groove 3 are communicated through the transmission groove 4, and two ends of each contact groove are connected with the static contacts 5; and the cover plate is matched with the base. The cover plate and the base of the embodiment are fixed through screws.
The second contact groove 2 of this embodiment is disposed between the first contact groove 1 and the spring groove 3, a certain angle is formed between the joint connected to the second contact groove 2 and the second contact groove 2, and the joint connected to the first contact groove 1 is parallel to the first contact groove 1. Because the second contact groove 2 is clamped between other grooves, in order to facilitate the assembly and disassembly of the joints, the joints are arranged in an inclined installation mode, the joints of the first contact groove 1 can be inclined or not inclined, but if the installation direction is still inclined, the distance between the two joints is too close, the situations such as short circuit are easy to occur, and therefore the joints are selected to be parallel to the first contact groove 1. Wherein the positional relationship of the contact groove and the spring groove 3 is replaced to form a new solution.
The transmission assembly comprises a transmission rod 6 and a push rod, the transmission rod 6 is arranged in the transmission groove 4 and is shorter than the transmission groove 4, the power transmission rod is provided with a moving contact 8 and a connecting part, the moving contact 8 is arranged in the contact groove, the connecting part is arranged in the spring groove 3, the connecting part is connected with two sides of the spring groove 3 through a spring, and the push rod transmits external thrust to the transmission rod 6 and enables the transmission rod 6 to reciprocate.
The static contact 5 comprises a joint and a gasket, the gasket extends out of the contact groove from the inside of the contact groove, and the joint is connected with the gasket at the outer side of the contact groove. The joint of this embodiment is the screw, can fix the gasket, and easy dismantlement and installation.
As shown in fig. 3 and 4, the bottom of the transmission rod 6 is provided with an opening 7, the steering module is a cuboid sleeve 9 with protrusions on opposite sides, the protrusions all comprise inclined planes, the vertical distance from each protrusion surface to the protrusion surface on the other side is equal, the sleeve 9 is sleeved on the push rod, and the opening 7 of the transmission rod 6 is sleeved on the sleeve 9. The distance from the highest point of the two protrusions to the other side of the sleeve 9 is equal, the distance between the inclined planes is also equal, similarly, an inclined guide rail is formed, after the opening 7 of the transmission rod 6 is sleeved, the sleeve 9 moves along with the push rod, the position of the sleeve 9 relative to the transmission rod 6 can be changed due to the fact that the moving direction of the transmission rod 6 is different from that of the push rod, the aperture of the opening 7 of the transmission rod 6 is not changed, the inclined guide rail formed by the inclined planes of the protrusions on the sleeve 9 moves, the opening 7 of the transmission rod 6 is driven to start moving, and the transmission rod 6 moves in a direction different from that of the push rod due.
The end of the transmission rod 6, far away from the push rod, is reserved with a length allowance relative to the moving contact 8, the transmission groove 4 is reserved with a length allowance after penetrating through the middle of the contact groove and the middle of the spring groove 3, and the transmission rod 6 is arranged in the length allowance section of the transmission groove 4 when moving in the transmission groove 4. If no allowance is left, when the transmission rod 6 returns after moving to a certain end, the end head is not limited by the groove wall, so that the deviation is easy to occur, the clamping is caused, and the fault is caused, so that the stability and the reliability can be improved by arranging the allowance.
The driving rod 6 is provided with a plurality of openings, the moving contact 8 penetrates through the openings and is communicated to the two sides of the contact groove, and the connecting part and the spring are connected in the openings.
As shown in fig. 5, in the present embodiment, an external force is transmitted to the transmission rod 6 through the push rod, and the transmission rod 6 performs a jumping motion under the action of the elastic force of the spring while moving, so that the transmission rod 6 only stays at two end positions of the transmission groove 4, and the disconnection is complete.
Through the description of the above embodiments, those skilled in the art will understand that, for convenience and simplicity of description, only the division of the above functional modules is used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of a specific device is divided into different functional modules to complete all or part of the above described functions.
In the embodiments provided in this application, it should be understood that the disclosed structures and methods may be implemented in other ways. For example, the above-described embodiments with respect to structures are merely illustrative, and for example, a module or a unit may be divided into only one logic function, and may have another division manner in actual implementation, for example, a plurality of units or components may be combined or may be integrated into another structure, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, structures or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a disconnected fire stopper of high reliability, includes casing and drive assembly, its characterized in that, the casing includes:
the device comprises a base, a plurality of fixed contacts, a transmission groove, a plurality of contact grooves and a spring groove, wherein the contact grooves and the spring groove are arranged in parallel;
the cover plate is matched with the base;
the transmission assembly comprises a transmission rod and a push rod, the transmission rod is arranged in the transmission groove and is shorter than the transmission groove, the power transmission rod is provided with a moving contact and a connecting part, the moving contact is arranged in the contact groove, the connecting part is arranged in the spring groove, the connecting part is connected with the two sides of the spring groove through a spring, and the push rod transmits external thrust to the transmission rod and enables the transmission rod to reciprocate.
2. The high reliability fire break limiter of claim 1, wherein the transmission assembly further comprises a steering module, the transmission rod is connected with the push rod through the steering module, and the steering module enables the movement direction of the transmission rod to be perpendicular to the movement direction of the push rod.
3. The high-reliability fire break limiter as claimed in claim 2, wherein the bottom of the transmission rod is provided with an opening, the steering module is a cuboid sleeve with protrusions on opposite sides, the protrusions comprise inclined planes, the vertical distance from each protrusion surface to the protrusion surface on the other side is equal, the sleeve is sleeved on the push rod, and the opening of the transmission rod is sleeved on the sleeve.
4. The high-reliability fire breaking limiter as claimed in claim 1, 2 or 3, wherein a length margin is left at one end of the transmission rod far away from the push rod relative to the moving contact or the connecting part, a length margin is left after the transmission groove penetrates through the middle part of the contact groove and the middle part of the spring groove, and a section of the transmission rod exists in the length margin section of the transmission groove when the transmission rod moves in the transmission groove.
5. The highly reliable fire break stopper as claimed in claim 1, wherein the driving rod is provided with a plurality of openings through which the movable contacts are connected to both sides of the contact groove, and the connecting portion is connected to the spring in the openings.
6. The highly reliable fire break limiter as claimed in claim 1, wherein the stationary contact comprises a contact and a gasket, the gasket extends from inside to outside of the contact groove, and the contact is connected to the gasket at outside of the contact groove.
7. The highly reliable fire break limiter as claimed in claim 5, wherein the number of the contact grooves is two, the second contact groove is disposed between the first contact groove and the spring groove, the joint of the second contact groove is at an angle with the second contact groove, and the joint of the first contact groove is parallel to the first contact groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910920315.0A CN111180224B (en) | 2019-09-26 | 2019-09-26 | High-reliability fire-cut-off limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910920315.0A CN111180224B (en) | 2019-09-26 | 2019-09-26 | High-reliability fire-cut-off limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111180224A true CN111180224A (en) | 2020-05-19 |
| CN111180224B CN111180224B (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910920315.0A Active CN111180224B (en) | 2019-09-26 | 2019-09-26 | High-reliability fire-cut-off limiter |
Country Status (1)
| Country | Link |
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| CN (1) | CN111180224B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5374791A (en) * | 1992-02-28 | 1994-12-20 | Somfy | Automatic stop device for the electric drive of a door, shutter, blind or the like |
| US5927485A (en) * | 1997-09-09 | 1999-07-27 | Allen-Bradley Company | Auxiliary switch including cam operated, u-shaped leaf spring bridging contact arrangement |
| JP2002117746A (en) * | 2000-10-06 | 2002-04-19 | Metrol Ltd | Switch with stopper |
| US6693248B1 (en) * | 2002-10-28 | 2004-02-17 | General Electric Company | Methods and apparatus for transferring electrical power |
| CN201332037Y (en) * | 2008-10-17 | 2009-10-21 | 朱平远 | Multi-set travel switch |
| CN204441122U (en) * | 2015-03-12 | 2015-07-01 | 浙江百宸电气有限公司 | The auxiliary switch that a kind of break-make is effective |
| CN105470064A (en) * | 2015-12-31 | 2016-04-06 | 德力西电气有限公司 | Tripping apparatus and circuit breaker apparatus |
| CN109585230A (en) * | 2018-10-19 | 2019-04-05 | 厦门宏发开关设备有限公司 | A kind of side hanging auxiliary contactor module that contact adhesion is self-locking |
| CN110189936A (en) * | 2019-05-10 | 2019-08-30 | 德力西电气有限公司 | Contact in auxiliary switch supports supporting mechanism |
-
2019
- 2019-09-26 CN CN201910920315.0A patent/CN111180224B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5374791A (en) * | 1992-02-28 | 1994-12-20 | Somfy | Automatic stop device for the electric drive of a door, shutter, blind or the like |
| US5927485A (en) * | 1997-09-09 | 1999-07-27 | Allen-Bradley Company | Auxiliary switch including cam operated, u-shaped leaf spring bridging contact arrangement |
| JP2002117746A (en) * | 2000-10-06 | 2002-04-19 | Metrol Ltd | Switch with stopper |
| US6693248B1 (en) * | 2002-10-28 | 2004-02-17 | General Electric Company | Methods and apparatus for transferring electrical power |
| CN201332037Y (en) * | 2008-10-17 | 2009-10-21 | 朱平远 | Multi-set travel switch |
| CN204441122U (en) * | 2015-03-12 | 2015-07-01 | 浙江百宸电气有限公司 | The auxiliary switch that a kind of break-make is effective |
| CN105470064A (en) * | 2015-12-31 | 2016-04-06 | 德力西电气有限公司 | Tripping apparatus and circuit breaker apparatus |
| CN109585230A (en) * | 2018-10-19 | 2019-04-05 | 厦门宏发开关设备有限公司 | A kind of side hanging auxiliary contactor module that contact adhesion is self-locking |
| CN110189936A (en) * | 2019-05-10 | 2019-08-30 | 德力西电气有限公司 | Contact in auxiliary switch supports supporting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111180224B (en) | 2021-11-09 |
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