CN201780889U - Worm-and-worm gear transmission mechanism for automatic transfer switching equipment - Google Patents
Worm-and-worm gear transmission mechanism for automatic transfer switching equipment Download PDFInfo
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- CN201780889U CN201780889U CN2010202643652U CN201020264365U CN201780889U CN 201780889 U CN201780889 U CN 201780889U CN 2010202643652 U CN2010202643652 U CN 2010202643652U CN 201020264365 U CN201020264365 U CN 201020264365U CN 201780889 U CN201780889 U CN 201780889U
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- worm
- worm gear
- connecting rod
- automatic change
- hinged
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Abstract
A worm-and-worm gear transmission mechanism for automatic transfer switching equipment (ATSE) comprises a first worm gear, a second worm gear and a worm, wherein the two ends of the worm are provided with toothed segments; the middle of the worm is provided with a straight segment; the first worm gear is installed at one end of a base body of the ATSE in a rotatable manner; the second worm gear is installed at the other end of the base body in a rotatable manner; the worm is simultaneously meshed with the first worm gear and the second worm gear; the worm is connected with a drive mechanism for pushing the worm to reciprocate; the first worm gear is linked with a first moving contact of the ATSE; and the second worm gear is linked with a second moving contact of the ATSE. The mechanism is simple, has strong impact vibration resistance, less impact force during contact closing/opening and less bounce and greatly improves the working stability.
Description
Technical field
The utility model belongs to a kind of low voltage switchgear, relates in particular to a kind of automatic change-over switch equipment.
Background technology
Automatic transfer switching electric appliance (ATSE) mainly is used in emergency power supply system, is the device for switching from the automatic changing-over of one road power supply to another road (standby) power supply with load circuit, to guarantee that important load is continuous, reliability service.Therefore, ATSE usually is applied in important electricity consumption place, and its product reliability is particularly important.Conversion is in case failure will cause one of following two kinds of harm: short circuit between power supply or important load outage (even of short duration power failure), its consequence all is serious.This not only can bring economic loss (make and produce pause, finance paralysis), also may cause social concern (life and safety are in danger).Therefore, industrially developed country all the production of automatic transfer switching electric appliance, use and to classify that emphasis is limited and standard as.At present, double power supply automatic transfer switch generally all is that helix tube type electromagnetism and lever operated connecting rod directly drive, and needs between two groups of contacts to guarantee that with mechanical interlocking or electrical equipment interlocking interlocking two groups of contacts can not connect simultaneously.
See figures.1.and.2, the transmission mechanism of existing automatic change-over switch equipment adopts the operation electromagnet to realize the conversion of two groups of contacts, for example Fig. 1 usually, by the reciprocating motion of operation high-speed double electromagnet, and then the control single-pole double-throw switch (SPDT) is realized being transformed into another group contact II from one group of contact I; For example Fig. 2 by the reciprocating motion of operation high-speed double electromagnet, and then controls double-point double-throw switch, realizes that one group of contact I is transformed into another group contact II.The defective that exists: mechanism's complexity, protecting against shock vibration ability are weak, contact divides that fashionable impulsive force is big, spring is many, poor reliability.
Summary of the invention
For a little less than mechanism's complexity of the transmission mechanism that overcomes existing automatic change-over switch equipment, the protecting against shock vibration ability, contact divides that fashionable impulsive force is big, spring is many, the deficiency of poor reliability, the utility model provides that a kind of mechanism is simple, the protecting against shock vibration ability strong, contact divides that fashionable impulsive force is less, spring is few, improves the Worm gear and worm transmission mechanism of automatic change-over switch equipment of the reliability of work greatly.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of Worm gear and worm transmission mechanism of automatic change-over switch equipment, comprise first worm gear, second worm gear and worm screw, the two ends of described worm screw are provided with the profile of tooth section, the middle part of described worm screw is a flat segments, described first worm gear is installed in rotation on the end at the base body of automatic change-over, and described second worm gear is installed in rotation on the other end of described base body; Described worm screw meshes with first worm gear and second worm gear simultaneously, described worm screw be connected in order to promote the reciprocating driving mechanism of worm screw, first moving contact interlock of described first worm gear and automatic change-over switch equipment, second moving contact interlock of described second worm gear and automatic change-over switch equipment.
As preferred a kind of scheme: first bearing pin is installed on described first worm gear, one end of described first bearing pin and first connecting rod is hinged, one end of the other end of described first connecting rod and second connecting rod is hinged, the middle part of the other end of described second connecting rod and described first movable feeler lever is hinged, one end of described first movable feeler lever is installed first contact that cooperates with first fixed contact, and the other end of described first movable feeler lever is hinged on the described base body;
Second bearing pin is installed on described second worm gear, one end of described second bearing pin and third connecting rod is hinged, one end of the other end of described third connecting rod and the 4th connecting rod is hinged, the middle part of the other end of described the 4th connecting rod and described second movable feeler lever is hinged, one end of described second movable feeler lever is installed second contact that cooperates with second fixed contact, and the other end of described second movable feeler lever is hinged on the described base body.
Further, described driving mechanism is positioned at the centre position of worm screw, and described driving mechanism is installed on the described base body.
Described worm screw is positioned at the upper end or the lower end of described first worm gear and second worm gear.This structure helps assembling, can dwindle assembly space.
Technical conceive of the present utility model is: described transmission mechanism comprises two groups of dynamic and static contacts at automatic transfer switching electric appliance two ends; Drive the cephalomotor connecting rod of movable contact; Two worm gears and a worm screw of drive link motion; And drive the motor operated driving mechanism that worm screw is moved.After described motor operated driving mechanism energising work, drive described worm screw and move right, first worm gear is rotated counterclockwise, and drives the action of first connecting rod and second connecting rod, and first moving contact is opened.At this moment, described motor operated driving mechanism outage, automatic change-over is in open position.When described motor operated driving mechanism is switched on once more, worm screw continues to move right, first worm gear is idle stroke after rotating to certain position, first worm gear no longer moves, this moment, second worm gear began to be rotated counterclockwise, drive the action of third connecting rod and the 4th connecting rod, make the second moving contact closure, automatic change-over is finished transfer process.If do not cut off the power supply in the middle of the described motor operated driving mechanism, automatic change-over is finished transfer process continuously.If require the automatic change-over inverse transform, operation principle is the same, is the contrary operation of described motor operated driving mechanism.
The beneficial effects of the utility model mainly show: mechanism is simple, the protecting against shock vibration ability strong, contact divides that fashionable impulsive force is less, spring is few, improves the reliability of work greatly.
Description of drawings
Fig. 1 is a kind of operation principle schematic diagram of automatic transfer switching electric appliance of prior art.
Fig. 2 is the operation principle schematic diagram of the automatic transfer switching electric appliance of another kind of prior art.
Course of action schematic diagram when Fig. 3 is the utility model automatic change-over combined floodgate.
Course of action schematic diagram when Fig. 4 is the utility model automatic change-over separating brake.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 3 and Fig. 4, a kind of Worm gear and worm transmission mechanism of automatic change-over switch equipment, comprise first worm gear 2, second worm gear 4 and worm screw 3, the two ends of described worm screw 3 are provided with the profile of tooth section, the middle part of described worm screw 3 is a flat segments, described first worm gear 2 is installed in rotation on the end at the base body of automatic change-over, and described second worm gear 4 is installed in rotation on the other end of described base body; Described worm screw 3 meshes with first worm gear 2 and second worm gear 4 simultaneously, described worm screw 3 be connected in order to promote the reciprocating driving mechanism 10 of worm screw, described first worm gear 2 links with first moving contact 8 of automatic change-over switch equipment, and described second worm gear 4 links with second moving contact 7 of automatic change-over switch equipment.
The transmission mechanism of the automatic change-over switch equipment of present embodiment totally comprises following structure: at second worm gear 4 of an end of the base body of automatic change-over, at first worm gear, 2, two worm gears of the other end of base body all is that the moving axis that can rotate after fixedly connected by rotation axis rotates; A worm screw 3 is installed in upper end or lower end at two worm gears, and worm screw 3 simultaneously and first worm gear 2 and second worm gear 4 grin and close, the centre position of described worm screw 3 is equipped with driving mechanism 10; Be provided with a hole in described second worm gear, 4 circumference outer circular edge, fixedly connected with worm gear with axle in the described hole, one end of described first connecting rod 5 is installed to the axle of installing on second worm gear 4 and goes up rotatable motion, one end of third connecting rod 6 is connected with the other end of described the 4th connecting rod 5, the middle connection with universal joint or axle connects, and described third connecting rod 5 and the 4th connecting rod 6 can rotate; The other end of described the 4th connecting rod 6 is connected with second moving contact 7, and described the 4th connecting rod 6 and second moving contact 7 can rotate; One end of described second moving contact 7 is welded with silver contact, and the other end is installed in rotatable motion in the base body; One end of base body is installed second fixed contact 11, and the position of described second fixed contact 11 is below second moving contact 7, and it is just in time relative that second moving contact 7 is rotated down the contact of its contact, back and second fixed contact 11;
In like manner, first worm gear 2 on the other end of worm screw 3 connects first connecting rod 1, the other end of described first connecting rod 1 connects an end of second connecting rod 9, the other end of described second connecting rod 9 connects first moving contact 8, under described first moving contact 8 contacts first fixed contact 12 is installed, described first fixed contact 12 is fixedlyed connected with base body;
Driving described worm screw 3 after described motor operated driving mechanism 10 energising work moves right, this moment, described second worm gear 4 was rotated counterclockwise, driving described third connecting rod 5 moves upward, described the 4th connecting rod 6 also moves upward immediately, described the 4th connecting rod 6 drives described second moving contact 7 and moves upward, and second moving contact 7 is opened.At this moment, described motor operated driving mechanism 10 outages, automatic change-over is in the open position (see figure 4).When described motor operated driving mechanism 10 is switched on once more, described worm screw 3 continues to move right, described second worm gear 4 is idle stroke after rotating to certain position, second worm gear 4 no longer moves, this moment, first worm gear 2 of described worm screw 3 opposite sides began to be rotated counterclockwise, drive described first connecting rod 1 and second connecting rod 9 actions, make first moving contact, 8 closures, automatic change-over is finished transfer process.If do not cut off the power supply in the middle of the described driving mechanism 10, automatic change-over is finished transfer process continuously.If require the automatic change-over inverse transform, operation principle is the same, is described driving mechanism 10 contrary operations.
Claims (4)
1. the Worm gear and worm transmission mechanism of an automatic change-over switch equipment, it is characterized in that: described transmission mechanism comprises first worm gear, second worm gear and worm screw, the two ends of described worm screw are provided with the profile of tooth section, the middle part of described worm screw is a flat segments, described first worm gear is installed in rotation on the end at the base body of automatic change-over, and described second worm gear is installed in rotation on the other end of described base body; Described worm screw meshes with first worm gear and second worm gear simultaneously, described worm screw be connected in order to promote the reciprocating driving mechanism of worm screw, first moving contact interlock of described first worm gear and automatic change-over switch equipment, second moving contact interlock of described second worm gear and automatic change-over switch equipment.
2. the Worm gear and worm transmission mechanism of automatic change-over switch equipment as claimed in claim 1, it is characterized in that: first bearing pin is installed on described first worm gear, one end of described first bearing pin and first connecting rod is hinged, one end of the other end of described first connecting rod and second connecting rod is hinged, the middle part of the other end of described second connecting rod and described first movable feeler lever is hinged, one end of described first movable feeler lever is installed first contact that cooperates with first fixed contact, and the other end of described first movable feeler lever is hinged on the described base body;
Second bearing pin is installed on described second worm gear, one end of described second bearing pin and third connecting rod is hinged, one end of the other end of described third connecting rod and the 4th connecting rod is hinged, the middle part of the other end of described the 4th connecting rod and described second movable feeler lever is hinged, one end of described second movable feeler lever is installed second contact that cooperates with second fixed contact, and the other end of described second movable feeler lever is hinged on the described base body.
3. the Worm gear and worm transmission mechanism of automatic change-over switch equipment as claimed in claim 1 or 2, it is characterized in that: described driving mechanism is positioned at the centre position of worm screw, and described driving mechanism is installed on the described base body.
4. the Worm gear and worm transmission mechanism of automatic change-over switch equipment as claimed in claim 1 or 2, it is characterized in that: described worm screw is positioned at the upper end or the lower end of described first worm gear and second worm gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202643652U CN201780889U (en) | 2010-07-20 | 2010-07-20 | Worm-and-worm gear transmission mechanism for automatic transfer switching equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202643652U CN201780889U (en) | 2010-07-20 | 2010-07-20 | Worm-and-worm gear transmission mechanism for automatic transfer switching equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201780889U true CN201780889U (en) | 2011-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202643652U Expired - Lifetime CN201780889U (en) | 2010-07-20 | 2010-07-20 | Worm-and-worm gear transmission mechanism for automatic transfer switching equipment |
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| Country | Link |
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| CN (1) | CN201780889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872689A (en) * | 2010-07-20 | 2010-10-27 | 宁波伊尔特智能电器开关有限公司 | Worm gear and worm transmission mechanism for automatic change-over switch equipment |
-
2010
- 2010-07-20 CN CN2010202643652U patent/CN201780889U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872689A (en) * | 2010-07-20 | 2010-10-27 | 宁波伊尔特智能电器开关有限公司 | Worm gear and worm transmission mechanism for automatic change-over switch equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110330 Effective date of abandoning: 20120321 |