CN109950068A - Worm gear type transmission switch - Google Patents
Worm gear type transmission switch Download PDFInfo
- Publication number
- CN109950068A CN109950068A CN201711394622.7A CN201711394622A CN109950068A CN 109950068 A CN109950068 A CN 109950068A CN 201711394622 A CN201711394622 A CN 201711394622A CN 109950068 A CN109950068 A CN 109950068A
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- worm gear
- worm
- worm screw
- hinged
- connecting rod
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Abstract
A kind of worm gear type transmission switch, including the first worm gear, the second worm gear and worm screw, the both ends of the worm screw are equipped with tooth form section, the middle part of the worm screw is flat segments, first worm gear is installed in rotation on one end of the base body of automatic change-over, and second worm gear is installed in rotation on the other end of the base body；The worm screw engages with the first worm gear and the second worm gear simultaneously, the worm screw connect with the driving mechanism to push worm screw to move back and forth, second moving contact of the linkage of the first moving contact of first worm gear and automatic change-over switch equipment, second worm gear and automatic change-over switch equipment links.Structure of the present invention is simple, protecting against shock vibration ability is strong, Contact Breaking/Making Operations when impact force is smaller, spring is few, greatly improve the reliability of work.
Description
Technical field
The invention belongs to a kind of low voltage switch equipment more particularly to a kind of automatic change-over switch equipments.
Background technique
Automatic transfer switching electric appliance (ATSE) is used primarily in emergency power supply system, is that load circuit is automatic from power supply all the way
Changing-over to another way (spare) power supply device for switching, to ensure that important load is continuous, reliability service.Therefore, ATSE is usually answered
Used in important electricity utilization site, product reliability is particularly important.Conversion once will unsuccessfully will cause one of following two kinds of harm: electricity
Short circuit or important load power-off (or even transient-power failure) between source, consequence is all serious.This can not only bring economic damage
It loses and (so that production is paused, finance paralysis), it is also possible to cause social concern (life and safety is made to be in danger).Therefore, work
Industry developed country all limits and standardizes the production of automatic transfer switching electric appliance, using being classified as emphasis.Currently, dual power supply is certainly
Dynamic change-over switch generally is helix tube type electromagnetism and handle operator link directly drives, and need between two groups of contacts with mechanical interlocking or
The interlocking interlocking of person's electric appliance is to guarantee that two groups of contacts will not be also turned on.
Referring to Figures 1 and 2, the transmission mechanism of existing automatic change-over switch equipment generallys use operation electromagnet to realize
The conversion of two groups of contacts, such as Fig. 1 are moved back and forth by operation high-speed double electromagnet, and then are controlled single-pole double-throw switch (SPDT) and realized from one
Group contact I is transformed into another group of contact II；Such as Fig. 2, it is moved back and forth by operation high-speed double electromagnet, and then control double-pole double throw and open
It closes, realizes that one group of contact I is transformed into another group of contact II.Existing defect: mechanism is complicated, protecting against shock vibration ability is weak, contact
Impact force is larger when division, more, poor reliability of bouncing.
Summary of the invention
In order to overcome the mechanism of the transmission mechanism of existing automatic change-over switch equipment is complicated, protecting against shock vibration ability is weak,
Impact force is larger when Contact Breaking/Making Operations, more, the deficiency of poor reliability of bouncing, and the present invention provides that a kind of mechanism is simple, protecting against shock vibrates
Ability is strong, Contact Breaking/Making Operations when impact force is smaller, spring is few, greatly improve the worm gear type transmission switch of the reliability of work.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of worm gear type transmission switch, including the first worm gear, the second worm gear and worm screw, the both ends of the worm screw are equipped with tooth form
The middle part of section, the worm screw is flat segments, and first worm gear is installed in rotation on the base body in automatic change-over
One end, second worm gear is installed in rotation on the other end of the base body；The worm screw simultaneously with the first worm gear
With the second worm gear engage, the worm screw with to push worm screw move back and forth driving mechanism connect, first worm gear and oneself
Second moving contact of the first moving contact linkage of dynamic changeover switch device, second worm gear and automatic change-over switch equipment joins
It is dynamic.
As a kind of preferred scheme: installing the first pin shaft, first pin shaft and first connecting rod on first worm gear
One end it is hinged, the other end of the first connecting rod and one end of second connecting rod are hinged, the other end of the second connecting rod and institute
The middle part for stating the first movable feeler lever is hinged, the first contact of one end installation and the cooperation of the first static contact of first movable feeler lever, institute
The other end for stating the first movable feeler lever is hinged on the base body；
Second pin shaft is installed, one end of second pin shaft and third connecting rod is hinged, the third connecting rod on second worm gear
The other end and fourth link one end it is hinged, the other end of the fourth link and the middle part of second movable feeler lever are hinged,
Second contact of one end installation and the cooperation of the second static contact of second movable feeler lever, the other end of second movable feeler lever are hinged
On the base body.
Further, the driving mechanism is located at the middle position of worm screw, and the driving mechanism is mounted on the base body
On.
The worm screw is located at the upper end or lower end of first worm gear and the second worm gear.The structure is conducive to assemble, can
Reduce assembly space.
Technical concept of the invention are as follows: the transmission mechanism includes two groups of dynamic and static touchings at automatic transfer switching electric appliance both ends
Head；Drive the connecting rod of moving contact movement；Two worm gears of drive link movement and a worm screw；And the electricity for driving worm screw mobile
Motivation driving mechanism.After the motor operated driving mechanism is powered on, the worm screw is driven to move right, the first worm gear inverse time
Needle rotation drives first connecting rod and second connecting rod movement, opens the first moving contact.At this point, the motor operated driving mechanism is disconnected
Electricity, automatic change-over are in open position.When the motor operated driving mechanism is once again powered up, worm screw continues to move right, the
One worm gear is idle stroke after rotating to certain position, and the first worm gear does not reoperate, and the second worm gear starts to rotate counterclockwise at this time, band
Dynamic third connecting rod and fourth link movement, are closed the second moving contact, automatic change-over completes conversion process.If described electronic
It is not powered off among machine driving mechanism, automatic change-over is continuously finished conversion process.If it is desired to automatic change-over inverse transform, work
It is same as above as principle, only the inverse operation of the motor operated driving mechanism.
Beneficial effects of the present invention mainly show: mechanism is simple, protecting against shock vibration ability is strong, Contact Breaking/Making Operations when impact force compared with
Small, spring less, greatly improves the reliability of work.
Detailed description of the invention
Fig. 1 is a kind of operation principle schematic diagram of the 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 prior art;
Fig. 3 is action process schematic diagram when automatic change-over of the present invention closes a floodgate;
Action process schematic diagram when Fig. 4 is automatic change-over separating brake of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig. 3 and Fig. 4, a kind of worm gear type transmission switch, including the first worm gear 2, the second worm gear 4 and worm screw 3, institute
The both ends for stating worm screw 3 are equipped with tooth form section, and the middle part of the worm screw 3 is flat segments, and first worm gear 2 is installed in rotation on
One end of the base body of automatic change-over, second worm gear 4 are installed in rotation on the other end of the base body；
The worm screw 3 engages with the first worm gear 2 and the second worm gear 4 simultaneously, the worm screw 3 and the driving to push worm screw to move back and forth
Mechanism 10 connects, and first worm gear 2 and the first moving contact 8 of automatic change-over switch equipment link, second worm gear 4 with from
The second moving contact 7 linkage of dynamic changeover switch device.
The transmission mechanism of the automatic change-over switch equipment of the present embodiment is generally included such as flowering structure: automatic change-over
Second worm gear 4 of one end of base body, in the first worm gear 2 of the other end of base body, two worm gears are all to pass through rotation axis
It can be rotated around rotation axis after being fixedly connected；One worm screw 3, and worm screw 3 while and first are installed in the upper end of two worm gears or lower end
Worm gear 2 and the second worm gear 4 are grinned conjunction, and the middle position of the worm screw 3 is equipped with driving mechanism 10；In 4 circumference of the second worm gear
Outer circular edge is equipped with a hole, is fixedly connected in the hole with axis with worm gear, one end of the first connecting rod 5 is installed to the second worm gear
Rotatable movement on the axis installed on 4, one end of third connecting rod 6 are connected with the other end of the fourth link 5, and centre connection is used
Universal joint or axis connection, the third connecting rod 5 and fourth link 6 can make rotating motion；The other end of the fourth link 6 and
The connection of two moving contacts 7, the fourth link 6 and the second moving contact 7 can rotate；It welds one end of second moving contact 7
There is silver contact, the other end is mounted on rotatable movement in base body；The second static contact 11 is installed in one end of base body, described
The position of second static contact 11 is in the lower section of the second moving contact 7, its contact and the second static contact after the second moving contact 7 is rotated down
11 contact is just opposite；
Similarly, the first worm gear 2 on the other end of worm screw 3 connects first connecting rod 1, the other end connection of the first connecting rod 1
The other end of one end of second connecting rod 9, the second connecting rod 9 connects the first moving contact 8, and 8 contact of the first moving contact is just
Lower section is equipped with the first static contact 12, and first static contact 12 is fixedly connected with base body；
The worm screw 3 is driven to move right after the motor operated driving mechanism 10 is powered on, second worm gear 4 is inverse at this time
Hour hands rotation, drives the third connecting rod 5 to move upwards, the fourth link 6 also moves upwards immediately, the fourth link 6
It drives second moving contact 7 to move upwards, opens the second moving contact 7.At this point, the motor operated driving mechanism 10 powers off,
Automatic change-over is in open position (see figure 4).When the motor operated driving mechanism 10 is once again powered up, the worm screw 3 continues
It moves right, second worm gear 4 rotates to after certain position as idle stroke, and the second worm gear 4 does not reoperate, at this time the worm screw
First worm gear 2 of 3 other sides starts to rotate counterclockwise, and the first connecting rod 1 and second connecting rod 9 is driven to act, and makes the first dynamic touching
First 8 closure, automatic change-over complete conversion process.If not powering off among the driving mechanism 10, automatic change-over is continuous
Complete conversion process.If it is desired to automatic change-over inverse transform, working principle are same as above, the only inverse operation of the driving mechanism 10.
Claims (4)
1. a kind of worm gear type transmission switch, it is characterised in that: the transmission mechanism includes the first worm gear, the second worm gear and snail
Bar, the both ends of the worm screw are equipped with tooth form section, and the middle part of the worm screw is flat segments, and first worm gear is installed in rotation on
In one end of the base body of automatic change-over, second worm gear is installed in rotation on the another of the base body
End；The worm screw engages with the first worm gear and the second worm gear simultaneously, the worm screw and the driving to push worm screw to move back and forth
First moving contact of mechanism connection, first worm gear and automatic change-over switch equipment links, second worm gear with from turn
Change the second moving contact linkage of switchgear.
2. worm gear type transmission switch as described in claim 1, it is characterised in that: install the first pin on first worm gear
One end of axis, first pin shaft and first connecting rod is hinged, and the other end of the first connecting rod and one end of second connecting rod are hinged,
The other end of the second connecting rod and the middle part of first movable feeler lever are hinged, one end installation and first of first movable feeler lever
First contact of static contact cooperation, the other end of first movable feeler lever are hinged on the base body；
Second pin shaft is installed, one end of second pin shaft and third connecting rod is hinged, the third connecting rod on second worm gear
The other end and fourth link one end it is hinged, the other end of the fourth link and the middle part of second movable feeler lever are hinged,
Second contact of one end installation and the cooperation of the second static contact of second movable feeler lever, the other end of second movable feeler lever are hinged
On the base body.
3. worm gear type transmission switch as claimed in claim 1 or 2, it is characterised in that: the driving mechanism is located at worm screw
Middle position, the driving mechanism is mounted on the base body.
4. worm gear type transmission switch as claimed in claim 1 or 2, it is characterised in that: the worm screw is located at described first
The upper end or lower end of worm gear and the second worm gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711394622.7A CN109950068A (en) | 2017-12-21 | 2017-12-21 | Worm gear type transmission switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711394622.7A CN109950068A (en) | 2017-12-21 | 2017-12-21 | Worm gear type transmission switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109950068A true CN109950068A (en) | 2019-06-28 |
Family
ID=67005454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711394622.7A Pending CN109950068A (en) | 2017-12-21 | 2017-12-21 | Worm gear type transmission switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109950068A (en) |
-
2017
- 2017-12-21 CN CN201711394622.7A patent/CN109950068A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190628 |
|
| WD01 | Invention patent application deemed withdrawn after publication |