CN100401438C - Safety lock device - Google Patents
Safety lock device Download PDFInfo
- Publication number
- CN100401438C CN100401438C CNB2004100031025A CN200410003102A CN100401438C CN 100401438 C CN100401438 C CN 100401438C CN B2004100031025 A CNB2004100031025 A CN B2004100031025A CN 200410003102 A CN200410003102 A CN 200410003102A CN 100401438 C CN100401438 C CN 100401438C
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- pole
- pole axis
- inhibitor
- axis
- locking device
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Abstract
The invention is directed to a safe locking device capable of being used for preventing generation of a sudden and non-allowed mechanical phenomenon. The safe locking device is composed of (i) a circular pole axis which is connected with an operation system directly or indirectly; (ii) a bracket connected with the pole axis; (ii) a counterpunch restrainer capable of free fall and arranged in an upper direction of the pole axis in a pivot-supporting manner; (iv) a second rigid axis in parallel with the pole axis. The restrainer has a proximal end locking point and a free distal end opposite to the proximal end. A curved edge of the distal end is curved outwards, a curvature center is positioned outside the counterpunch restrainer and provided with a lower end horizontally arranged. The lower end of the counterpunch restrainer when being a normal idle state is contacted with the pole axis. The the ople axis is operated by the operation system to be suddenly moved in a reverse direction, the distal end of the restrainer is sequentially moved upwards till the locking point is contacted with the pole axis so as to change the moving direction of the distal end. The restrainer is positioned between the end of the second axis and the pole axis in a moment to temporarily lock the pole axis, thereby preventing generation of the reverse movement of the operation system.
Description
Technical field
The present invention is relevant with a kind of safe locking device of the system that goes for preventing any unwarranted sudden mechanical movement.
Background technology
Safe locking device is a kind of necessary product when the disadvantageous mechanical movement of restriction.For circuit breaker, safe locking device is the necessary component of circuit breaker.
Circuit breaker is a kind of mechanical switch device, can be under the normal circuit state transmission current, also can be by Artificial Control or at specific abnormal condition (as short circuit) incision outage stream.For the infringement that prevents to bring, must in official hour, end fault current because of rush of current.Circuit breaker is formed by overlapping independently pole shoe usually, and is divided into some rightly, wherein fix for one group, and other pole shoe is can move or telescopic.Removable pole shoe is connected with an operating mechanism.Under normal condition, electric current is normal between pole shoe, and pole shoe contacts with each other.When electric current by the pseudoinstruction or when normally reaching automatic control equipment under the improper current status and interrupting, the current delivery pole shoe is just separated suddenly, divides ETAD expected time of arrival and departure to depend on electromagnetism intensity of force between pole shoe.The moment that pole shoe separates can be because of high tension voltage discharge generation electric arc.
Because electromagnetic force is very strong, fixedly can further produces echo, momentum counterattack or collision between pole shoe and mobile pole shoe, and cause the pole shoe damage.
Designed multiple safety device and prevented this counterattack phenomenon with different usefulness.Safe locking device can or reduce counterattack power between pole shoe by restriction, thereby can effectively alleviate the acceleration damage of pole shoe equipment.
Because the closing, close and to carry out simultaneously of pole shoe, so adopt latch lock unit usually with extremely strong elastic force.But because the rockiness of different springs is variant, bounce-back is fought back phenomenon and still can be taken place, and under many situations, arc ignition is inevitable.
Latch lock unit is generally used for restriction or slows down the pole shoe bounce-back and fight back phenomenon.Described a kind of springlock system of short-circuiting device in No. 4468533 patents of the U.S., it is by use leverage when " disconnections " operate, can prevent to control the break-in lever of mobile pole shoe and brake and collide or rebound from brake.
No. 5793270 patent also described a kind of springlock system, and it is made of the spring of a tape controller, and suddenly separately the time, removable pole shoe contact with controller, thereby prevents the generation of bounce-back counterattack phenomenon at pole shoe.
This springlock is made of 4 to 5 kinds of assemblies, because the flintiness difference of spring can cause displacement to a certain degree, and because spring system directly is subjected to elastic force loss influence, efficient can not reach desired level.
No. 5743385 patent also described a kind of locking device of rebounding and fighting back of being used to prevent, it is made up of an inhibitor and a clip, and inhibitor is connected on the axle, and axle and pole shoe join, and when pole shoe was separated suddenly, inhibitor will be clamped by clip.The situation that this invention also allows inhibitor not clamped by clip takes place, because when counterattack speed is very high, inhibitor has the characteristic that can separate with clip.
Its methodological basis of this paper proposed invention is very simple, and it does not almost have precision element, can control the generation that pole shoe is fought back phenomenon completely effectively.Because its assembly seldom, so manufacturing cost is also low, has fabulous commercialization prospect.The locking device that the present invention describes is widely used, and only is not limited to and uses in circuit breaker.
Summary of the invention
The present invention mainly is made up of a simple safe locking device, is used to prevent the generation of unapproved unexpected mechanical movement.Part of the present invention has: cylindrical pole axis that (i) can partial rotational, it directly or indirectly links to each other with operating system.(ii) support that links to each other with pole axis.(iii) a flat landing-type metal or nonmetal counterattack inhibitor preferentially adopt the pivotal support mode, place up on the pole axis support.The near-end of inhibitor has a lock point, and an end relative with it is the bandy bent limit that reinforces, and its center of curvature is in outside the low-end devices of fighting back inhibitor and laterally placing.When inhibitor was in the inoperative normal condition, low-end devices and pole axis joined.Second (iv) parallel stiff shaft with pole axis.
When beginning partial rotational suddenly by operating system control pole axis, the far-end of inhibitor will move to the pole axis rotation direction.When rotation direction because of the counter motion of operating system during by flip-flop, the far-end of inhibitor can contact the direction of motion that changes the inhibitor far-end up to the lock point owing to its inertia continues to move upward with pole axis.Inhibitor can be in when counter motion between second and the pole axis momently, and second of the far-end of inhibitor contact, a lock point contact pole axis, therefore can lock pole shoe momently, and then prevent the counter motion of operating system.
The more important thing is, operating system comprises the movably current delivery pole shoe that places distant location, wherein a pole shoe directly or indirectly links to each other by a cover intermediate connector with pole axis, when the pole shoe end is separated, cause the unexpected partial rotational of pole axis, fight back inhibitor locking pole axis, and then finally lock intermediate connector and pole shoe, prevent the electric discharge phenomena of fighting back pole shoe.
On the other hand, safe locking device is positioned within the circuit breaker, and when rush of current took place, pole shoe was herein separated by electromagnetic force or pushes open.Safe locking device has prevented the generation of pole shoe counterattack phenomenon.
Also have on the one hand, the invention describes the situation that one or more safe locking devices and one or more pole shoes are connected by intermediate connector.
Description of drawings
Fig. 1: the end view of safety device when circuit is in on-state
Fig. 2: the cross-sectional view of safety device
Fig. 3: when axle rotates or the end view of pole shoe safety device when being separated suddenly.
Fig. 4: when shaft lock puts in place surely or pole shoe fight back the end view of safety device when being suppressed.
Fig. 5: pole shoe separates the side view of safety device when being in idle state suddenly.
Embodiment
Following is explanation about the modal method of operation of the present invention.
Main effect of the present invention is that employing safety device (Fig. 1) prevents suddenly, the generation of mechanical movement without permission.Safety device consists of the following components:
The pole axis of I partial rotational (1) directly or indirectly links to each other with operating system.
The support that II links to each other with pole axis (3).
Free fall style of III is fought back inhibitor, and (5) are supported by the pivot (7) on the support (3), be positioned at pole axis upward to, see Fig. 2.Inhibitor is made by metal or nonmetallic materials, and profile is irregular, and its near-end (11) pivot is lock point (9) to top.The another side of near-end is far-end (13), and there is bent limit its outside, and the center of curvature is positioned at outside inhibitor (5) body.The far-end of inhibitor is heavier than the other parts of inhibitor, and this has just quickened the free fall campaign of inhibitor under the terrestrial gravitation effect.On the cross section low side (15).
Second of IV rigidity (17), parallel with pole axis.
Under the electric current on-state, the position during the normal idle condition of inhibitor be a side (see figure 1) when the Operational System Control aixs cylinder is so rotated, the inhibitor (5) that is in idle state along pole axis will move along the pole axis reversing of motion, as shown in Figure 3.When rotation direction because of the counter motion of operating system during by flip-flop, the far-end of inhibitor can contact the direction of motion that changes the inhibitor far-end up to the lock point owing to its inertia continues to move upward (Fig. 3) with pole axis.Inhibitor can be in when counter motion between second and the pole axis momently, and second of the far-end of inhibitor contact, a lock point contact pole axis, therefore can lock pole shoe momently, and then prevent the counter motion of operating system.Inhibitor falls because of the free graviational interaction of the earth, gets back to the rest position (see figure 5) along the pole axis aspect.
The common application mode of another kind of the present invention is that safety device is placed within the shell, and circuit breaker is exactly one of proper shell.Operating system impels pole axis to begin to rotate.Operating system is made up of a current delivery pole shoe (19,21) that is opposite to distant location, and the transmission pole shoe directly or indirectly links to each other with pole axis by a cover intermediate connector (23).In this a pair of transmission pole shoe, one can be moved (19) usually, and another is fixed (21), and movably pole shoe is connected with pole axis by intermediate connector.When electric current is too high, circuit interruption, pole shoe is separated by powerful electromagnetic force or rebounds, and the used time is depended on the electromagnetism intensity of force that they are separated.Pole shoe separately causes the unexpected partial rotational of pole axis by connector again.The degree of rotating will depend on the structure construction of pole shoe.The direction motion that idle inhibitor is rotated to the upper edge pole axis on the pole axis.When pole shoe is separated by brute force, have the tendency of counterattack owing to impacting fixed surface, cause pole axis to move along rotating in the other direction suddenly.The far-end of inhibitor still can continue to move upward owing to its inertia, contact the change direction up to the lock point with pole axis (Fig. 4) collision, at last when free fall, inhibitor moment is between second and pole axis, and second of the far-end of inhibitor contact, a lock point contact pole axis.With pole axis locking, prevent any backward rotation, and then avoid the motion of connector like this.The pole shoe that links to each other with connector also is locked in the position that is pushed back, and prevents pole shoe generation back discharge.Last inhibitor is because of falling back to the rest position (Fig. 5) along pole axis under the terrestrial gravitation.
The present invention also has a kind of through improved application mode: the inhibitor near-end preferentially is connected with support in the counterattack inhibitor by pivot.Inhibitor profile between near-end and far-end is flat, the oriented curved edge of its low side, and curvature is identical with pole axis.When inhibitor was between second and the pole axis, the axis of fighting back inhibitor lock point and pole axis in line.
The present invention also has a kind of application mode: pole axis is by one or more connection the in intermediate connector and a pair of pole shoe.In addition, pole axis can be connected with one or more pairs of pole shoes by intermediate connector.Similarly, one or more sets safety devices are housed in the casing, priority application is in circuit breaker.When rush of current occurring, can pass through to cut off circuit calibration overload current, thereby pole shoe is separated suddenly, safety device realizes preventing back discharge thus.
Claims (10)
1. safe locking device that prevents emergent unapproved mechanical movement, it is made up of following part:
(1) cylindrical pole axis of partial rotational directly or indirectly links to each other with operating system;
(2) supports that are connected with pole axis;
The free fall style that (3) metals or nonmetallic materials are made is fought back inhibitor, it upwards places on the pole axis support in the pivotal support mode, this inhibitor has a near-end, described near-end has the lock point that is positioned at the pivot top, be equipped with on described near-end opposite can free-moving reinforcing far-end, the bent limit of described far-end is outwardly-bent, the center of curvature is positioned at fights back outside the inhibitor, described inhibitor also has a horizontal low side, and described low side contacts with pole axis at normal rest position;
Second of (4) rigidity parallel with pole axis;
When pole axis carries out partial rotational suddenly by operating system control, the far-end of inhibitor moves to the pole axis rotation direction, and continue upwards, suddenly turn to because of operating system control up to the pole axis rotation direction, this moment, the lock point contacted with the pole axis collision, reversed distal direction of movement, the instantaneous-locking pole axis, inhibitor be in second with pole axis between and the far-end of inhibitor contact second, a lock point contact pole axis, prevent backward rotation, and then prevent that counter motion from appearring in operating system.
2. safe locking device as claimed in claim 1, it is characterized in that: operating system places the current delivery pole shoe of distant location to form by at least one pair of, at least one pole shoe of every centering is movable, and directly or indirectly link to each other with pole axis by a cover intermediate connector, when pole shoe separated, the unexpected partial rotational of pole axis was fought back inhibitor locking pole axis, final locking intermediate connector and pole shoe prevent pole shoe thus and fight back.
3. safe locking device as claimed in claim 1, it is characterized in that: operating system places the current delivery pole shoe of distant location to form by at least one pair of, at least one pole shoe of every centering is movable, and pole axis directly or indirectly continuous by intermediate connector and separately links to each other, when pole shoe separated, the unexpected partial rotational of pole axis was fought back inhibitor locking pole axis, final locking intermediate connector and pole shoe prevent pole shoe thus and fight back.
4. as claim 2 or 3 described safe locking devices, it is characterized in that: pole shoe is separated by electromagnetic force or rebounds.
5. safe locking device as claimed in claim 4 is characterized in that: fight back and suppress body with pivotal support, near near-end.
6. safe locking device as claimed in claim 5 is characterized in that: cylindrical pole axis is vertically placed on the support and firmly to connect.
7. safe locking device as claimed in claim 6 is characterized in that: second also cylindrical.
8. safe locking device as claimed in claim 7, it is characterized in that: surface smoothing between inhibitor near-end and far-end, low side curves inwardly, and curvature is identical with pole axis, so when pole shoe was in the released state rest position, the low side of inhibitor contacted fully with pole axis.
9. safe locking device as claimed in claim 8, it is characterized in that: safe locking device places in the circuit breaker.
10. safe locking device as claimed in claim 9 is characterized in that: one or more sets safe locking devices are connected with one or more pairs of pole shoes by intermediate connector.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN171MU2003 | 2003-02-07 | ||
| IN171/MUM/2003 | 2003-02-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1521783A CN1521783A (en) | 2004-08-18 |
| CN100401438C true CN100401438C (en) | 2008-07-09 |
Family
ID=34308060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100031025A Expired - Fee Related CN100401438C (en) | 2003-02-07 | 2004-02-04 | Safety lock device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100401438C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995029499A1 (en) * | 1994-04-20 | 1995-11-02 | Siemens Aktiengesellschaft | Drive device with a locking device to prevent switch shaft rebound |
| EP0827174A1 (en) * | 1996-09-03 | 1998-03-04 | Eaton Corporation | Circuit breaker with latch preventing rebound of blow open contact arm |
| CN2409604Y (en) * | 2000-03-03 | 2000-12-06 | 常熟开关厂 | Timing and back spring structure for circuit breaker |
-
2004
- 2004-02-04 CN CNB2004100031025A patent/CN100401438C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995029499A1 (en) * | 1994-04-20 | 1995-11-02 | Siemens Aktiengesellschaft | Drive device with a locking device to prevent switch shaft rebound |
| EP0827174A1 (en) * | 1996-09-03 | 1998-03-04 | Eaton Corporation | Circuit breaker with latch preventing rebound of blow open contact arm |
| CN2409604Y (en) * | 2000-03-03 | 2000-12-06 | 常熟开关厂 | Timing and back spring structure for circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1521783A (en) | 2004-08-18 |
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Granted publication date: 20080709 Termination date: 20150204 |
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