CN100514520C

CN100514520C - Circuit breaker electric operation gear

Info

Publication number: CN100514520C
Application number: CNB2006100388667A
Authority: CN
Inventors: 王炯华; 唐伟; 陈建红
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2006-03-08
Filing date: 2006-03-08
Publication date: 2009-07-15
Anticipated expiration: 2026-03-08
Also published as: CN1835142A

Abstract

Electrodynamic operating mechanism consists of electric reduction gear, executive device, and supporting rack. The electric reduction device includes electrical motor, transmission shafts in each stage, and transmission gears in each stage collocated on transmission shafts in each stage, and single effect unit. The executive device includes main drive shaft, executing gear with rollers fixed on bottom of the main drive shaft, and sliders matched to rollers. Characters are that the reduction device includes a box body and a box cover; each shaft is pivoted to the box body and the box cover; each gear and reduction device is located inside the box body. The electrical motor installed on the box cover perpendicularly. Extending to the box body, the output shaft is connected to gear in each stage. Advantages are: compact structure, high use ratio of space, no noise and no vibration, implementation of on/off between reduction device and main drive shaft, etc.

Description

Electric operating mechanism of circuit-breaker

Technical field

The present invention relates to a kind of electric operating mechanism of circuit-breaker, more particularly is the dual-purpose circuit breaker operation mechanism of electric/manual on the power transmission and transformation network mesolow circuit breaker, belongs to low tension switch attachment technique field.

Background technology

The existing circuit breaker motor-operating mechanism, as the final drive shaft in the final controlling element, all disperse and be arranged in the mounting bracket with uncovering as the power transmission shafts at different levels of electronic deceleration device and travelling gear at different levels, for fear of the electronic deceleration device driving of lubricant pollution and circuit breaker that be positioned at electronic deceleration device below just, therefore seldom even do not use lubricating oil for travelling gears at different levels, thereby make that not only noise was serious, power consumption is big when travelling gears at different levels were worked, and cause damage easily; Especially, travelling gears at different levels show as and disperse to install, because it is subjected to force direction, size all different, thereby there is tangible impact shock when making motor-operating mechanism work, loosening easily between the slide block of final controlling element and circuit breaker handle, the influence and the fiting effect of circuit breaker bring circuit breaker disjunction, combined floodgate thereupon, detain the reliable in action reduction of each operation again, have the anxiety that causes serious consequence.Chinese patent CN00112313.0 discloses name and has been called " transmission device in the electric operating mechanism of circuit-breaker ", non-return device in this transmission device, carry out gear, roller is installed on the same final drive shaft as final controlling element, cause complex structure, must satisfy the requirement that the circuit breaker of different frames current class is equipped with corresponding electronic deceleration device, be embodied in, when changing appears in the framework current class of circuit breaker, corresponding electronic deceleration device comprises non-return device, travelling gears at different levels, power transmission shafts at different levels need be reinstalled without exception at all interior parts, although mounting means remains identical with component number.So,, make assembling bother in order to reinstall travelling gears at different levels, non-return device etc.In addition, facilitate, therefore must do the volume of electronic deceleration device greatly, thereby cause the unfavorable factor that the space availability ratio of attending to one thing and lose sight of another is little, volume is big, reliability is low in order to give to ressemble.

Summary of the invention

Task of the present invention be to provide a kind of compact conformation, space availability ratio height, disjunction, combined floodgate, again detain each good operation reliability, can avoid noise and vibration, need not to use the electric operating mechanism of circuit-breaker that embodies the quick effect of assembling because of the circuit breaker frame current class occurs changing going to reinstall such as non-return device and travelling gear at different levels and output shaft at different levels.

Task of the present invention is finished like this, a kind of electric operating mechanism of circuit-breaker, comprise electronic deceleration device 1, final controlling element 2 and the mounting bracket 3 that is used to install electronic deceleration device 1 and final controlling element 2, electronic deceleration device 1 comprises motor 11, power transmission shafts at different levels and be configured in travelling gears at different levels and non-return device 17 on the power transmission shafts at different levels, final controlling element 2 comprises final drive shaft 21 and is fixedly arranged in being used for and travelling gears at different levels that link and execution gear 22 that also carry roller 221 of transmission and the slide block 23 that drives by roller 221 that matches with roller 221 mutually of final drive shaft 21 bottoms, it is characterized in that described electronic deceleration device 1 also includes one and is used for fixing the box body 13 on mounting bracket 3 tops and is configured in lid 12 on the box body 13; Described power transmission shaft hub setting at different levels and is configured in the box chamber that gears at different levels on the power transmission shafts at different levels and non-return device 17 are arranged in box body 13 on box body 13 and lid 12; Described motor 11 hangs down and puts on lid 12, and the output shaft of motor 11 is stretched in the box chamber and is connected with travelling gears at different levels.

The distolateral wall of one of box body 13 of the present invention offers one and is used for supplying the execution gear 22 of final controlling element 2 and the execution gear connector 131 that described travelling gears at different levels are connected.

Power transmission shaft at different levels of the present invention comprises one-level, secondary output shaft 14,15 and final stage output shaft 16, described travelling gear at different levels comprises the motor output shaft gear 111 and first to the 6th gear 141,142,151,152,161,162, one-level, secondary, final

stage output shaft

14,15,16 two ends respectively with box body 13 and lid 12 hub settings, motor output shaft gear 111 is located on the motor output shaft of the motor 11 that is stretched in the box chamber, nibble with second gear 142 and to join, second gear 142, first gear 141 is located on the one-level output shaft 14 coaxially, first gear 141 and the 4th gear 152 are nibbled and are joined, the 4th gear 152, the 3rd gear 151 is located on the secondary output shaft 15 coaxially, the 3rd gear 151 is meshed with the 5th gear 161, the 5th gear 161, the 6th gear 162 coaxial being located on the final stage output shaft 16, the 6th gear 162 are nibbled mutually with the execution gear 22 of actuator 2 at execution gear connector 131 places and are joined.

Non-return device 17 of the present invention comprises first, second clutch 171,172 that both mate with each other, and first, second clutch 171,172 is installed in respectively on first, second gear 141,142 of being located on the one-level output shaft 14.

Non-return device 17 of the present invention comprises first, second clutch 171,172 that both mate with each other, and first, second clutch 171,172 is installed in respectively on the 3rd, the 4th gear of being located on the secondary output shaft 15 151,152.

Non-return device 17 of the present invention comprises first, second clutch 171,172 that both mate with each other, and first, second clutch 171,172 is installed in respectively on the 5th, the 6th gear of being located on the final stage output shaft 16 161,162.

Non-return device 17 of the present invention also includes a compression spring 173, and this compression spring 173 is set on one-level, secondary, final

stage output shaft

14,15,16 any one.

One of the present invention's advantage compared with the prior art constitutes a module by box body 13 and the lid of setting up 12 with electronic deceleration device 1, and compact conformation, space availability ratio are improved; Two, can replenish and supply lubricating oil travelling gears at different levels, and lubricating oil can be not dirty and be positioned at the circuit breaker of electronic deceleration device 1 below that occurs with the modelling form, therefore can realize noiseless and friction; Three, become non-return device 17 by on the final drive shaft 21 of in the past being located at final controlling element 2 on the arbitrary grade of travelling gear being located at electronic deceleration device 1, and be located in the box body 13, can realize the clutch of electronic deceleration device 1 and final drive shaft 21 automatically; Four, only need the relative position of different stroke alteration rollers 221 on execution gear 22 according to the circuit breaker handle of respective frame current class, just can mate with the circuit breaker of different frames current class, and need not non-return device 17, power transmission shaft at different levels, travelling gear at different levels be ressembled, therefore can avoid loaded down with trivial details effectively because of changing the assembling that compliant fuser brought.

Description of drawings

Fig. 1 is the schematic diagram of electric operating mechanism of circuit-breaker of the present invention.

Fig. 2 is an example structure figure of the preferred electronic deceleration device 1 of the present invention.

Fig. 3 is the embodiment schematic diagram of the another kind of version of non-return device 17 of the present invention.

Embodiment

In Fig. 1, final controlling element 2 as electric operating mechanism of circuit-breaker of the present invention, its final drive shaft 21 is supported on first mounting bracket 31 of mounting bracket 3 by axle bed 212, and the upper end of final drive shaft 21 is a handle button 211, by the manual operation of handle button 211 enforcements to whole final controlling element 2.The execution gear 22 of final controlling element 2 is fixed on the bottom of final drive shaft 21, as can be seen from Figure, this execution gear 22 is to be meshed with the 6th gear 162 of electronic deceleration device 1, the roller 221 of carrying out gear 22 is with riveted way or other similar fashion and 22 riveted joints of execution gear, match with the elongated slot 231 of slide block 23, more particularly roller 221 is meshed with the elongated slot 231 of slide block 23.When carrying out gear 22 rotations, order about slide block 23 by roller 22 and move, and then stir the circuit breaker handle 41 of the circuit breaker 4 that is stretched in the slide block 23 by slide block 23, use and embody disjunction, combined floodgate, detain each operation again.First support 31 becomes mounting bracket 3 by screw with second support, 32 associative structures, and second support 32 is used for fixing with circuit breaker 4 by screw, is fixed on the support 3 as electronic deceleration device 1 of the present invention.

In Fig. 2, the electronic deceleration device 1 that organically constitutes an integral module comprises motor 11, lid 12, box body 13, motor output shaft gear 111, one-level, secondary, final

stage output shaft

14,15,16, first to the 6th gear 141,142,151,152,161,162, non-return device 17, motor is fixing with lid 12 with the motor fixing hole 122 that is preset on the lid 12 by means of screw, promptly be fixed in vertical mode on the lid 12, so-called vertical mode is meant that motor output shaft passed through in the box chamber that lid 12 is stretched over box body 13 with form longitudinally.Described motor output shaft gear 111 can be fixed on the motor output shaft by key by means of flat key, and be meshing with each other with second gear 142, second gear 142, first gear 141 is set on the one-level output shaft 14, first gear 141 and the 4th gear 152 are meshing with each other, the 4th gear 152 and the 3rd gear 151 are with being located on the secondary output shaft 15, and the 3rd gear 151 and the 5th gear 161 are nibbled mutually and are joined, with being located at a pair of the 5th on the final stage output shaft 16, the 6th gear 161, the 6th gear in 162 is meshed with the execution gear 22 of final controlling element 2, thereby has constituted the drive connection of the chain reaction between power transmission shaft at different levels of the present invention and the travelling gear at different levels.Show the execution gear connector 131 that is opened in box body 13 1 ends in the drawings, be achieved by this execution gear connector 131 and make the 6th gear 162 and execution gear 22 intermeshing windows, make electronic deceleration device 1 connected to each other with final controlling element 2.

In Fig. 2, the applicant has provided the non-return device 17 of electronic deceleration device 1 of the present invention has been selected preferred embodiment of being located on the 5th, the 6th gear 161,162, specifically be that downside central projection at the 5th gear 161 prolongs the engaging tooth that becomes arc forward to rise, constitute first clutch 171 by this engaging tooth; Upside central projection at the 6th gear 162 prolongs into the engaging tooth that reverse arc rises, and constitutes second clutch 172 by this engaging tooth, and both are corresponding mutually for first, second clutch 171,172.Be understood that out, on first, second gear 141,142 or the 3rd, the 4th gear 151,152, can dash forward equally and prolong into the engaging tooth that suitable, reverse arc rises, thus obtain corresponding or claim equivalence by the shown non-return device 17 of this figure.When non-return device 17 is located on the 5th, the 6th gear 161,162, so the 5th gear 161 with as the 6th gear 162 of output gear by non-return device 17 same through-drive; In like manner, when non-return device 17 was located on first, second gear 141,142, then this two gear was realized same through-drive by non-return device 17; When non-return device 17 was located on the 3rd, the 4th gear 151,152, this two gear was realized same through-drive by non-return device 17 so.Keeping the relation of following in sb's footsteps between compression spring 173 and the non-return device 17, promptly when non-return device 17 is located on the 5th, the 6th gear 161,162 to be illustrated as example, compressing spring 173 so just is located on the final stage output shaft 16, if changing, non-return device is located on first, second gear 141,142, compress spring 173 so and be located on the one-level output shaft 14, all the other in like manner.

As soon as electronic deceleration device 1 assembling of the present invention is finished, then passed through lid fixing hole 121 on the lid 12 until revolving and fixing hole 132 to box body 13 is realized lid 12 fixing with box body 13 with screw.The upper end of one-level, secondary, final

stage output shaft

14,15,16 corresponds respectively in one-level on the lid 12, secondary, the final stage output shaft hole 123,124,125 just, and the lower end is then corresponding in the corresponding hole on box body 13 diapires.

In Fig. 3, non-return device 17 is a unilateral bearing, is arranged in the bearing pedestal chamber that extends any one the gear central authorities in the second, the 4th, the 6th gear 142,152,162.Because present embodiment figure is to be example to be located in the bearing pedestal chamber that the 6th gear 162 central authorities are extended, and therefore, matches with final stage output shaft 16.In addition, non-return device 17 also can be the version such as ratchet, ratchet, makes corresponding gear drive corresponding output shaft rotation in one direction as long as can satisfy, and forms on another direction and skids, the requirement of gear idle running is got final product, so the present invention needn't be one by one thoroughly to lift to the greatest extent.

Narrate the course of work of electric operating mechanism of circuit-breaker of the present invention in conjunction with Fig. 1 and Fig. 2.During electric operating, motor 11 one-directional rotation, drive motor output shaft gear 111, because motor output shaft gear 111 is meshed with second gear 142, second gear 142 is rotated, again because of second gear 142 and first gear, 141 formation one, therefore drive the 4th gear 152 by first gear 141, be to be one also with the 3rd gear 151 because of the 4th gear 152, therefore the 3rd gear 151 drives the 5th gear 161 is just being changeed, non-return device 17 works, specifically be, the 5th gear 161 and the 6th gear 162 are because the compressing of compression spring 173 makes first clutch 171 and the engaging tooth engagement of the second clutch 172 on the 6th gear 162, then the 5th gear 161 and the same through-drive of the 6th gear 162 realizations on the 5th gear 161.At this moment, the 6th gear 162 rotates counterclockwise, drive clockwise rotates with the execution gear 22 of the final controlling element 2 of its engagement, roller 221 is done motion clockwise thereupon, driving sliding block 23 is made linear longitudinal movement, drive the circuit breaker handle 41 of circuit breaker 4, finish disjunction, combined floodgate, detain each operation again.

During manual operation, by being inserted into the handle button 211 at final drive shaft 21 tops, operation final drive shaft 21 is done motion clockwise, circuit breaker handle 41 operations to circuit breaker 4, at this moment, rotate counterclockwise with the 6th gear 162 of carrying out gear 22 engagements, the engaging tooth of first, second clutch 171,172 of non-return device 17 skids because of arc rises, five, the 6th gear 161,162 is separated, and ensures that manual operation is not subjected to the influence of electronic deceleration device 1.

In electric operating or manual operation process, electronic deceleration device 1 is realized and the connected of final drive shaft 21 automatically by its non-return device 17, need not increase additional attachments, therefore can save parts and makes structure comparatively simple; Motor 11, power transmission shaft at different levels, travelling gear at different levels, non-return device 17 are constituted an electronic slowdown module of unidirectional transmission, no longer non-return device 17 is resembled and be arranged on the final drive shaft 21 of final controlling element 2 prior art, and only need the execution gear 22 that carries roller 221 is set on the final drive shaft 21, make simple and compact for structure to ultimate attainment degree; Especially, corresponding different rated current level breaker 4, only need the different stroke alteration rollers 221 and the relative position of carrying out gear 22 of corresponding circuit breaker handle 41, and need not to change for arbitrary parts of the modular electronic deceleration device 1 that shows by Fig. 2 without exception, thereby the space availability ratio that can make electronic deceleration device 1 obtains useful raising, and then brings the excellent effect to the smaller volume of whole electric operating mechanism of circuit-breaker; The travelling gears at different levels of electronic deceleration device 1, execution gear connector 131 places that 17 of non-return devices are offered on

box body

13 and 22 engagements of execution gear, being different from the existing electric operating mechanism of circuit-breaker travelling gears at different levels disperses and is installed on the mounting bracket 3 with uncovering, thereby make first to the 6th gear 141 in the box chamber that is integrated in box body 13,142,151,152,161,162 and motor output shaft gear 111 can work having under the lubricated oil condition, can reduce noise and impact shock valuably, avoid loosening, electric operating mechanism of circuit-breaker and circuit breaker 4 are fitted to each other reliably, have promptly ensured the disjunction of circuit breaker 4, close a floodgate, detain the reliability of each operation again.In view of above strong point, electric operating mechanism of circuit-breaker of the present invention is specially adapted to the miniature circuit breaker that overall dimension is restricted.

Claims

1, a kind of electric operating mechanism of circuit-breaker, comprise electronic deceleration device (1), final controlling element (2) and the mounting bracket (3) that is used to install electronic deceleration device (1) and final controlling element (2), electronic deceleration device (1) comprises motor (11), power transmission shafts at different levels and be configured in travelling gears at different levels and non-return device (17) on the power transmission shafts at different levels, final controlling element (2) comprises final drive shaft (21) and is fixedly arranged in being used for and travelling gears at different levels that link and execution gear (22) that also carry roller (221) of transmission and the slide block (23) that drives by roller (221) that matches with roller (221) mutually of final drive shaft (21) bottom, it is characterized in that described electronic deceleration device (1) also includes one and is used for fixing the box body (13) on mounting bracket (3) top and is configured in lid (12) on the box body (13); Described power transmission shaft hub setting at different levels and is configured in the box chamber that gears at different levels on the power transmission shafts at different levels and non-return device (17) are arranged in box body (13) on box body (13) and lid (12); Described motor (11) hangs down and puts on lid (12), and the output shaft of motor (11) is stretched in the box chamber and is connected with travelling gears at different levels.

2, electric operating mechanism of circuit-breaker according to claim 1 is characterized in that one of described box body (13) distolateral wall offers one and is used for supplying the execution gear (22) of final controlling element (2) and the execution gear connector (131) that described travelling gears at different levels are connected.

3, electric operating mechanism of circuit-breaker according to claim 1, it is characterized in that described power transmission shaft at different levels comprises one-level, secondary output shaft (14,15) and final stage output shaft (16), described travelling gear at different levels comprises the motor output shaft gear (111) and first to the 6th gear (141,142,151,152,161,162), one-level, secondary, final stage output shaft (14,15,16) two ends respectively with box body (13) and lid (12) hub setting, motor output shaft gear (111) is located on the motor output shaft of the motor (11) that is stretched in the box chamber, nibble with second gear (142) and to join, second gear (142), first gear (141) is located on the one-level output shaft (14) coaxially, first gear (141) is nibbled with the 4th gear (152) and is joined, the 4th gear (152), the 3rd gear (151) is located on the secondary output shaft (15) coaxially, the 3rd gear (151) is meshed with the 5th gear (161), the 5th gear (161), the 6th gear (162) is coaxial to be located on the final stage output shaft (16), and the 6th gear (162) is located to nibble mutually with the execution gear (22) of actuator (2) and joined carrying out gear connector (131).

4, electric operating mechanism of circuit-breaker according to claim 3, it is characterized in that first, second clutch (171,172) that described non-return device (17) comprises both and mates with each other, first, second clutch (171,172) is installed in respectively on first, second gear (141,142) of being located on the one-level output shaft (14).

5, electric operating mechanism of circuit-breaker according to claim 3, it is characterized in that first, second clutch (171,172) that described non-return device (17) comprises both and mates with each other, first, second clutch (171,172) is installed in respectively on the 3rd, the 4th gear of being located on the secondary output shaft (15) (151,152).

6, electric operating mechanism of circuit-breaker according to claim 3, it is characterized in that first, second clutch (171,172) that described non-return device (17) comprises both and mates with each other, first, second clutch (171,172) is installed in respectively on the 5th, the 6th gear of being located on the final stage output shaft (16) (161,162).

7, electric operating mechanism of circuit-breaker according to claim 3, it is characterized in that described non-return device (17) also includes a compression spring (173), this compression spring (173) is set on one-level, secondary, final stage output shaft (14,15,16) any one.