KR20160130901A - Power transmission apparatus for circuit breaker - Google Patents

Power transmission apparatus for circuit breaker Download PDF

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Publication number
KR20160130901A
KR20160130901A KR1020150062619A KR20150062619A KR20160130901A KR 20160130901 A KR20160130901 A KR 20160130901A KR 1020150062619 A KR1020150062619 A KR 1020150062619A KR 20150062619 A KR20150062619 A KR 20150062619A KR 20160130901 A KR20160130901 A KR 20160130901A
Authority
KR
South Korea
Prior art keywords
panels
power transmission
screw
moving block
circuit breaker
Prior art date
Application number
KR1020150062619A
Other languages
Korean (ko)
Inventor
유재구
Original Assignee
현대중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020150062619A priority Critical patent/KR20160130901A/en
Priority to CN201610282467.9A priority patent/CN106098482B/en
Publication of KR20160130901A publication Critical patent/KR20160130901A/en

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Classifications

    • 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
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • 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
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
    • H02B11/127—Withdrawal mechanism

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)

Abstract

The present invention relates to a power transmission device for a circuit breaker. The power transmission device for a circuit breaker comprises: a pair of panels; at least one stationary plate which is installed upwards from one panel among the panels, wherein a through hole is formed in the stationary plate; a screw which penetrates the through hole of the stationary plate and rotates; and a moving block which is screw-coupled with the screw and experiences a straight line motion between the panels as the screw rotates, wherein at least one support slot is formed on at least one among the panels, and at least one support bump, which is inserted into the support slot to move, is formed on at least one side surface of the moving block. The power transmission device has strong mechanical durability thanks to the support slot and the support bump. Therefore, it is possible to prevent the power transmission device from being deformed due to an excessive load in advance.

Description

[0001] POWER TRANSMISSION APPARATUS FOR CIRCUIT BREAKER [0002]

More particularly, the present invention relates to a power transmission device for a circuit breaker, and more particularly to a power transmission device for a circuit breaker, which is capable of converting a rotational motion into a linear motion and then a linear motion into a rotational motion, To a power transmission device for a circuit breaker.

Generally, a circuit breaker is a type of circuit breaker that cuts off current when an accident such as a load, a ground, or a short circuit occurs in a transmission, a substation or an electric circuit, and is mainly used for a low voltage device.

Such a circuit breaker is used with its main body drawn into the cradle. When the main body is placed on a rail provided in the cradle and the handle is rotated, the main body can be moved to be positioned at an operation position (a pull-in position), a test position, or a pull-out position. An example of such a circuit breaker is illustrated in Korean Patent Laid-Open Publication No. 2013-0011476.

Fig. 1 is a view showing an operating state in which a main body is drawn into a cradle, which corresponds to Fig. 3 of Korean Patent Laid-Open Publication No. 2013-0011476.

As shown in the figure, when the main body 20 of the circuit breaker is mounted on the cradle 10, the pull-out handle 50 is inserted into the handle insertion hole and then rotated in a clockwise direction, for example, So that the main body connected to the main body is moved from the pull-out position to the pull-in position in the cradle.

Conversely, if the pull-out handle 50 is turned, for example, counterclockwise, the main body 20 of the circuit breaker comes out to the pull-out position.

However, for example, when the main body of the circuit breaker is drawn into the cradle, a strong repulsive force is generated due to a heavy load of the main body. Thus, the screw and its associated internal components, in particular the power transmission device, are subject to excessive load, distorted as it is twisted or warped, and as a result, the power transmission device becomes inoperable and the main body of the breaker can not be drawn or drawn.

Accordingly, the present invention provides a power transmission device for a circuit breaker that can convert a rotational motion into a linear motion and then a linear motion into a rotational motion, and mechanically excellent durability so that the body of the circuit breaker can be stably pulled into and out of the cradle It has its main purpose.

A power transmission device according to an embodiment of the present invention includes: a pair of panels; At least one fixing plate installed upright on one of the panels and having a through hole; A screw rotating through the through hole of the fixing plate; And a moving block that is threadedly engaged with the screw and linearly moves between the panels in accordance with the rotation of the screw, at least one supporting slot is formed in at least one panel of the panels, And at least one support protrusion is formed on at least one side surface of the support slot so as to be inserted into the support slot.

As described above, according to the present invention, the power transmission device has excellent durability mechanically by the support slot and the support protrusion, and it is possible to prevent the power transmission device from being deformed due to an excessive load.

As a result, the reliability and the commerciality of the circuit breaker are ultimately improved.

1 is a view schematically showing an operating state in which a main body is drawn into a cradle.
2 is an exploded perspective view illustrating a power transmitting apparatus for a circuit breaker according to an embodiment of the present invention.
3 is a perspective view showing only the power transmission apparatus shown in Fig.
4 is a perspective view of the power transmission device with one side panel being omitted and showing the inside thereof.
5 is an exploded perspective view showing a main part of the power transmission device.
6 and 7 are views for explaining the operating state of the power transmitting apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

3 is a perspective view showing only a power transmitting apparatus shown in FIG. 1, and FIG. 4 is a perspective view showing a power transmitting apparatus for a circuit breaker according to an embodiment of the present invention, And FIG. 5 is an exploded perspective view showing a main portion of the power transmission device.

As shown in these figures, the power transmission device 30 for a breaker according to an embodiment of the present invention includes a pair of panels 31; At least one fixing plate (33) installed upright on one of the panels (31) and having a through hole (43); A screw (35) rotating through the through hole of the fixing plate; And a moving block (37) screwed to the screw and linearly moving between the panels in accordance with the rotation of the screw, wherein at least one support slot (41) is formed in at least one of the panels, On at least one side of the block, at least one support protrusion (47) is formed which is inserted and moved into the support slot.

First, the power transmission device 30 of the present invention is used in a circuit breaker, which comprises a cradle 10 for providing an enclosure with a connection 12, (20).

When the main body 20 of the breaker is placed on the rail 14 of the cradle 10 at the withdrawal position and the pull-out handle 50 (see FIG. 1) is rotated, (12). ≪ / RTI >

In FIG. 2, reference numeral 26 denotes a position locking means operated by a handle via the power transmitting device of the present invention, and reference numeral 16 is a groove-formed plate to which the position locking means is fastened. A drive shaft 28 having a polygonal cross section of the position locking means is associated with the power transmission of the present invention, as will be described below.

The pair of panels 31 form a space therebetween. A fixing plate 33 is fixed to one of the panels 31 at a substantially right angle. A through hole 43 is formed in the fixing plate.

At least one support slot 41 is formed in at least one of the panels 31. [ The support slot is formed parallel to the longitudinal direction of the screw 35 and has a predetermined length. The support protrusion 47 of the movable block 37 is inserted into the support slot, and the support protrusion can move along the support slot.

The screw 35 is rotatably coupled to the through hole 43 of the fixing plate 33 and can be rotated by the draw-out handle 50 with the screw cap 40 interposed therebetween. In order to stably support the screw and prevent warpage or the like, it is preferable that a pair of or more fixing plates are provided and appropriately disposed on the panel 31 along the longitudinal direction of the screw.

The moving block 37 can be screwed to the screw 35 and reciprocated linearly. To this end, the moving block is provided with a screw hole 45 in which a screw can be inserted into the first side surface and a screw thread is formed on the inner circumferential surface. It is preferable that such a moving block is integrally formed so as to secure a certain level of rigidity and improve durability.

At least one support protrusion 47 is formed on the second side surface and the third side surface of the moving block 37, which are connected to both sides of the first side surface. The support protrusion can be inserted into the support slot 41 formed in the panel 31 and move along the support slot as described above.

The support protrusions 47 are formed to have a substantially elliptical or rectangular shape so that they can be in surface contact when they contact the side wall of the support slot 41, thereby obtaining an advantageous effect that the load can be dispersed and supported.

In addition, the engagement of the support slot 41 with the support projection 47 also serves to guide the movement block 37 to linearly move along the longitudinal direction of the screw 35.

An insertion groove 49 is formed in the moving block 37, and an actuating part 39 is rotatably inserted in the insertion groove. The moving block and the actuating part are coupled to each other by the pin 32. A pinhole 42 having a predetermined length is formed in the moving block so that the actuating part can rotate when the moving block linearly moves. Of course, a pinhole 34 is also formed in the operating portion.

An engaging hole 38 having a polygonal shape is formed in the operating portion 39 and a drive shaft 28 having a polygonal cross section of the position locking means 26 can be inserted into the engaging hole.

6 and 7 are views for explaining the operating state of the power transmitting apparatus.

For example, when moving the main body 20 of the breaker and the cradle 10 to the withdrawn position, the user moves the main body of the breaker and the cradle to the ready position.

Next, when the user inserts the pull-out handle 50 into the handle insertion hole 52 and engages with the screw cap 40, the pull-out handle 50 is rotated to rotate the screw 35. Then, the moving block 37 engaged with the screw 35 is moved toward the fixing plate 33 adjacent to the handle insertion hole 52.

As the moving block 37 linearly moves, the actuating part 39 engaged with the pin 32 with respect to the moving block is pivoted, at which time the pin 32 reciprocates within the pinhole 42 of the moving block do.

The driving shaft 28 of the position locking means 26 is also rotated together with the rotation of the operating portion 39 so that the position locking means is fastened in the groove of the plate 16. [ Thereby, the movement between the main body 20 and the cradle 10 is completed.

The movement of the main body 20 of the circuit breaker to the drawing-out position is released to the drawing-out position when the drawing-out handle 50 is turned in the opposite direction to the drawing-in direction.

As described above, for example, when the main body of the circuit breaker is drawn into the cradle, a strong repulsive force is generated due to a heavy load of the main body. However, the power transmitting device for a circuit breaker according to an embodiment of the present invention has mechanical superior durability So that it is possible to prevent the power transmission device from being deformed due to an excessive load.

More specifically, in the present invention, a movable block is formed as a unitary molded product, and a supporting slot and a supporting protrusion are interposed between the movable block and the panel, So that it can withstand the support force between the projections.

Particularly, the support protrusions are elongated by a predetermined length so as to have an elliptical shape or a rectangular shape, so that they can be in surface contact when they contact the side wall of the support slot, thereby supporting the load in a dispersed manner, So that a sliding motion can be performed.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

For example, in the present specification, an example is described in which a support slot is formed in the panel and a support protrusion is provided in the movable block. However, the present invention is not limited to this, and the support protrusion may be provided on the panel by changing dimensions, A support slot may be formed.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Cradle 20: Body
30: Power transmission device 50:

Claims (5)

A pair of panels;
At least one fixing plate installed upright on one of the panels and having a through hole;
A screw rotating through the through hole of the fixing plate; And
And a moving block that is linearly moved between the panels according to the rotation of the screw,
/ RTI >
At least one support slot is formed in at least one of the panels,
Wherein at least one side surface of the moving block is provided with at least one supporting protrusion inserted into the supporting slot. The method according to claim 1,
And the movable block is integrally formed. The method according to claim 1,
Wherein the support protrusions are formed to have an elliptical shape or a rectangular shape. 4. The method according to any one of claims 1 to 3,
Wherein the moving block has an insertion groove formed therein, an operation portion is rotatably inserted in the insertion groove,
Wherein the actuating part is engaged with the drive shaft so that the drive shaft rotates together with the rotation of the actuating part. 5. The method of claim 4,
The actuating part is coupled to the moving block with a pin,
And a pinhole having a predetermined length is formed in the moving block.
KR1020150062619A 2015-04-30 2015-05-04 Power transmission apparatus for circuit breaker KR20160130901A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150062619A KR20160130901A (en) 2015-05-04 2015-05-04 Power transmission apparatus for circuit breaker
CN201610282467.9A CN106098482B (en) 2015-04-30 2016-04-29 The insertion of breaker and withdrawing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150062619A KR20160130901A (en) 2015-05-04 2015-05-04 Power transmission apparatus for circuit breaker

Publications (1)

Publication Number Publication Date
KR20160130901A true KR20160130901A (en) 2016-11-15

Family

ID=57525477

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150062619A KR20160130901A (en) 2015-04-30 2015-05-04 Power transmission apparatus for circuit breaker

Country Status (1)

Country Link
KR (1) KR20160130901A (en)

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