KR20020084460A - Transmission link apparatus for electric power equipment - Google Patents

Abstract

PURPOSE: A motor link apparatus for a power device is provided to allow components to be easily assembled with each other by easily correcting assembling position, while preventing assembly error. CONSTITUTION: A motor link apparatus comprises a first spline shaft unit(33) arranged over a predetermined range at one of a driving shaft(31) or a slave shaft(35) along the axial direction; an arm assembly including a coupler(43) having a spline portion engaged with the first spline shaft unit, and a first arm(47a) and a second arm(47b) opposed with each other centering from the coupler, along the thickness-wise direction of the coupler and coupled with each other such that the arm assembly rotates integrally with the coupler; and a motor link(25) having an end connected to first and second arms such that the motor link moves relatively to first and second arms, and the other end connected to the driving shaft or the slave shaft such that the motor link moves relatively to the driving shaft or the slave shaft.

Description

Electric link device for power equipment {TRANSMISSION LINK APPARATUS FOR ELECTRIC POWER EQUIPMENT}

The present invention relates to an electric link device for power equipment, and more particularly, it is possible to combine a variety of angles to facilitate the correction of the assembly position, to prevent the assembly failure due to the accumulated tolerance, etc. It relates to an electric link device for power equipment.

In general, the high-voltage current generated and boosted at the power plant and transmitted to the primary substation is provided to the secondary substation or the customer through the distribution system formed in the ground or the process after the voltage drop in the primary substation.

In the distribution system, distributors such as gas insulated switchgear (GIS), ring main unit (RMU), gas circuit breaker (GCB), vacuum circuit breaker (VCB), and ACB It is equipped with power equipment such as breakers for water / distribution such as air circuit breakers.

These power devices are provided with a breaker such as a vacuum interrupter interposed with a rated conduction capacity between the busbar side and the load side cable, and an operation mechanism for inputting and breaking the breaker by manual or electric force. An electric link device is provided between the operating device and the breaker to transmit the output of the operating device to the breaker.

1 and 2 are perspective views showing the electric linkage region of the conventional power equipment, respectively, FIG. 3 is an enlarged view of the spline shaft of FIG. 1, FIG. 4 is a front view of the arm of FIG. 1, and FIG. 4 is a longitudinal cross-sectional view. As shown in these drawings, a plurality of vacuum circuit breakers 1 are spaced apart from each other side by side in the horizontal direction between the bus bar side and the load side, and a movable electrode is provided with respect to a fixed electrode on one side of each vacuum circuit breaker 1. The movable electrode drive shaft 3 which drives each other and is detachably connected is formed to extend along the longitudinal direction.

One driven shaft (5) which is horizontally disposed in the longitudinal direction of the movable electrode driving shaft (3) on one side of the movable electrode driving shaft (3) being driven by rotation to receive the power so that each movable electrode can be simultaneously inserted and blocked with respect to the fixed electrode (5). ) Is installed.

One side of the vacuum circuit breaker 1 is provided with an operating mechanism unit 9 to drive the driven shaft 5 forward and reverse by manual or electric force, and the operating mechanism unit 9 includes a plurality of arms and links interoperable with each other, It comprises a plurality of springs for providing elastic force to them, a gear and a pair of support frames 11 for supporting them.

The lower side of the support frame 11 is provided with a drive shaft 13 so that a predetermined driving force can be output from the operating mechanism 9 when there is an external operation. An electric link device is interposed between the drive shaft 13 and the driven shaft 5 to transmit the driving force of the drive shaft 13 to the driven shaft 5, and at each end of the drive shaft 13 and the driven shaft 5. Spline shaft portions 15 and 7 are formed so that the electric linkage 0 can be detachably coupled.

The transmission link device includes a driving arm 17 having a spline groove formed therein so as to receive the spline shaft portion 15 of the driving shaft 13 and to be engaged with the rotational direction, and one end of the driving arm 17 at an end region of the driving arm 17. The driven link 25 is coupled to the relative movement, one end is coupled to the driven shaft 5 integrally rotatable and the other end is coupled to the other end of the driven link (25) is driven relative to the movable arm (27) Equipped.

On the other hand, the drive arm 17 has a spline portion 20 having a cylindrical shape in which a spline groove 19 is formed so as to receive the spline shaft portion 15 of the drive shaft 13 in the center region and to be engaged with each other. A pair of arm plate portions 21a and 21b spaced apart from each other by a predetermined distance along the thickness direction of the portion 20 and integrally coupled to the circumference of the spline portion 20 by welding or the like are constituted.

Each arm plate portion 21a, 21b has a reduced thickness compared to the thickness of the spline portion 20, and one side has an inner diameter corresponding to the outer diameter of the spline portion 20 to accommodate the spline portion 20. The spline receiving hole 22 is formed. On one side of the spline receiving hole 22, a pair of through holes 24 are formed so that each end of the electric link 25 and the trip spring 8 can be coupled relative to each other by bolts.

By the way, in the conventional electric link device for electric power equipment, the means for correcting the error or deviation of the position and angle between the components is not provided, the drive shaft 13, the drive arm 17, the electric link 25 ), The distance and the angle between the driven arm 27 and the driven shaft 5 must be kept constant at all times so that assembly is possible. For example, since the spline shaft portion 15 and the spline groove 19 are formed to have six spline key grooves along the circumferential direction, each spline key groove has a 60 ° interval along the circumferential direction. When the end of the driving arm 17 is not precisely positioned from the position and has an angle difference of about 2 to 3 degrees, the assembly between the components becomes difficult or impossible, and after assembly Even if there is a problem that is likely to be a smooth operation.

Accordingly, an object of the present invention is to provide an electric link device for a power device that can be combined with various angles to facilitate correction of the assembly position, and can prevent assembly failure due to accumulated tolerances and the like.

1 and 2 are respectively a perspective view showing the electric link device region of the conventional power equipment,

3 is an enlarged view of the spline shaft of FIG. 1;

4 is a front view of the arm of FIG. 1, FIG.

5 is a longitudinal sectional view of FIG. 4;

6 is a view showing a state of use of the electric link device for power equipment according to an embodiment of the present invention,

7 is an enlarged view of the electric linkage device region of FIG. 6;

8 is a perspective view of a drive shaft,

9 is an exploded perspective view of the arm assembly of FIG.

10 and 11 are front and partial longitudinal cross-sectional views of the coupler of FIG. 9, respectively.

** Description of symbols for the main parts of the drawing **

9: operating mechanism part 11: support frame

31: drive shaft 33: first spline shaft

35: driven shaft 37: second spline shaft portion

41: arm assembly 43: coupler

44a: coupling portion 44b: spline portion

45: coupling hole 47a: the first arm

47b: second arm 50: through hole

55: driven arm

The above object is, in accordance with the present invention, in the electric link device for a power device interposed between the driven shaft and the drive shaft disposed to be spaced apart by a predetermined distance in parallel with the driven shaft to transmit the rotational force of the drive shaft to the driven shaft, A first spline shaft portion formed on one side of the driven shaft and the driving shaft over a predetermined length section along an axial direction; A coupler having a spline boss portion interlocked with the first spline shaft portion, the first arm and a second arm disposed opposite to each other with the coupler interposed therebetween along the thickness direction of the coupler and integrally rotatably coupled to the coupler; At least one arm assembly having a; An electric link device for a power device, characterized in that one end is connected to the first arm and the second arm so as to be relatively movable, and the other end is connected to the other of the drive shaft and the driven shaft. Is achieved.

Here, the coupler has an extension portion that is reduced in the thickness direction of the spline boss portion and extends in the radial direction and is spaced apart from each other to have an equiangular interval along the circumferential direction of the extension portion and penetrate in the thickness direction. A plurality of arranged through holes are formed, and the first and second arms are penetrated in the thickness direction around the boss accommodation hole and the boss accommodation hole to accommodate the spline boss, and the angle of the penetration work. It is preferable that a plurality of coupling holes spaced apart from each other are formed to have an angular interval that is an integer multiple of.

The first spline shaft portion is formed on the driving shaft, and a second spline shaft portion is formed at one end of the driven shaft over a predetermined length section along the axial direction of the driven shaft, and the second spline shaft portion is formed at one side. It is effective to further include a driven arm having a spline groove formed so as to be engaged with respect to the rotational direction and rotatably coupled integrally with the second spline shaft portion.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

Figure 6 is a view showing a state of use of the electric link device for power equipment according to an embodiment of the present invention, Figure 7 is an enlarged view of the region of the electric link device of Figure 6, Figure 8 is a perspective view of the drive shaft, 9 is an exploded perspective view of the arm assembly of FIG. 7, and FIGS. 10 and 11 are front and partial longitudinal cross-sectional views of the coupler of FIG. 9, respectively. The same reference numerals are given to the same and equivalent parts as the above-described conventional configurations, and detailed description thereof will be omitted. As shown in these figures, a drive shaft 31 is disposed at one lower side of the support frame 11 of the operating mechanism part 9 so as to output a predetermined driving force, and a drive shaft 31 above the drive shaft 31. The driven shaft 35 is arranged side by side. Between the drive shaft 31 and the driven shaft 35 is interposed an electric link device for a power device according to an embodiment of the present invention.

The electric link device for electric power equipment is engaged with the first spline shaft portion 33 and the first spline shaft portion 33 which are formed over a predetermined length section along the axial direction in the protruding end region of the drive shaft 31. An arm assembly 41 which is rotated by the arm, a driven arm 55 which is rotatably coupled to the driven shaft 35, and one end thereof is connected to the arm assembly 41 so as to be relatively movable, and the other end is driven arm 55. It is configured to include an electric link (25) connected to the relative movement.

The arm assembly 41 is spaced apart by a predetermined distance along the thickness direction of the coupler 43 and the coupler 43 in which the spline portion 44b is formed to be engaged with the first spline shaft portion 33, and with respect to the coupler 43. A plurality of fixing bolts 51 for integrally coupling the first arm 47a and the second arm 47b and the coupler 43, the first arm 47a and the second arm 47b are detachably coupled. And a nut 53.

Around the spline portion 44b is formed a coupling portion 44a which is reduced in the thickness direction and extends in the radial direction, and the first and second arms 47a and 47b are formed at the coupling portion 44a. A plurality of coupling holes 45 are formed to penetrate integrally by the fixing bolt 51 and the nut 53. Here, the spline portion 44b is alternately formed with 35 teeth and spline key grooves to allow fine angle adjustment, and the coupling hole 45 is formed of nine pieces to allow various angle combinations with the spline portion 44b. They are spaced apart along the circumferential direction so as to have an equiangular interval therebetween.

The first arm 47a and the second arm 47b have a reduced thickness compared to the coupler 43, and the plate surface has a spline receiving hole 48 to accommodate the spline portion 44b of the coupler 43. Each is formed through. In the opposite end region of the spline receiving hole 48 along the longitudinal direction of the first arm 47a and the second arm 47b, the trip spring 8 of the electric link 25 and the operating mechanism 9 is respectively opposed. The electric link coupling hole 52a and the trip spring coupling hole 52b are respectively formed to be movably coupled. A plurality of through holes 50 are formed around the spline receiving hole 48 so as to be able to communicate with the coupling hole 45 of the coupling part 44a.

Here, the through holes 50 are formed to have an equiangular interval to each other along the circumferential direction of the spline receiving hole 48, the number of the through holes 50 is the angle between each of the through holes (50) coupling holes ( 45) to be an integer multiple of the angle between. In this embodiment, as shown, the angle between the through holes 50 is 120 degrees, the angle between the coupling holes 45 is formed to 40 degrees.

Meanwhile, a second spline shaft portion 37 is formed on the driven shaft 35 to correspond to the first spline shaft portion 33 of the driving shaft 31, and a second spline shaft portion 37 is formed on one side of the second spline shaft portion 37. 37 is coupled to the driven arm 55 is formed with a spline groove to be engaged with each other and integrally rotated.

The driven arm 55 is spaced apart from each other at predetermined intervals along the thickness direction of the cylindrical driven spline portion 56 with a spline groove formed in the central region, and the circumference of the driven spline portion 56. The arm plate 57 is integrally coupled by welding or the like. The second spline shaft portion 37 and the driven spline portion 56 are each formed to have six spline key grooves along the circumferential direction.

By such a configuration, the driven arm 55 is first coupled to the second spline shaft portion 37 of the driven shaft 35, and one end of the electric link 25 is allowed to be relative to the free end of the driven arm 55. To be combined. Next, the first arm 47a and the second arm 47b are inserted around the spline portion 44b, and the electric link 25 and the trip spring are connected to the first arm 47a and the second arm 47b. 8).

The spline portion 44b is coupled to the first spline shaft portion 33 in a state where the coupling hole 45 and the through hole 50 of the first arm 47a and the second arm 47b coincide with each other. When the fixing bolt 51 is inserted into the coupling hole 45 and the through hole 50 communicated thereto, and the nut 53 is fastened to the fixing bolt 51, the coupling is completed.

Here, the angle which can be adjusted by the relative engagement position of the engaging hole 45 of the spline part 44b, the 1st arm 47a, and the 2nd arm 47b is again set to 9 angles (360 ° / 35). According to the relative positions of the first arm 47a and the second arm 47b coupled by the two engagement holes 45, the minimum angle that can be actually adjusted is 1.14 degrees. Accordingly, even if accumulation of tolerances or minor deformations, etc., generated during assembly of other elements such as the driving shaft 31, the driven shaft 35, the driven arm 55, the electric link 25 and the trip spring 8 occur, By appropriately adjusting the relative engagement positions of the coupler 43, the first arm 47a, and the second arm 47b, assembly can be facilitated and driving failure due to assembly failure can be prevented even after assembly.

In the above-described and illustrated embodiments, the first spline shaft portion formed in the drive shaft, the coupler and the coupler coupled to the first spline shaft portion is provided with a first arm and a second arm that can be combined variously and detachably For example, although the same spline shaft portion is formed on the driven shaft, the coupler and the arm assembly having the first arm and the second arm may be configured to be coupled to each other. In addition, the arm assembly including the first arm and the second arm may be configured to be coupled.

In addition, in the above-described and illustrated embodiments, the first spline shaft portion has 35 spline key grooves formed therein, and the coupler has nine coupling holes formed therein, where the minimum adjustment angle is approximately 1.14 °. In addition, the minimum adjustment angle can be increased or decreased by changing the number of them.

As described above, according to the present invention, various angle combinations are possible and detachably coupled to a coupler and a coupler on which a first spline shaft portion formed on one of a driving shaft and a driven shaft, and a spline portion engaged with the first spline shaft portion are formed. An arm assembly having a first arm and a second arm, and an arm shaft having one end connected to the arm assembly and the other end connected to the driven shaft to interact with each other, thereby generating an assembly of each component through various angle combinations. Unlike the prior art in which assembly defects and malfunctions occurred due to accumulation of tolerances, fine deformations, and the like, the electric link apparatus for power equipment, which can facilitate assembly and facilitate driving after assembly, is provided.

Claims (3)

An electric link device for a power device which is interposed between a driven shaft and a drive shaft disposed to be spaced apart from the driven shaft by a predetermined distance, and transmits a rotational force of the drive shaft to the driven shaft, wherein any one of the driven shaft and the drive shaft is provided. A first spline shaft formed on one side over a predetermined length section along the axial direction; A coupler having a spline portion engaged with the first spline shaft portion, and a first arm and a second arm which are disposed to face each other with the coupler interposed therebetween in the thickness direction of the coupler and are rotatably coupled to the coupler integrally; At least one arm assembly; An electric link device for a power device, characterized in that one end is connected to the first arm and the second arm in a relative motion, and the other end is connected to the other of the drive shaft and the driven shaft. The method of claim 1, The coupler may have a plurality of extension parts which are reduced in the thickness direction of the spline part and extend in the radial direction, and the plurality of the plurality of parts may be spaced apart so as to penetrate in the thickness direction and have an equiangular interval therebetween in the circumferential direction of the spline part. Through-holes are formed, And a plurality of coupling holes formed in the first arm and the second arm, the plurality of coupling holes penetrating along the thickness direction of the spline and spaced apart from each other to have an angular interval that is an integer multiple of the angle of the through-hole. Electric linkage for The method according to claim 1 or 2, The first spline shaft portion is formed in the drive shaft, At one end of the driven shaft is formed a second spline shaft portion over a predetermined length section along the axial direction of the driven shaft, the spline groove formed to receive the second spline shaft portion on one side to be engaged with the rotation direction And an driven arm coupled to the second spline shaft portion so as to be integrally rotatable.