KR101693092B1 - Moving device of lift for withdrawable circuit breaker - Google Patents

Abstract

A moving device of a lift for a draw-out type breaker will be described.
According to one aspect of the present invention, there is provided a power supply device for a drawer type breaker, comprising: a base plate coupled to a lift for a drawer type circuit breaker to provide a bottom surface on which the drawer type circuit breaker is seated, A guide unit arranged to face each of the wheels of the circuit breaker and adapted to adjust the position of the guide rail in correspondence with the width of the two wheels; And a pushing unit for pushing the drawer-type breaker toward the rail in the switchboard.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lifting device for a draw-

The present invention relates to a moving device for a lift for a drawer-type circuit breaker, and more particularly, to a moving device for a drawer-type circuit breaker which can facilitate the operation of transporting a drawer- ≪ / RTI >

A switchboard is a device that keeps switches, instruments, relays, etc. in a steady state for operation and control of power plants and substations, and for operation of motors.

The draw-out type circuit breaker is housed in the switchboard and cuts off the flow of current when an accident occurs on the line passing through the rated load current, and at the same time, .

However, in the case of a draw-out type circuit breaker, it is often heavy that the worker can hardly carry it directly, and most draw-out type circuit breakers are carried to the place where the switchboard is located by being carried on the lift.

FIG. 1 is a view showing a state in which a draw-out type circuit breaker is transported to a switchboard on a lift according to a conventional method. Referring to FIG. 1 (a), the lift 1 for the drawer-type circuit breaker is provided with the traveling wheel 3 at the lower end, so that the drawer-type circuit breaker 30 having a heavy weight can be easily carried to the switchboard. The lift 1 is provided with a height adjustable moving device 10. Then, the draw-out type breaker 30 is transported toward the switchboard in accordance with the movement of the lift 1 in a state of being placed on the moving device 10. As the height of the moving device 10 on which the drawer type circuit breaker 30 is placed is adjusted, the height of the drawer type circuit breaker 30 is adjusted according to the height of the inner rail of the switchboard.

1B, the height of the wheels 31 of the draw-out type circuit breaker 30 is aligned with the height of the rails 51 in the switchboard 50 according to the height adjustment of the moving device 10 Can be confirmed. Thereafter, the draw-out type circuit breaker 30 is moved toward the rail 51 in the switchboard 50 by driving the wheels 31. 1B, the left side of the draw-out type circuit breaker 30 is generally referred to as a "front side", and the right side of the draw-out type circuit breaker 30 is referred to as a "rear side".

2 is a view schematically showing a conventional moving device. Particularly, FIG. 2 (a) shows a plan view of the moving device, and FIG. 2 (b) shows a side view of the moving device (that is, a view viewed in the direction B in FIG.

Referring to FIG. 2, the conventional moving device 10 includes a base plate 11 having a rectangular planar shape, an outer wall 13 formed along the upper edge of the base plate 11, 15).

A breakaway type circuit breaker 30 is seated in the upper center of the base plate 11 and an outer wall 13 is formed in such a manner that the breakable circuit breaker 30 placed on the base plate 11 is wound around the edge except for the front opening, Shape.

The supporting member 15 supports the connecting portion when the moving device 10 is connected to the power distributing board, thereby supporting the connecting portion in a structurally supporting manner.

On the other hand, each of the draw-out type circuit breakers 30 placed on the base plate 11 is provided with two wheels 31 on both sides (i.e., four in total), and by driving the wheels 31, As shown in FIG.

However, after the wheels 31 of the draw-out type circuit breaker 30 are adjusted in height according to the rail position in the switchboard according to the height adjustment of the moving device 10, the wheels 31 are transported to the switchboard by several workers.

However, the draw-out type circuit breaker 30 has a variety of sizes, and there is no separate guide device for guiding the movement path corresponding to the width W of the wheel 31, so that it is difficult to move the circuit breaker 30 toward the rail in the switchboard.

For example, a work type in which a plurality of workers are mobilized to push the draw-out type circuit breaker 30 in various directions to appropriately adjust the moving direction of the draw-out type circuit breaker 30 to push it toward the rail inside the switchboard has been used. And, since a relatively large force is required when the draw-out type circuit breaker enters from the moving device 10 onto the rail in the switchboard, there is a risk of increased worker fatigue and safety accidents.

A related prior art is Korean Patent Laid-Open Publication No. 10-2011-0024002, which discloses a breaker transport lift.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lifting device for a drawer-type circuit breaker which can be easily handled during the operation of conveying the drawer-type breaker placed in the lift into the inside of the switchboard and can ensure safety.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned here can be understood by those skilled in the art from the following description.

According to an embodiment of the present invention, a base plate coupled to a lift for a withdrawable breaker to provide a bottom surface on which the withdrawable breaker is seated, and to be connectable with a rail in the switchboard; And a guide rail disposed at an upper portion of the base plate so as to face each of both wheels of the draw-out type breaker, wherein a position of the guide rail is changed corresponding to a width between the two wheels, A guide unit for guiding the rail toward the rail; And a pressing unit arranged to face the front face of the draw-out-type breaker at an upper portion of the base plate and push the draw-out-type breaker so that the draw-out-type breaker enters the rail in the switchboard. Can be provided.

Here, the guide unit may include: a screw bar passing through an outer wall protruded from both side ends of the base plate and fixed to the guide rail; A nut block engaged with the screw bar through the outer wall to move the screw bar to be rotated; And a fixing block for fixing the screw bar and the guide rail.

And a linear guide spaced apart on both sides of the screw bar to guide movement of the guide rail.

In this case, the linear guide may include a guide shaft formed in the same direction as the screw bar, and connected to the guide rail through the outer wall. And a guide block coupled to the outer circumference of the guide shaft through the outer wall to guide the linear movement of the guide shaft.

The pressing unit includes a pushing screw bar protruding from the rear end of the base plate through an outer wall and projecting toward the front of the draw-out type circuit breaker; And a pressing nut block which is engaged with the pressing screw bar through the outer wall and moves the pressing screw bar rotated to the front side of the drawing type breaker.

And a clutch coupled to the pressing nut block for fixing and releasing the engagement state between the pressing screw bar and the pressing nut block according to the rotating direction.

At this time, the clutch includes a rotating plate which is rotatably formed to surround a part of the pressing screw bar; A pin bolt connecting the one end of the rotation plate and the pressing nut block and serving as a rotation center of the rotation plate; And a handle provided at the other end of the pivot plate.

The locking pin is inserted through the rotating plate and the pressing nut block at the same time, and locks the rotation of the rotating plate to fix the coupling state between the pressing screw bar and the pressing nut block.

According to the moving apparatus for a lift for a drawer-type circuit breaker of the present invention, when the drawer-type circuit breaker placed in the lift is transported to the inside of the switchboard, the operation convenience can be improved and the working time can be shortened.

In addition, it is possible to easily move the draw-out type breaker with a heavy weight to the rail inside the switchboard by simply rotating the handle, thereby reducing the labor of the operator and preventing the occurrence of a safety accident.

1 is a view showing a state in which a draw-out type circuit breaker is carried into a switchboard on a lift according to a conventional method;
2 is a view schematically showing a moving device of a lift for a conventional pull-out type circuit breaker.
3 is a plan view schematically illustrating a moving device of a lift for a drawer-type circuit breaker according to an embodiment of the present invention;
Fig. 4 is a view schematically showing a moving device of a lift for a withdrawable breaker as viewed in a direction B in Fig. 3; Fig.
Fig. 5 is a view schematically showing a moving device of a lift for a withdrawable-type circuit breaker as seen in a direction A in Fig.
6 is a view showing the operating state of the moving device when the wheel width W2 of the draw-out type breaker is widened.
Fig. 7 is a sectional view showing the section I-I of Fig. 3; Fig.
8 is a view showing a section II-II in Fig. 3; Fig.
Fig. 9 is a sectional view taken along the line III-III in Fig. 4; Fig.
10 is a view showing an operating state of the clutch as viewed in the direction of C in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a moving device of a lift for a drawer-type circuit breaker according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a plan view schematically showing a moving device of a lift for a drawer-type circuit breaker according to an embodiment of the present invention, FIG. 4 is a view as seen in a direction B in FIG. 3, and FIG. 5 is a view in a direction A in FIG. .

3 to 5, the moving apparatus 100 of the drawer type breaker lift includes a base plate 101, guide units 110 and 120, linear guides 130, 140, 150 and 160, 180).

The base plate 101 is coupled to a lift for a drawable breaker to provide a floor on which the drawable breaker 30 is seated. And is connectable to a rail (not shown) in the switchboard.

The illustrated base plate 101 has a rectangular planar shape, but need not be limited thereto, and can be modified depending on the shape and structure of the lift.

And an outer wall 103 protruding from the edge of the base plate 101 at a predetermined height. For example, the outer wall 103 may be formed in a U-shape on both sides of the left and right sides of the base plate 101 except the front region where the draw-out type circuit breaker 30 seated on the base plate 101 moves toward the switchboard.

A support member 105 is formed at a front end portion of the base plate 101 connected to the switchboard. The support member 105 protrudes into the switchboard when the base plate 101 is connected to the switchboard, do.

On the other hand, the draw-out type circuit breaker 30 mounted on the upper portion of the base plate 101 has two wheels 31 on both sides (i.e., four in total). By driving the wheels 31, In a movable form toward the rails in the frame.

The base plate 101 is provided on the lift for the draw-out type circuit breaker so that the height of the wheel 31 of the draw-out type circuit breaker 30 can be adjusted to match the height of the rail in the switchboard.

The guide units 110 and 120 have guide rails 113 and 123 disposed at the upper portion of the base plate 101 and facing the respective wheels 31 of the drawable type circuit breaker 30.

Particularly, the draw-out type circuit breaker 30 has a variety of sizes, and accordingly, the width W1 between the two wheels 31 may vary. In this situation, the guide units 110 and 120 move the guide rails 113 and 123 toward the both wheels 31 in a direction corresponding to the width W1 between the two wheels 31, Guides the movement route.

6 shows a case in which the width W2 between the side wheels 31 of the drawer type circuit breaker 30 is larger than the width W1 between the side wheels 31 in Fig. The guide rails 113 and 123 can be moved toward the both wheels 31 by using the guide rails 110 and 120.

The guide units 110 and 120 include screw bars 111 and 121, nut blocks 112 and 122, guide rails 113 and 123 and fixing blocks 115 and 125.

The screw bars 111 and 121 are installed to be able to advance and retract in a direction crossing the moving direction of each of the two wheels 31. For example, the screw bars 111 and 121 may be installed through the outer wall 103 protruded from both side ends of the base plate 101.

One end of the screw bars 111 and 121 is coupled to the guide rails 113 and 123 through the fixing blocks 115 and 125 and the other end of the screw bars 111 and 121 is coupled to the outside of the outer wall 103 And can be engaged with the handles 119 and 129.

The nut blocks 112 and 122 are engaged with the screw bars 111 and 121 to move the screw bars 111 and 121 rotated by the handles 119 and 129 toward the wheels 31 And is provided through the outer wall 103.

For example, the nut blocks 112 and 122 can move forward and backward through the screw bars 111 and 121, which are fixed and rotated through the outer surface of the outer wall 103.

When the operator rotates the handles 119 and 129 in the setting direction, the left and right guide rails 113 and 123 opposed to the respective wheels 31 of the drawer- 31). ≪ / RTI >

As a result, the position of the guide rails 113 and 123 can be actively changed even when the width W1 between the two wheels of the drawer-type circuit breaker 30 is changed.

The guide rails may further include linear guides 130, 140, 150, and 160 for guiding movement of the guide rails 113 and 123.

As a specific example, a pair of linear guides 130 and 140 are provided with a screw bar 111 on one side therebetween. And a pair of linear guides 150 and 160 may be provided with the screw bar 121 on the other side of the opposite side interposed therebetween.

These linear guides 130, 140, 150 and 160 are guided by guide shafts 131, 141, 151 and 161, guide blocks 131, 141, 151 and 161, 135, 145, 155, and 165).

For example, two guide shafts 131 and 141 are arranged on both sides of one side of the screw bar 111. These guide shafts 131 and 141 pass through the outer wall 103 and are connected to the guide rail 113. Two guide shafts 151 and 161 are disposed on both sides of the screw bar 121 on the other side and are connected to the opposite guide rail 123 in the same structure as the one side.

The guide blocks 135, 145, 155 and 165 are fixed to the portions through which the guide shafts 131, 141, 151 and 161 pass through the outer wall 103, 131, 141, 151, and 161 are moved.

Accordingly, the guide rails 113 and 123 can be moved more stably by the linear guides 130, 140, 150 and 160, and the position can be changed.

The pressure unit 180 is disposed at the top of the base plate 101 to face the front of the draw-out type circuit breaker 30 and pushes the draw-out type circuit breaker 30 toward the rail in the switchboard according to the rotation operation.

Here, the front surface of the draw-out type circuit breaker 30 refers to the left side of the draw-out type circuit breaker 30 (see Fig. 1 (b)), b) is referred to as the rear surface.

To this end, the pressure unit 180 includes a pressure screw bar 181, a pressure nut block 182, a clutch 183, a lock pin 184 and a pressure handle 189.

The pressing screw bar 181 is installed to penetrate the outer wall 103 protruding from the rear end of the base plate 101 so that the tip end thereof faces the front face of the draw- A pressing handle 189 is provided at the rear end of the pressing screw bar 181 to improve the convenience in rotating the pressing screw bar 181.

The pressing nut bar 182 is fixed through an outer wall 103 through which the pressing screw bar 181 penetrates and the pressing screw bar 181 which is rotated by engaging the pressing screw bar 181, To the front side of the breaker (30). This makes it possible to carry the draw-out type circuit breaker even to the rails in the switchboard with a small force.

Meanwhile, the pressing nut block 182 is provided with a clutch 183. The clutch 183 fixes the engagement state between the pressing screw bar 181 and the pressing nut block 182 or releases the engagement state according to the rotating direction of the handle.

For example, when the clutch 183 is operated to release the engagement between the pressing screw bar 181 and the pressing nut block 182, the pressing screw 181 is pushed to the front face of the draw- It is possible to arrange them in close proximity.

On the other hand, when the clutch 183 is operated to maintain the state of engagement between the pressing screw bar 181 and the pressing nut block 182, the pressing screw 181 always pushes the front face of the draw- I will go forward.

7 is a cross-sectional view of the guide unit 110 showing the section I-I in Fig.

Referring to FIG. 7, the guide unit 110 includes a screw bar 111, a nut block 112, a guide rail 113, and a fixing block 115.

The screw bar 111 passes through the outer wall 103 of the base plate and is provided at one end 111a with a handle 119 and the other end 111b with a guide rail 113 through a fixing block 115. [ Respectively. A nut block 112 is fixed to a portion where the screw bar 111 passes through the outer wall 103 with a bolt B.

For example, the handle 119 may include a handle bar 119a connected to one end 111a of the screw bar 111 and a knob 119b fixed to both ends of the handle bar 119a, . ≪ / RTI >

The other end portion 111b of the screw bar 111 is connected to the guide rail 113 by being fixed to the fixing block 115 fixed by the guide rail 113 and the bolt B. At this time, the other end 111b of the screw bar 111 may have a round (R) shape, but the present invention is not limited thereto.

8 is a cross-sectional view taken along the line II-II in FIG. 3, illustrating the cross-sectional structure of the linear guide 140. FIG.

Referring to FIG. 8, the linear guide 140 includes a guide shaft 141, a guide block 145 that is wrapped around the guide shaft 141 and guides the linear movement of the guide shaft 141.

The guide shaft 141 is connected to the guide rail 113 through the outer wall 103 in parallel with the screw bar 111 of FIG. The guide block 145 is fixed to the outer wall 103 with a bolt B and has a shape protruding outside of the outer wall 103 by a predetermined length to enclose the guide shaft 141 through a hollow.

According to this structure, the guide block 145 guides the linear movement of the guide shaft 141 connected to the guide rail 113 when the guide rail 113 moves.

Fig. 9 is a view showing a section III-III in Fig. 4, which is a view briefly showing a sectional structure of the pressurizing unit 180. Fig. 10 is a view showing the operating state of the clutch viewed in the direction C in Fig. to be.

9 and 10, the pressure unit 180 includes a pressure screw bar 181, a pressure nut block 182, a clutch 183, a lock pin 184, and a pressure handle 189.

The tip end of the pressing screw bar 181 is installed to face the front face of the draw-out type circuit breaker 30. A pressing handle 189 is provided at the rear end of the pressing screw bar 181. For example, the pressing handle 189 may include a handle bar 189a connected to one end of the pressing screw bar 181 and a knob 189b fixed to both ends of the handle bar 189a.

The pressing nut block 182 is fixed to the pressing screw bar 181 through an outer wall 103 through which the pressing screw bar 181 passes.

The pressing nut block 182 is provided with a clutch 183.

The clutch 183 serves to maintain or release the meshing state between the pressing screw bar 181 and the pressing nut block 182 by simply rotating the knob 183a.

The clutch 183 has a rotating plate 183d which is rotatably formed to surround a part of the pressing screw bar 181. [ A pin bolt 183c is fastened and fixed between one end of the pivot plate 183d and the pressing nut block 182. [

The pin bolt 183c serves as a rotation center of the rotation plate 183d.

For example, as shown in FIG. 10 (a), when the rotation plate 183d rotates clockwise about the pin bolt 183c, the clutch 183 remains locked.

Conversely, when the pivot plate 183d is rotated counterclockwise about the pin bolt 183c as shown in FIG. 10 (b), the lock of the clutch 183 is released. A rod-shaped handle 183a may be provided at the other end of the pivot plate 183d.

The locking pin 184 is inserted through the rotating plate 183d and the pressing nut block 182 at the same time and locks the rotation of the rotating plate 183d.

The lock pin 184 is rotated by the rotation plate 183d so as to lock the clutch 183 in the state of locking the clutch 183 as shown in Figure 10A and then lock the coupling state between the pressing screw bar 181 and the nut block 182 to be. For example, the locking pin 184 may be inserted and fixed to the pressing nut block 182 through the insertion hole 183b in the pivot plate 183d.

Hereinafter, an operation of moving a draw-out type breaker of a heavy load to a rail in a switchboard using a moving device of a lift for a draw-out type circuit breaker according to an embodiment of the present invention will be described.

The handles 119 and 129 of the guide units 110 and 120 provided on both sides in accordance with the width W1 between the two wheels 31 of the drawer breaker 30 seated on the base plate 101 as shown in Fig. ). The guide rails 113 and 123 connected to the screw bars 111 and 121 are adjusted to the widths of both the wheels 31 of the drawer type breaker 30.

On the other hand, when the clutch 183 is loosened, the pressing screw 181 is released from the state of engagement with the pressing nut block 182 and can be pushed in the front direction of the draw- have.

Then, when the draw-out type circuit breaker 30 is moved over the rails in the switchboard, a relatively large force is required, so that the clutch 183 is locked and the engagement state between the press screw 181 and the pressure nut block 182 is fixed. Thereafter, the pull-out type circuit breaker 30 can be easily transferred onto the rails in the switchboard by using the force of the pushing screw 181 moving forward in accordance with the rotation of the pressure handles 189.

Therefore, unlike the conventional one, it is possible to carry out the operation of transferring a heavy-weight draw-out type breaker to the switchboard only by a single worker, and it is possible to prevent the occurrence of various safety accidents.

As described above, according to the structure and the function of the present invention, there is an advantage that the work convenience can be improved and the working time can be shortened when the draw-out type circuit breaker placed in the lift is transported to the inside of the switchboard.

Furthermore, it is possible to easily move the draw-out type circuit breaker with a heavy weight over the rail inside the switchboard by simply rotating the handle, thereby reducing the labor of the operator.

Further, there is an advantage that various safety accidents that may occur when carrying a draw-out type breaker having a high load can be prevented.

Although the present invention has been described with respect to a moving device for a lift for a drawer-type circuit breaker, it is apparent that various modifications can be made without departing from the scope of the present invention.

It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are not to be construed in a limiting sense, and the scope of the present invention is indicated by the appended claims rather than by the foregoing description, All changes and modifications that come within the spirit and scope of the appended claims are intended to be embraced therein.

1: Lift 3: Driving wheels
10: Conventional moving device 11: Base plate
13: outer wall 15: support member
30: drawer type breaker 31: wheel
50: Switchboard 51: Rail in the switchboard
100: Moving device of lift for withdrawable breaker
101: base plate 103: outer wall
110, 120: guide unit 111, 121: screw bar
112, 122: nut block 113, 123: guide rail
115, 125: fixed block 119, 129: handle
130, 140, 150, 160: linear guides 131, 141, 151, 161: guide shaft
135, 145, 155, 165: guide block 180: pressure unit
181: pressure screw bar 182: pressure nut block
183: clutch 183a: handle
183b: Insertion hole 183c: Pin bolt
183d: rotation plate 184: locking pin
189: pressure handle

Claims (8)

A base plate coupled to the lift for the drawer-type circuit breaker to provide a floor on which the drawer-type circuit breaker is seated, the base plate being connectable with the rail in the switchboard;
A guide unit having guide rails disposed on opposite sides of each of the wheels of the drawer type breaker at an upper portion of the base plate, the guide unit adjusting the position of the guide rails corresponding to the widths of the two wheels;
And a pressing unit disposed facing the front surface of the draw-out circuit breaker at an upper portion of the base plate and pushing the draw-out circuit breaker toward the rail in the power distribution board,
The pressing unit includes a pushing screw bar protruding from a rear end of the base plate through an outer wall and projecting toward a front surface of the draw-out type circuit breaker; And
And a pressing nut block engaging with the pressing screw bar through the outer wall to move the rotating pushing bar into a front side of the drawer type breaker.
The method according to claim 1,
The guide unit includes:
A screw bar penetrating an outer wall protruding from both side ends of the base plate and fixed to the guide rail;
A nut block engaged with the screw bar through the outer wall to move the screw bar to be rotated; And
And a fixing block for fixing the screw bar and the guide rail.
3. The method of claim 2,
And a linear guide spaced apart on both sides of the screw bar so as to guide movement of the guide rails.
The method of claim 3,
The linear guide
A guide shaft formed in the same direction as the screw bar and connected to the guide rail through the outer wall; And
And a guide block coupled to the outer circumference of the guide shaft through the outer wall to guide the linear movement of the guide shaft.
delete The method according to claim 1,
And a clutch coupled to the pressing nut block for fixing and releasing the engagement state between the pressing screw bar and the pressing nut block according to the rotating direction.
The method according to claim 6,
The clutch
A rotating plate rotatably surrounding a part of the pressing screw bar;
A pin bolt connecting the one end of the rotation plate and the pressing nut block and serving as a rotation center of the rotation plate; And
And a handle provided at the other end of the pivoting plate.
8. The method of claim 7,
And a locking pin inserted through the rotating plate and the pressing nut block at the same time to fix the state of engagement between the pressing screw bar and the pressing nut block by restricting rotation of the rotating plate, Device.

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