KR100420077B1 - A loading apparatus of circuit breaker - Google Patents

Abstract

The present invention provides a first support, and lifting means fixed to the first support to ensure that the heavy breaker pulled out from the breaker mounting rack to support the maintenance and maintenance of the breaker in a stable support state without lowering the floor; A second support mounted on an upper portion of the first support and lifted up and down by an elevating means; a horizontal support in the elevating direction of the second support; The breaker stacking device is configured to include a stacking table mounted rotatably by a rotation connecting means and mounted with a breaker drawn from the breaker installation rack.

Description

A loading apparatus of circuit breaker

The present invention relates to a breaker stacking device, and more particularly, to a breaker stacking device for elevating the breaker for inspection and maintenance in a state in which a heavy breaker is stably supported.

In general, a circuit breaker is designed to open and close a circuit manually in a normal circuit state and to shut down the circuit in an abnormal state such as a short circuit failure. It is divided into types such as vacuum and high pressure, low pressure and high speed.

In addition, the breaker is divided into household and industrial according to the purpose of use, and in the case of home, it is a small circuit breaker of small capacity to cut off the power applied by detecting this when abnormal operation of various home appliances and lighting equipment in the house.

On the other hand, in the case of industrial, it detects the operation status of industrial equipment used in various industrial sites and automatically cuts off the power applied to the industrial equipment when abnormal operation occurs.

In particular, a breaker used in a nuclear power plant has a weight of about 100 kg per breaker and is usually installed in a three-stage breaker installation rack having a minimum height of 180 mm and a maximum height of 1650 mm.

Breakers used in such nuclear power plants should be pulled out of the breaker installation rack and put down on the floor in order to conduct proper inspection and maintenance as necessary. It is difficult to pull out, mount, or maintain and repair breakers using hoist chains, which are usually attached to motors such as hoists.

However, in the related art, when a heavy load breaker is transported to install, release, or maintain a heavy breaker using a hoist chain in the nuclear power plant as described above, the breaker is transported in a fixed state to the outer rope hoist chain, so that the breaker is stable. It is not fixed, and the breaker is damaged while hitting the operation switch, protective relay, etc. installed around the breaker during the transfer process.

In addition, in order to put the breaker on the floor, a number of workers are required to waste a lot of manpower, and when the breaker is placed on the floor, a serious problem of contamination of radioactive pollutants occurs due to the characteristics of the nuclear power plant.

Accordingly, an object of the present invention is to provide a circuit breaker stacking device for inspecting and maintaining a circuit breaker in a state in which a heavy breaker drawn out of a circuit breaker installation rack is stably supported without being placed on the floor.

Therefore, the breaker stacking device according to the present invention is a breaker stacking device supporting the breaker drawn out for inspection and maintenance in the breaker installation rack, to achieve the above object, the breaker drawn out of the breaker installation rack A loading section including a loading table, a fork on which the loading table is installed, and rotation connection means for allowing the loading table to be rotatably connected to the upper surface of the fork; The loading table having the breaker loaded with an underlay, a first support standing on the underlay, and a second support connected upwardly so as to overlap with the first support, the second support being movable by sliding inside the first support. A support for supporting the weight during the lifting of the wealth; A first elevating means fixed to one side of the second support and the other side of which is provided on the lower half of the support to allow the second support to move up and down, the support and the loading unit are fixed to the second support And an elevating unit having a second elevating means for elevating the mounting portion by chaining to an elevating unit. A caster is mounted on the lower portion of the first support and the underlay. The position is characterized in that the transfer handle is mounted. The first lifting means comprises: a hydraulic cylinder fixed to the underlay; And a piston rod fixed to the second support and vertically sliding inside the cylinder. The second lifting means is hinged to a fixing bracket fixed to an upper end of the first support. With a pulley; Including the wire wound on the pulley and fixed to each of the first support and the loading portion, when the first support is moved up and down by the first lifting means, the wire is wound on the pulley to move It is characterized in that the mounting portion is fixed to the wire can be moved up and down. The rotary connection means and the rotating shaft coupled to the lower surface of the loading table; A bearing box attached to the fork and shaft-coupled to the rotating shaft; It is characterized by consisting of a plurality of roller box is installed on the outside of the bearing box and the roller is in contact with the lower surface of the loading table axially coupled.

1 is a front view for explaining the breaker stacking device according to the present invention.

Figure 2 is a right side view for explaining the breaker stacking device according to the present invention.

Figure 3 is a plan view for explaining the breaker stacking device according to the present invention.

Fig. 4 is a cross-sectional view taken along the line IV-IV 'of Fig. 1.

10: 1st support 11: 2nd support

20: fork 30: loading table

40: pulley fixing bracket 41: pulley

42: wire 45: hydraulic cylinder

50: rotating shaft 52: bearing box

54: roller box

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the circuit breaker stacking apparatus according to the present invention.

1, 2 and 3 are front and right side views and a plan view of the circuit breaker stacking apparatus according to the present invention, and FIG. 4 is a sectional view taken along the line IV-IV 'of FIG.

As shown, the breaker stacking device of the present invention is for supporting a breaker drawn out for inspection and maintenance in the breaker installation rack, the first support 10, the first lifting means is installed, and the first support A second support 11 slidably installed at an upper portion of the second support means and provided with a second lift means interlocked with the lift of the first lift means, and horizontally with respect to the lift direction of the second support; It includes a fork 20 installed by the second lifting means, and the loading table 30 is rotatably installed on the upper portion of the fork by a rotation connecting means and the breaker drawn from the breaker mounting rack is mounted.

In more detail, a plurality of casters 12 are mounted on the lower part of the first support 10 and the underlay supporting the first support 10 to move the breaker stacking device.

The second support 11 is slidably installed in and out of the first support, and a handle 13 is installed at a predetermined position on the side of the second support for transporting the breaker stacking device. In the present embodiment, the handle 13 is not fixedly installed at a specific position of the second support, but is mounted to allow the sliding movement on the second support 11.

The first elevating means and the second elevating means are for raising and lowering the loading portion including the fork 20 and the loading table 30 so that the breaker is placed on the upper surface of the loading table 30.

The first lifting means comprises a hydraulic cylinder fixed to the underlay, and a piston rod 46 is installed to enable the sliding movement inside the hydraulic cylinder. In addition, the piston rod 46 is installed to penetrate the fork fixing bracket 21 in which the fork 20 is fixed and serves to prevent the loading part from moving out of the moving path when the loading part is moved up and down. 2 The lifting means is fixed to the upper end of the first support (10) and the pulley fixing bracket 40 to which the piston rod 46 of the hydraulic cylinder which is the first lifting means is coupled to the bottom and the pulley hinged to the pulley fixing bracket And a wire 42 wound on the pulley and fixed to the first and second wire fixing brackets 43 and 44 respectively provided on the first support 10 and the fork 20.

The fork 20 is coupled to the piston rod 46 of the hydraulic cylinder by the fork fixing bracket 21, so as not to interlock with the lifting of the piston rod.

The loading table 30 is to be mounted on the upper surface of the breaker drawn from the breaker mounting rack, it is installed on the fork 20 so as to be rotatable from the top of the port by the rotation connection means.

Here, the rotation connecting means is a bearing box that is interposed between the rotary shaft 50 installed on the lower portion of the loading table 30, the support plate 51 and the loading table 30 provided on the upper portion of the fork 20 condensed rotation shaft ( 52 and a plurality of roller boxes 54 provided on the support plate 51 to the outside of the bearing box and in contact with the lower surface of the loading table 30.

Here, the bearing box 52 is provided with a radial bearing 56 on the outer periphery of the condensed rotary shaft.

The roller box 54 is provided with a roller bearing 56 in contact with the lower surface of the loading table 30.

The loading process of the breaker through the breaker stacking device according to the present invention having the above-described configuration will be described.

First, if you want to check and maintain the breaker of a specific rack among the breakers loaded in a plurality of breaker installation rack, pull the roller rails installed on both sides of the bottom of the breaker to pull out from the rack.

In the breaker stacking device according to the present invention, since the caster 12 is installed at the bottom of the support, the breaker stacking device can be transferred to the breaker stacking position.

In this state, the hydraulic cylinder 45 serving as the first lifting means is operated so that the loading table 30 is located on the lower surface of the breaker drawn out.

Here, the process of placing the loading table on the lower surface of the breaker will be described in detail to operate the hydraulic cylinder 45, which is the first lifting means, in one step to raise the piston rod 46.

In conjunction with the piston rod 46 that is lifted in two stages, the second support 11 slides out of the first support 10 and rises upward. As the second support 10 rises, the pulley fixing bracket 40 which is the second lifting means rises.

Then, as the unfixed fixing bracket 40 rises, the pulley 41 and the wire 42 wound thereon are automatically lifted by two lifting means hinged to the unfixed fixing bracket. That is, as the pulley 41 moves upwards, the wire wound thereon moves on the pulley, and the wire pulls up the load connected thereto to raise the fork 20.

At this time, the fork 20 is raised because the first wire fixing bracket 43 is fixed to the first support 10 and the second wire fixing bracket 44 is fixed to the fork 20. This is because the pulley 41 rotates in conjunction with the rise of 11 to pull the wire 42.

Therefore, the fork 20 is raised and the breaker is mounted on the upper surface of the loading table 30.

When the breaker is placed on the upper surface of the stacking table 30 through the first, second and third steps, the first, second and third steps are reversed to lower the breaker to transfer to a position suitable for inspection and maintenance.

In addition, the breaker stacking device of the present invention can rotate the breaker in the 360 ° direction when the breaker is transported to a suitable position for inspection and maintenance.

That is, the rotating shaft 50 of the loading table 30 is condensed in the bearing box 52, the radial bearing 53 is installed inside the bearing box, and the table itself can be rotated, and a plurality of roller boxes ( This is because the roller bearing 55 condensed to 54 bears the load of the breaker and the rotation is smoothly performed.

As described above, the breaker stacking device according to the present invention can be placed by a lifting means to move the heavy breaker on the loading table by the lifting means to check and maintain the breaker with a small number of people You can do it.

In addition, the heavy weight breaker can be inspected and maintained while rotating in a state where it is placed on a loading table, thereby preventing contamination by radioactive contaminants and improving work efficiency.

Claims (6)

A breaker loading device that supports a breaker drawn out for inspection and maintenance in a breaker installation rack. A loading table on which the breaker drawn out from the breaker mounting rack is loaded, a fork on which the loading table is installed, and rotary connection means for allowing the loading table to be rotatably connected to the upper surface of the fork. A loading section; The loading table having the breaker loaded with an underlay, a first support standing on the underlay, and a second support connected upwardly so as to overlap with the first support, the second support being movable by sliding inside the first support. A support for supporting the weight during the lifting of the wealth; A first elevating means fixed to one side of the second support and the other side of which is provided on the lower half of the support to allow the second support to move up and down, the support and the loading unit are fixed to the second support And a lifter having a second lift means for chaining up and down to lift the load. The breaker stacking device according to claim 1, wherein a caster is mounted at a lower end of the support part. The method according to claim 1, Breaker stacking device, characterized in that the transfer handle is mounted on the predetermined position side of the second support. The method according to claim 1, wherein the first lifting means, A hydraulic cylinder fixed to the underlay; The breaker stacking device, characterized in that it comprises a piston rod fixed to the second support and a vertical sliding movement in the interior of the cylinder. The method according to claim 1 or 4, wherein the second lifting means, A pulley installed by a hinge on an upper end of the second support; Including a wire wound on the pulley and fixed to each of the first support and the mounting portion, When the second support is moved up and down by the first lifting means, the circuit breaker stacking device is characterized in that the wire is fixed to the mounting portion fixed to the wire as the wire is wound around the pulley to move. The method according to claim 1, The rotation connecting means and the rotating shaft coupled to the lower surface of the loading table; A bearing box attached to the fork and shaft-coupled to the rotating shaft; Breaker stacking device characterized in that consisting of a plurality of roller box is installed on the outside of the bearing box and the roller is in contact with the lower surface of the loading table axially coupled.