JP2020184831A - Carrying-in device for switch gear unit - Google Patents

Abstract

To provide a carrying-in device for a switch gear unit that can easily store the unit in a frame and can move it to a prescribed position relative to the frame with high accuracy.SOLUTION: A support leg 3 forming double legs so as to project frontward from a lower end of an upright framework 1 is provided. In an upper part of the support leg 3, a loading platform 2 which can be vertically moved along the framework is provided. At a prescribed position on an upper surface of the loading platform 2, a unit 50 is mounted. A corner that is in contact with the lower part of the framework of the support leg 3 is provided with a parallel surface 3B forming a parallel part 3D opposite each other. A reverse taper surface 3A formed over a tip end 3C of the support leg 3 so as to be connected to the parallel surface 3B is provided. When the unit 50 is conveyed to a frame 200, a frame side surface 200A of the frame 200 makes forward movement in contact with the reverse taper surface, and the unit 50 is stored at the prescribed position of the frame 200 at a location across a frame side surface 200A with the parallel part 3D of the support leg 3.SELECTED DRAWING: Figure 1

Description

The present application relates to a carry-in device for a switch gear unit.

Inside the switch gear, one block having a function necessary for an electric circuit is cut into modules, and the combination of the modules is aggregated to fulfill the function as a switch gear. The module is unitized as an independent device and mounted in the main circuit chamber of the switch gear. The mass of this unit is about 50 kg to 200 kg, and when the unit is manually carried in and incorporated into the frame of the switch gear, a carry-in device having a lifter (elevation) function is used.

Conventionally, in a switchboard device provided with a switchboard in which a plurality of drawer-type unit carriages are housed and a lifter device having a carrier, the lifter is installed at a predetermined position in the frame after the unit is mounted on the loading platform of the loading device. The first positioning means provided on the loading platform of the device, the second positioning means provided on the switchboard and engaging with the first positioning means, the first guide means provided at the tip of the loading platform of the lifter device, and the switchboard. The unit chamber is provided with a second guide means for guiding the first guide means, and the first guide means is guided and pushed into the second guide means, whereby the first positioning means and the second guide means. A technique in which the positioning means is arranged coaxially is disclosed (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2012-21274

However, in the technique shown in Patent Document 1, when the unit mass on the loading platform of the lifter device has a mass of about 50 kg to 200 kg, the loading platform itself is tilted due to the mass, and in that state, the lifting device is placed in the frame. It is difficult to push it into, and there is a problem that the loading platform itself is deformed if it is pushed in forcibly. In addition, the taper angle of the second guide means provided in the unit is large, so the load force for pushing the lifter device becomes large, which may cause a situation where it cannot be pushed by manual work, or the loading platform may be deformed. There is a problem.

The present application discloses a technique for solving the above-mentioned problems, and carries in a switch gear unit that can easily store the unit in a frame and can move the unit to a predetermined position accurately with respect to the frame. The purpose is to provide the device.

The switch gear unit carry-in device disclosed in the present application is
A device for carrying the unit into the frame of the switch gear, which is provided with support legs that project forward from the lower end of the upright frame to form double legs, and is provided on the upper part of the support legs. Is provided with a loading platform that can move up and down along the framework, the unit is mounted at a predetermined position on the upper surface of the loading platform, and the support legs face each other at the corners of the support legs in contact with the lower portion of the framework. A parallel surface is provided to form a parallel portion, and an inverted tapered surface connected to the parallel surface and formed over the tip of the support leg is provided.
When the unit is carried into the frame, the frame side surface of the frame comes into contact with the reverse tapered surface to move forward, and the unit moves forward with the parallel portion of the support leg sandwiching the frame side surface. It is stored in a predetermined position.

Since the switch gear unit carry-in device disclosed in the present application adopts the above-described configuration, even if the unit has a large mass, it can be easily moved to a predetermined position in the switch gear frame by human power. Moreover, it has the effect of being able to be stored accurately.

It is a perspective view which shows the carry-in device by Embodiment 1. FIG. It is a perspective view which shows the state which stores the unit in the frame according to Embodiment 1. FIG. It is a perspective view which shows the state which the carry-in device is inserted into the frame by Embodiment 1. FIG. It is a perspective view which shows the state which stores the unit in the frame by Embodiment 2. FIG. FIG. 5 is a perspective view showing a state in which the unit is carried into a predetermined position of the frame according to the second embodiment. It is sectional drawing which shows the relationship between the guide leg and the support leg according to Embodiment 2. FIG. It is a perspective view which shows the guide leg of another Example according to Embodiment 2. FIG.

Embodiment 1.
The first embodiment will be described with reference to the drawings. FIG. 1 is a perspective view showing a carry-in device 100 of a switch gear unit according to the first embodiment. FIG. 2 is a perspective view showing a state in which a unit 50 indicating a function as a switch gear mounted on a loading platform 2 of a loading device 100 is stored in a frame 200 which is a component of a switch gear 300. FIG. 3 shows a state in which the carry-in device 100 is pushed into the frame 200 from the state shown in FIG. 2, and the unit 50 stored in the frame 200 is not shown.

The carry-in device 100 shown in FIG. 1 has a total height TH of 2 m to 3 m, a total length TL of 1 m to 1.5 m, a total width TW of 1 m to 1.5 m, a length BL of the loading platform 2 of 0.8 m to 1.3 m, and a loading platform. The width BW of 2 is a physique of 0.9 m to 1.3 m. Further, the relationship between the frame inner width B of the frame side surface 200A shown in FIG. 2 and the width BW of the loading platform 2 is B> BW, and the parallel portion spacing W2> B and the tip portion spacing W1> of the support legs 3 described later. It is W2. The carry-in device 100 has a rib 1A as a main component for increasing rigidity, and is provided from an upright frame 1, a loading platform 2 provided on the frame 1 and movable up and down by operating an elevating handle 6, and a lower end of the frame 1. A support leg 3 that is provided so as to form a double leg having a substantially U-shaped plane shape, and a rear wheel 5 provided at the lower part of the frame 1 and a front wheel 4 provided at the tip portion 3C of the support leg 3 are provided. I have. The rear wheel 5 swings the carry-in device 100 in a free direction as the carry-in device 100 moves forward and backward. A unit 50 of about 50 kg to 200 kg is mounted on the loading platform 2, and the unit 50 is moved up and down by operating the elevating handle 6 so that the unit 50 can be stored in a predetermined vertical position of the frame 200.

The upper surface 2A has positioning lines 2C in the width direction and the longitudinal direction so that the unit 50 is mounted in a predetermined position on the upper surface 2A of the loading platform 2, and the adjustment unit 2B so that the fine movement position in the width direction of the unit 50 can be adjusted. Is provided. The positioning line 2C may be a narrow groove or a marking line provided on the upper surface 2A, and the adjusting portion 2B may be a push bolt or a small jack for sliding the unit 50 on a protrusion provided in a wall shape. May be good.

Parallel surfaces 3B are provided at the corners of the support legs 3 forming the twin legs in contact with the lower part of the frame so as to face each other and form the parallel portions 3D. Further, a reverse taper surface 3A is provided which is connected to the parallel surface 3B and forms a gentle reverse taper portion 3F over the tip portion 3C of the support leg 3. The reverse tapered surface 3A has a tapered surface length L1 of 0.5 m to 0.9 m, and the parallel surface 3B following the reverse tapered surface 3A has a length L2 of, for example, 0.05 m to 0.1 m. The tip spacing W1 between the inverted tapered surfaces 3A of the tip 3C and the frame inner width B have a relationship of W1> B. Further, the parallel portion spacing W2 between the parallel surfaces 3B and the frame inner width B of the frame side surface 200A have a relationship of W2> B. Here, when W1-B = 0.06 m, W2-B = 0.02 m, and the tapered surface length L1 is 0.5 m, the inclination angle is 2 cm over a length of 50 cm, which is gentle. It becomes the reverse taper portion 3F.

Therefore, when the carry-in device 100 is manually advanced to store the unit 50 in the frame 200, the carry-in device 100 advances without generating an excessive load while being guided by the reverse tapered surface 3A, and the parallel portion 3D By positioning the frame 200 from the relationship of W2> B, the unit 50 on the loading platform 2 is accurately stored at a predetermined position of the frame 200. Further, as shown in FIG. 3, in a state where the loading device 100 is pushed into the frame 200, the position of the unit 50 in the lateral direction with respect to the frame 200 is set by a bolt, a small jack, or the like (not shown) of the adjusting unit 2B of the loading platform 2. It is also possible to make fine adjustments.

The operation of storing the unit 50 in the frame 200 using the carry-in device 100 will be described below. ST is an abbreviation for step.
ST1. The unit 50 is mounted at a predetermined position along the positioning line 2C on the upper surface 2A of the loading platform 2 of the loading device 100.
ST2. The carry-in device 100 is manually advanced toward the frame 200.
ST3. The lifting handle 6 is operated to raise and lower the loading platform 2 so that the unit 50 is positioned in the predetermined height direction of the frame 200.
ST4. The position of the carry-in device 100 with respect to the frame 200 is adjusted so that the tip 3C of the support leg 3 of the carry-in device 100 sandwiches the frame side surface 200A. In this case, since the rear wheel 5 swings, the position adjustment is easy.
ST5. Guided by the reverse taper portion 3F, the carry-in device 100 advances toward the frame 200. At this time, since the taper angle is gentle, the load force required for pushing may be small.
ST6. When the parallel portion 3D of the support leg 3 stops with the frame side surface 200A sandwiched between them, the unit 50 can be stored at a predetermined position of the frame 200. The lateral position of the unit 50 with respect to the frame 200 is finely adjusted by operating bolts, small jacks, etc., if necessary.

As described above, in the first embodiment, the reverse tapered surface 3A of the support leg 3 functions as a guide surface with respect to the frame 200, and the rear wheel 5 swings to cause the unit 50 to have a mass of 200 kg class. The effect is that the generation of extra frictional resistance is small, the unit 50 mounted on the carry-in device 100 is stored in a predetermined position of the frame 200, and the carry-in device 100 or each part of the frame 200 is not damaged. is there. Further, the unit 50 can be slightly moved in the lateral direction of the frame 200 by a bolt or a small jack of the adjusting portion 2B provided on the loading platform 2, and the effect of storing the unit 50 in the frame 200 becomes easier. is there.

Embodiment 2.
Next, the second embodiment will be described. In the second embodiment, in addition to the carry-in device 100 of the first embodiment described above, a mounting base 10 for a dedicated tool is provided to store the unit 50 at a predetermined position in the frame 200. FIG. 4 is a perspective view showing the start of storing the unit 50 mounted on the loading platform 2 of the loading device 100 on the frame 200 installed at a predetermined position corresponding to the pair of guide legs 11 described later on the mounting platform 10. It is a figure. As shown in FIG. 4, the recesses 10A provided on the lower surface of the mounting base 10 into which the support legs 3 of the carry-in device 100 can be inserted are provided with guide legs 11 that face each other and form a pair. FIG. 5 is a perspective view showing a state in which the unit 50 has reached a predetermined position in the frame 200. FIG. 6 is a cross-sectional perspective view showing the relationship between the guide legs 11 of the mounting base 10 and the support legs 3 of the carry-in device 100 as viewed from the arrow AA of FIG. In FIG. 6, the outer span 11G of the guide leg 11 has a relationship of the parallel portion spacing W2 of the support leg 3 shown in FIG. 1> the outer span 11G.

The operation of the carry-in device 100 from the state of FIG. 4 to the state of FIG. 5 will be described. The reverse taper portion 3F of the support leg 3 of the carry-in device 100 is guided by the outer span 11G of the guide leg 11 of the mounting base 10 and moves forward, and the parallel portion 3D of the support leg 3 sandwiches the outer span 11G. Moreover, the unit 50 reaches a predetermined position of the frame 200, and the unit 50 is stored in the frame 200 in this state. The fine adjustment of the lateral position of the unit 50 is performed by the adjustment unit 2B as in the first embodiment.

As shown in FIG. 7, the guide leg tapered surface 11B may be provided on the end portion 11C of the guide leg 11. When the mounting base 10 having such a guide leg tapered surface 11B is used, the centering of the carry-in device 100 during forward movement becomes easier, and the load required for movement can be reduced. As described above, even in the second embodiment, the same effect as that of the first embodiment described above is obtained.

Although the example in which the carrying-in device 100 is manually moved is shown in both the first and second embodiments, it may be performed by an automated device such as hydraulic or electric.

Although the present application describes various exemplary embodiments and examples, the various features, embodiments, and functions described in one or more embodiments are applications of a particular embodiment. It is not limited to, but can be applied to embodiments alone or in various combinations.
Therefore, innumerable variations not illustrated are envisioned within the scope of the techniques disclosed in the present application. For example, it is assumed that at least one component is modified, added or omitted, and further, at least one component is extracted and combined with the components of other embodiments.

1 frame, 2 loading platform, 2A top surface, 2B adjustment part, 3 support legs, 3A reverse taper surface,
3B parallel surface, 3C tip part, 3D parallel part, 3F reverse taper part, 10 mounting base,
10A recess, 11 guide legs, 11G outer span, B frame inner width, BW width,
W1 tip spacing, W2 parallel spacing, 50 units, 100 carry-in device,
200 frame, 300 switch gear, 200A frame side surface.

Claims (6)

A device for carrying the unit into the frame of the switch gear, which is provided with support legs that project forward from the lower end of the upright frame to form double legs, and is provided on the upper part of the support legs. Is provided with a loading platform that can move up and down along the framework, the unit is mounted at a predetermined position on the upper surface of the loading platform, and the support legs face each other at the corners of the support legs in contact with the lower portion of the framework. A parallel surface is provided to form a parallel portion, and an inverted tapered surface connected to the parallel surface and formed over the tip of the support leg is provided.
When the unit is carried into the frame, the frame side surface of the frame comes into contact with the reverse tapered surface to move forward, and the unit moves forward with the parallel portion of the support leg sandwiching the frame side surface. A device for carrying in a switch gear unit that is stored in a predetermined position. The frame is mounted on a mounting table of dedicated equipment, and when the unit is carried into the frame,
The support legs are inserted into the recesses provided on the lower surface of the mounting base, and the reverse tapered surfaces of the support legs come into contact with the guide legs provided in pairs with the recesses to move forward. The device for carrying in a switch gear unit according to claim 1, wherein the unit is stored in the frame at a position where the guide legs are sandwiched between the parallel portions of the support legs on the end surface of the mounting base. The device for carrying in a switch gear unit according to claim 1 or 2, wherein an adjusting portion is provided on the upper surface of the loading platform so that the unit can finely adjust the lateral position with respect to the frame. The device for carrying in a switch gear unit according to claim 2, wherein the pair of guide legs is provided with a guide leg tapered surface so that the reverse tapered surface of the support leg is in contact with the end surface portion of the mounting base. The switch gear unit loading device according to any one of claims 1 to 4, wherein the framework is provided with a manual handle that allows the loading platform to move up and down. The switch gear unit loading device according to any one of claims 1 to 5, wherein a positioning line for mounting the unit at the predetermined position is provided on the upper surface of the loading platform.

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