JPWO2019193619A1 - Mobile equipment loading / unloading equipment and electrical equipment - Google Patents

Abstract

The mobile device loading / unloading device (50) movably supports the frame (6) on which the mobile device (7) is placed and the frame (6) at one end, and the worm wheel part (3c) at the other end. Operation of the worm (2b) that meshes with the link (3a and 5a) formed with the worm and the worm wheel portion (3c) of the link (3a and 5a) to rotate the worm wheel portion (3c), and the worm (2b) Rotating means for rotating the worm wheel portion (3c), which is connected to the shaft (2a).

Description

  The present application relates to a mobile device loading / unloading device and an electric device.

  Conventionally, for example, a lead screw mechanism that moves a nut straight along a lead screw by rotating the lead screw has been used for taking in and out a moving device (a circuit breaker, a switch, a disconnector, an instrument transformer, etc.) in a switchgear. Was used (for example, see Patent Documents 1 and 2).

  The conventional loading / unloading mechanism disclosed in, for example, Patent Document 1 described above includes a carriage on which a circuit breaker main body coupled or separated from a mount frame installed behind a cradle is movably mounted, and the carriage is moved back and forth. The pull-in and pull-out handle for causing the pull-in and pull-out handle, the braking means for limiting the moving distance of the carriage transported by the pull-in and pull-out handle, and the girder assembly for supporting the pull-in and pull-out handle. Further, the carriage is pulled in or pulled out along a box body having an open upper portion and a wall body having a predetermined height formed on the outer peripheral surface thereof, and guide rails installed inside both side walls of the cradle. Thus, it consists of two pairs of wheels installed on both sides of the box.

  Further, the pull-in / pull-out handle includes a lead screw inserted in the front-rear direction into a through hole formed in the front wall of the box, and the inside of the front wall of the box when screwed into the lead screw. , A "U" -shaped bracket that is fixed to the box to prevent the transfer nut from coming off, and a lead screw that is detachably installed at the front end so that the lead screw can be rotated forward and backward. It consists of an operating handle.

As described above, in the conventional loading and unloading mechanism, the mechanism for moving the nut straight along the lead screw by rotating the lead screw is used to perform the moving operation of the device. The reason why these mechanisms are often used is that the use of a lead screw and a nut makes it possible to relatively easily configure the deceleration function and the generation of the straight thrust when converting the rotational operation force into the straight movement. .
In the process of moving the moving device in and out of the switchgear, the thrust required to insert the contact plug of the electric circuit contact near the final insertion position becomes the maximum in the moving process. Then, the specifications of the lead screw, the diameter of the transfer nut, and the lead pitch that are configured are determined based on this maximum thrust.

JP, 2011-10544, A JP, 2013-150375, A

However, in the process of moving the mobile device in and out, most of the thrust required for the movement is about the rolling resistance due to the weight of the mobile device, which is much smaller than the maximum thrust described above. Therefore, the conventional retracting mechanism wastefully uses the reduction ratio by the lead screw, resulting in an obstacle in reducing the number of times of operation and the operating time, which has been a problem in terms of labor saving in moving in and out.
In addition, since the lead screw length that is equal to or greater than the moving dimension of the moving device is required, the depth dimension of the loading / unloading mechanism is determined, and the dimension of the loading / unloading mechanism in the height direction is determined by the nut external dimensions along with the lead screw diameter. Due to the restrictions, there is a limit to downsizing of the device, and there is a problem that it cannot be downsized and lightweight.

  The present application discloses a technique for solving the above-described problems, and enables reduction of the withdrawal operation force, the number of operations, and the operation time, and a mobile device withdrawal device that can be downsized. The purpose is to provide an electric device.

A mobile device loading / unloading device disclosed in the present application, a frame on which a mobile device is placed, a link movably supporting the frame at one end, and a worm wheel part formed at the other end, and the link. A worm that meshes with the worm wheel portion to rotate the worm wheel portion, and a rotating unit that is connected to the operation shaft of the worm and rotates the worm wheel portion.
In addition, the electric device disclosed in the present application is characterized by using a mobile device loading / unloading device.

  According to the mobile device loading / unloading device and the electrical device disclosed in the present application, it is possible to obtain a mobile device loading / unloading device and an electrical device that can reduce the loading / unloading operation force, the number of operations, and the operation time and can be downsized. You can

FIG. 3 is a perspective view showing the mobile device loading / unloading device according to the first embodiment. FIG. 3 is a perspective view showing the mobile device loading / unloading device according to the first embodiment. FIG. 2 is a perspective view showing a housing of the mobile device loading / unloading device shown in FIG. FIG. 4 is a side view of the mobile device loading / unloading device shown in FIG. 3. FIG. 4 is a front view of the mobile device loading / unloading device shown in FIG. 3. It is the sectional view on the AA line of FIG. FIG. 7 is a perspective view of FIG. 6. FIG. 3 is a perspective view showing a state in which the mobile device is placed on the mobile device loading / unloading device according to the first embodiment and is inserted into the switchgear. It is a side view of FIG. FIG. 6 is a diagram comparing reduction ratios (force ratios) when the mobile device loading / unloading device according to the first embodiment and a conventional device are used. FIG. 9 is a perspective view showing a mobile device loading / unloading device according to a second embodiment. FIG. 10 is a partially enlarged view of a mobile device loading / unloading device according to a third embodiment. FIG. 13 is a partial plan view of a mobile device loading / unloading device according to a fourth embodiment. FIG. 10 is a partial front view of a mobile device loading / unloading device according to a fourth embodiment.

Hereinafter, Embodiment 1 will be described with reference to the drawings.
In the drawings, the same reference numerals indicate the same or equivalent parts.

Embodiment 1.
1 and 2 are perspective views showing a mobile device loading / unloading device according to a first embodiment. FIG. 1 shows a mobile device loading / unloading device in a state where a mobile device is pulled out from a moving destination such as a switchgear, and FIG. 2 is a mobile device loading / unloading state in which a mobile device is inserted into a moving destination such as a switchgear. The device is shown.
FIG. 3 is a perspective view showing the internal structure of the mobile device loading / unloading device shown in FIG. 1 with the housing hidden. 4 is a side view of the mobile device loading / unloading device shown in FIG. 3, and FIG. 5 is a front view of the mobile device loading / unloading device shown in FIG.

In the first embodiment, a mobile device loading / unloading device that inserts or pulls out an electric device, which is a mobile device housed in a switchgear used for power receiving and distribution equipment, into or from a switchgear will be described with reference to FIGS. 1 to 3. To do. Here, the electric equipment refers to a circuit breaker, a switch, a disconnector, an instrument transformer, and the like.
1 to 3, a mobile device loading / unloading device 50 has a housing 1, a worm 2b rotatably supported by the housing 1, and worm wheel portions 3c and 3d that mesh with the worm 2b at respective end portions. It is provided with worm wheel links 3a and 3b, connecting links 5a and 5b respectively connected to the worm wheel links 3a and 3b, and a movable frame 6 connected to the connecting links 5a and 5b.

Further, the operation shaft 2a provided at one end of the worm 2b engages with an operation handle (not shown) that is mounted when the moving device 7 such as a circuit breaker is pulled out or inserted into the switch gear. The worm gear 2 is composed of the worm 2b and the worm wheels of the worm wheel portions 3c and 3d.
The worm wheel links 3a and 3b are rotatably arranged with the pins 4a and 4b, which are rotation supporting shafts, as the axes. The worm wheel portions 3c and 3d are formed at the respective ends of the worm wheel links 3a and 3b, and engage with the threaded portion of the worm 2b. One ends of the connection links 5a and 5b are rotatably pin-connected to the worm wheel links 3a and 3b, respectively. The other ends of the connecting links 5a and 5b are rotatably connected to the movable frame 6 by connecting pins 5c and 5d. The worm wheel links 3a and 3b, the connection links 5a and 5b, and the movable frame 6 form a pantograph link.

  The movable frame 6 constitutes a movable end of the pantograph, and a mobile device 7 such as a circuit breaker that is put in and taken out from a switch gear (not shown) is placed on the movable frame 6. The fixed lock member 8 provided on the housing 1 fixes the housing 1 to a switch gear, for example. Further, the housing 1 houses and supports the worm 2b and the worm wheel portions 3c and 3d of the worm wheel links 3a and 3b. Further, the tooth portions of the worm wheel portions 3c and 3d have a three-dimensional curved surface structure.

FIG. 6 is a sectional view taken along the line AA of FIG. FIG. 7 is a perspective view of FIG. FIG. 8 is a perspective view showing a state in which a circuit breaker is mounted on the mobile device loading / unloading device according to Embodiment 1 and is inserted into a switchgear (not shown). FIG. 9 is a side view of FIG.
As shown in FIG. 6, the movable frame 6 has a configuration in which the ends of the connecting links 5a and 5b are sandwiched between two plates, and the movable frame 6 and the respective ends of the connecting links 5a and 5b are different from each other. , Are rotatably connected by connecting pins 5c and 5d. Further, as shown in FIG. 7, a through hole 6a is formed in the movable frame 6, and a bolt (not shown) is inserted through the through hole 6a from below the movable frame 6 to insert a circuit breaker or the like. The mobile device 7 is fixed.

In the first embodiment, as shown in FIGS. 8 and 9, an example in which the moving device 7 such as a circuit breaker is fixed to the four through holes 6a with the four bolts is shown. The present invention is not limited to this and can be selected as appropriate.
Further, as shown in FIG. 7, the movable frame 6 is formed with a quadrangular discard hole 6b. This is intended to reduce the weight of the movable frame 6. Although the first embodiment has shown the example in which the four discard holes 6b are formed, the number of the discard holes 6b can be appropriately selected.

  Next, the operation will be described. By inserting an operation handle (not shown) into the operation shaft 2a of the worm 2b and rotating the worm 2b, power is transmitted to the worm wheel portions 3c and 3d of the worm wheel links 3a and 3b arranged on both sides of the worm 2b. To do. Then, the worm wheel links 3a and 3b rotate around the pins 4a and 4b, which are rotation supporting shafts, in a direction toward each other, so that the pantograph link extends in the depth direction of the switch gear, and the movable frames 6 extend from the connecting links 5a and 5b. The thrust is transmitted in the depth direction of the switch gear. As a result, the mobile device 7 such as a circuit breaker attached to the movable frame 6 can be moved in the front-rear direction (straight direction) of the switch gear.

  Further, by rotating the operation shaft 2a of the worm 2b in the opposite direction to the above, the worm wheel links 3a and 3b rotate in the directions away from each other, whereby the worm wheel links 3a and 3b, the connection links 5a and 5b, and the movable link. By contracting the pantograph link composed of the frame 6 in the depth direction of the switch gear, the mobile device 7 such as a circuit breaker attached to the movable frame 6 can be pulled out to the original position (drawing position).

As described above, in the operation of moving in and out the circuit breaker, which is the mobile device 7, the force required for most of the moving process is due to the rolling resistance (the rolling resistance of the wheels supporting the mobile device 7) due to the weight of the mobile device 7. is there.
This rolling resistance is much smaller than the thrust or operating force required when mechanical or electrical connection is required at the final insertion area A, which is the final insertion position. Here, the final insertion position is the position where the mobile device 7 is connected to the main circuit in the switchgear. Further, mechanical means the mechanical force required to connect the electrical connectors that connect the mobile devices 7 to each other when the mobile device 7 is connected to the main circuit in the switchgear.
The mobile device loading / unloading device 50 according to the first embodiment uses the place where the reduction ratio is maximized in accordance with the final insertion area A where the pantograph link is fully extended by using the variable force multiplying function of the toggle mechanism in the pantograph link. can do. Therefore, the operating force of the mobile device loading / unloading device 50 can be used without waste, the number of operations can be reduced, and labor saving in operating work can be realized.

  FIG. 10 compares changes in the reduction gear ratio (force ratio) when using the moving equipment loading / unloading device according to the first embodiment with comparison with the reduction gear ratio (force ratio) when using the conventional device (lead screw structure). FIG. That is, FIG. 10 is a graph showing the characteristics of the toggle mechanism of the pantograph described above. That is, as a characteristic of the pantograph link, when the expansion starts from the contracted state, the movable frame 6 moves largely with respect to the rotation amount of the worm wheel links 3a and 3b, and the reduction ratio is small, so the generated thrust is small. However, the amount of movement of the worm wheel links 3a, 3b toward the final position with respect to the amount of rotation decreases and the reduction ratio increases, so that a large thrust can be configured with an efficient reduction ratio. Therefore, the mobile device loading / unloading device 50 according to the first embodiment can be operated with a small number of rotations without waste.

Further, since the mobile device loading / unloading device 50 according to the first embodiment can be configured by a thin plate that can process the pantograph link component member with a sheet metal or the like, the entire mobile device loading / unloading device 50 can be made thin and the height can be suppressed. It is possible to configure.
Further, in the conventional lead screw structure, the size of the device corresponding to the withdrawal direction corresponding to the moving dimension of withdrawal is required, but in the moving device withdrawal device 50 of the first embodiment, the device is moved by contraction of the pantograph link. Since the device 7 is moved, the size of the device corresponding to the moving size for putting in and taking out is unnecessary.
Further, the restriction on the height direction due to the nut outer dimension associated with the diameter of the lead screw, which is required in the conventional lead screw structure, does not require the moving device loading / unloading device 50 according to the first embodiment. Therefore, the mobile device loading / unloading device 50 according to the first embodiment can be made smaller or lighter than the conventional device.

Embodiment 2.
FIG. 11 is a perspective view showing a mobile device loading / unloading device according to the second embodiment.
Hereinafter, the mobile device loading / unloading device 50 according to the second embodiment will be described with reference to FIG.
As shown in FIG. 11, the mobile device loading / unloading device 50 according to the second embodiment is provided with a link including a connecting link 5a and a worm wheel link 3a only on one side of the movable frame 6.
Also in the second embodiment, as in the first embodiment, the mobile device loading / unloading device 50 includes the housing 1, the worm 2b rotatably supported by the housing 1, and the worm wheel portion 3c that meshes with the worm 2b. The worm wheel link 3a, the link 5a connected to the worm wheel link 3a, and the movable frame 6 connected to the link 5a. Further, the operation shaft 2a provided at one end of the worm 2b engages with an operation handle (not shown) that is mounted when the moving device 7 such as a circuit breaker is pulled out or inserted into the switch gear.

The worm wheel link 3a is rotatably arranged with the pin 4a, which is a rotation support shaft, as its axis. The worm wheel portion 3c is formed at the end of the worm wheel link 3a and engages with the threaded portion of the worm 2b. One end of the connection link 5a is rotatably pin-connected to the worm wheel link 3a. The other end of the connecting link 5a is rotatably connected to the movable frame 6 by a connecting pin 5c.
The movable frame 6 is connected to a mobile device 7 such as a circuit breaker that is inserted into and removed from a switch gear (not shown). Further, the housing 1 houses and supports the worm 2b and the worm wheel portion 3c of the worm wheel link 3a.

  In the mobile device loading / unloading apparatus 50 according to the second embodiment, the linear guide 9 of the mobile device 7 is provided in contact with the movable frame 6. The linear guide 9 is fixed to, for example, a switch gear, and the movable frame 6 is slid and used. When the linear motion guide 9 of the mobile device 7 is provided, it does not have to be a pantograph link mechanism, and for example, a link configuration of only the worm wheel link 3a on the right side and the connection link 5a constitutes a moving-in / out moving function of the mobile device 7. It is possible. In the second embodiment, the same effect as that of the first embodiment can be obtained, and the number of components can be reduced.

Embodiment 3.
FIG. 12 is a partially enlarged view of the mobile device loading / unloading device according to the third embodiment. Hereinafter, the mobile device loading / unloading device 50 according to the third embodiment will be described with reference to FIG. The mobile device loading / unloading apparatus 50 according to the third embodiment is characterized in that the worm wheel link 3a is arranged so as to be displaced by a 1/2 lead pitch P with respect to the worm wheel link 3b. It has the same structure as that of the first embodiment.

When the worm wheel links 3a and 3b are arranged on both sides of the worm 2b, there is a shift of the engaging portion of the screw thread for a half turn due to the twist of the lead of the worm 2b. In accordance with this, the worm wheel links 3a and 3b are displaced by 1/2 rotation, that is, by 1/2 lead pitch P. That is, the rotary shaft of the worm wheel link 3a provided on one side of the worm 2b is displaced from the rotary shaft of the worm wheel link 3b provided on the other side by 1/2 lead pitch P of the worm 2b. It is arranged and configured.
Along with this, the connecting links 5a, 5b are also shifted by 1/2 the lead pitch P and connected to the movable frame 6, so that the same member can be used on the left and right, and the number of component parts can be reduced. At the same time, it is possible to provide a highly reliable mobile device loading / unloading device 50 in which the right and left members are commonly used to prevent assembly errors.

Fourth Embodiment
FIG. 13A is a partial plan view of the mobile device loading / unloading device according to the fourth embodiment. FIG. 13B is a partial front view of the mobile device loading / unloading device according to the fourth embodiment. In the first to third embodiments, the tooth portions of the worm wheel portions 3c and 3d of the worm wheel links 3a and 3b are three-dimensionally curved worm wheels, but in the fourth embodiment, the worm wheel portions 3c and 3d. The tooth portion of is formed by the spur gear 10 having a two-dimensional shape instead of a three-dimensional curved surface shape.
When the worm wheel portions 3c and 3d are formed by sheet metal working, or when they are thin, even if the spur gear shape is used instead of the worm wheel shape, interference other than the normal transmission contact surface due to the lead angle twist of the worm 2b is used. Since it can be avoided, the spur gear 10 that can be manufactured by an inexpensive processing method such as press working or laser processing can be used as a substitute. Can be provided.

Embodiment 5.
In the moving-in / out apparatus 50 of the mobile device according to the first to fourth embodiments, the surface hardness of the worm wheel portions 3c and 3d of the worm wheel links 3a and 3b is lower than the surface hardness of the screw portion of the worm 2b. There is.

When using with a large thrust, by making the surface hardness of the worm wheel portions 3c, 3d lower than the surface hardness of the worm 2b, a larger operation can be performed without causing damage or damage due to galling (burning). It is possible to configure a compact mechanism that can withstand the force and generate a large propulsive force.
When the transmission contact surfaces of the worm wheel portions 3c and 3d are used under a large surface pressure such that they are plastically deformed beyond the elastic deformation region, the worm wheel portions 3c and 3d are placed before the contact surface of the worm 2b. The plastic deformation causes a depression along the shape of the contact portion with the worm 2b, so that the initial point contact state is self-expanded to the surface contact through the line contact. As a result, it is possible to configure a compact mechanism that can withstand a larger operating force and generate a large propulsive force without causing damage or damage due to galling or the like.

Also in the moving-in / out apparatus 50 of the mobile device according to the second to fifth embodiments, the same change in reduction ratio (force ratio) as in the first embodiment shown in FIG. 10 is shown. Therefore, even in the mobile device loading / unloading apparatus 50 according to the second to fifth embodiments, it is possible to operate with a small number of rotations without waste.
In addition, in the above-described first to fifth embodiments, the case where the invention is applied to the electric device housed in the switchgear so as to be drawn out has been described. However, the application target is not limited to the electric device and the operation position is not limited. The mobile device loading / unloading device 50 disclosed in the first to fifth embodiments of the present application can be applied as long as it is moved in the front-back direction.
Although the present application describes various exemplary embodiments and examples, various features, aspects, and functions described in one or more of the embodiments are applicable to particular embodiments. However, the present invention is not limited to this, and can be applied to the embodiments alone or in various combinations.
Therefore, innumerable variations not illustrated are envisioned within the scope of the technology disclosed herein. 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 housing, 2 worm gear, 2a operating shaft, 2b worm, 3a, 3b worm wheel link, 3c, 3d worm wheel part, 4a, 4b pin, 5a, 5b connecting link, 5c, 5d connecting pin, 6 movable frame, 6a penetrating Hole, 6b waste hole, 7 moving device, 8 fixed side locking member, 9 linear guide, 10 spur gear, 50 moving device taking in and out device

A mobile device loading / unloading device disclosed in the present application, a frame on which a mobile device is placed, a link movably supporting the frame at one end, and a worm wheel part formed at the other end, and a link of the link. A worm that meshes with the worm wheel portion and rotates the worm wheel portion, and a rotating unit that is connected to an operation shaft of the worm and that rotates the worm wheel portion.
In addition, the electric device disclosed in the present application is characterized by using a mobile device loading / unloading device.

FIG. 10 compares changes in the reduction gear ratio (force ratio) when using the moving equipment loading / unloading device according to the first embodiment with comparison with the reduction gear ratio (force ratio) when using the conventional device (lead screw structure). FIG. That is, FIG. 10 is a graph showing the characteristics of the toggle mechanism of the pantograph described above. That is, as a characteristic of the pantograph link, when the expansion starts from the contracted state, the movable frame 6 moves largely with respect to the rotation amount of the worm wheel links 3a and 3b, and the reduction ratio is small, so the generated thrust is small. However, since the amount of movement of the worm wheel links 3a and 3b with respect to the rotation amount decreases toward the end position and the reduction gear ratio increases, a large thrust can be configured with an efficient reduction gear ratio. Therefore, the mobile device loading / unloading device 50 according to the first embodiment can be operated with a small number of rotations without waste.

Embodiment 3.
FIG. 12 is a partially enlarged view of the mobile device loading / unloading device according to the third embodiment. Hereinafter, the mobile device loading / unloading device 50 according to the third embodiment will be described with reference to FIG. The mobile device loading / unloading apparatus 50 according to the third embodiment is characterized in that the worm wheel link 3a is arranged so as to be displaced by a 1/2 lead pitch P with respect to the worm wheel link 3b. It has the same structure as that of the first embodiment.

When using with a large thrust, by making the surface hardness of the worm wheel portions 3c, 3d lower than the surface hardness of the worm 2b, a larger operation can be performed without causing damage or damage due to galling (burning). It is possible to configure a compact mechanism that can withstand the force and generate a large propulsive force.
When the transmission contact surfaces of the worm wheel portions 3c and 3d are used under a large surface pressure such that they are plastically deformed beyond the elastic deformation region, the worm wheel portions 3c and 3d are placed before the contact surface of the worm 2b. The plastic deformation causes a depression along the shape of the contact portion with the worm 2b, so that the point contact state is expanded from the initial point contact state to the line contact to the surface contact. As a result, it is possible to configure a compact mechanism that can withstand a larger operating force and generate a large propulsive force without causing damage or damage due to galling or the like.

A mobile device loading / unloading device disclosed in the present application includes a frame on which a mobile device is placed , a link that movably supports the frame at one end, and the other end that rotates about a rotation axis . A worm wheel portion formed at the other end portion and rotating about the rotation shaft, a worm that meshes with the worm wheel portion of the link and rotates the worm wheel portion, and is connected to an operation shaft of the worm. And rotating means for rotating the worm wheel portion.
Further, a mobile device loading / unloading device disclosed in the present application, a frame on which the mobile device is placed, a link movably supporting the frame at one end, and a worm wheel part formed at the other end, The worm includes a worm that meshes with the worm wheel portion of the link to rotate the worm wheel portion, and rotation means that is connected to an operation shaft of the worm and rotates the worm wheel portion. The pantograph links are provided on both sides and together with the frame.
Furthermore, the mobile device loading / unloading device disclosed in the present application includes a frame on which the mobile device is placed, a link movably supporting the frame at one end, and a worm wheel part formed at the other end. A worm that meshes with the worm wheel portion of the link and rotates the worm wheel portion; and a rotation unit that is connected to an operating shaft of the worm and that rotates the worm wheel portion. A linear motion guide for a mobile device is provided.
Further, a mobile device loading / unloading device disclosed in the present application, a frame on which the mobile device is placed, a link movably supporting the frame at one end, and a worm wheel part formed at the other end, A worm that meshes with the worm wheel portion of the link and rotates the worm wheel portion, and a rotation unit that is connected to an operating shaft of the worm and that rotates the worm wheel portion, are provided on one side. The rotary shaft of the link is arranged so as to be displaced by 1/2 lead pitch of the worm with respect to the rotary shaft of the link provided on the other side.
Furthermore, the mobile device loading / unloading device disclosed in the present application includes a frame on which the mobile device is placed, a link movably supporting the frame at one end, and a worm wheel part formed at the other end. A worm that meshes with the worm wheel portion of the link and rotates the worm wheel portion; and a rotation unit that is connected to an operating shaft of the worm and that rotates the worm wheel portion, the surface of the worm wheel portion The hardness is lower than the surface hardness of the worm.
Further, the mobile device loading / unloading device disclosed in the present application supports a frame on which a mobile device that moves in the front-rear direction from an operating position is mounted, and one frame movably supporting the frame, and the other end of the worm wheel unit. And a worm that meshes with the worm wheel portion of the link to rotate the worm wheel portion, and rotation means that is connected to an operation shaft of the worm and rotates the worm wheel portion. The frame is characterized by moving in the front-back direction.
The electric device disclosed in the present application is characterized by using the mobile device loading / unloading device disclosed in the present application .
Furthermore, an electric device disclosed in the present application is an electric device using a mobile device loading / unloading device, wherein the mobile device loading / unloading device includes a frame on which the mobile device is mounted and the frame that is movable at one end. A link having a worm wheel portion formed at the other end while supporting it, a worm that meshes with the worm wheel portion of the link and rotates the worm wheel portion, and a worm that is connected to an operating shaft of the worm. Rotation means for rotating the wheel portion.

Claims (8)

A frame on which the mobile device is placed,
A link movably supporting the frame at one end, and a worm wheel portion formed at the other end,
A worm that meshes with the worm wheel portion of the link and rotates the worm wheel portion,
Rotating means for rotating the worm wheel portion, which is connected to an operation shaft of the worm, and a moving device loading / unloading device.   The mobile device loading / unloading device according to claim 1, wherein the links are provided on both sides of the worm, and constitute a pantograph link together with the frame.   The mobile device loading / unloading device according to claim 1, wherein a linear motion guide of the mobile device is provided on one side of the frame.   The rotary shaft of the link provided on one side is arranged so as to be offset by a half lead pitch of the worm with respect to the rotary shaft of the link provided on the other side. Item 3. The mobile device loading / unloading device according to item 2.   The surface hardness of the worm wheel part is lower than the surface hardness of the worm, The mobile equipment loading / unloading device according to any one of claims 1 to 4.   The mobile device loading / unloading device according to any one of claims 1 to 5, wherein the worm wheel portion is formed of a spur gear.   7. The mobile device loading / unloading according to any one of claims 1 to 6, wherein the mobile device is any one of an electric device such as a circuit breaker, a switch, a disconnector, and an instrument transformer. apparatus.   An electric device using the mobile device loading / unloading device according to any one of claims 1 to 6.

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