TWI676328B - Mobile machine moving in and out device and electrical machine - Google Patents

Abstract

The mobile device loading and unloading device (50) includes: a support frame (6) for mounting the mobile device (7); a connecting link (5a) for supporting the support frame (6) movably at one end; and a worm gear link (3a) is combined with the connecting link (5a), and the other end is formed with a worm gear part (3c); the worm (2b) is meshed with the worm gear part (3c) of the worm gear link (3a), so that the worm gear part ( 3c) rotation; and a rotation means, which is connected to the operation shaft (2a) of the worm (2b), and rotates the worm wheel portion (3c).

Description

Mobile equipment moving in and out and electrical equipment

The present invention relates to a device for moving in and out a mobile device and an electric device.

In the conventional technology, for example, moving in and out of a mobile device (a circuit breaker, a switch, a line isolator, an instrument ratio converter, etc.) in a switch gear uses a lead screw. A lead screw mechanism that rotates and moves the nut straight along the lead screw is performed (see, for example, Patent Documents 1 and 2).

The conventional carrying-in and carrying-out mechanism disclosed in, for example, the above-mentioned Patent Document 1 is composed of the following unit: a carrier for the circuit-breaker body which can be combined with or separated from a mounting bracket provided behind the cradle to be carried thereon Up; pull-in and pull-out handles are used to move the carrier back and forth; braking means are used to limit the transfer distance of the carrier that is moved by the pull-in and pull-out handles; and girder assembly, Used to support pull-in and pull-out handles. In addition, the structure of the carrier includes: a box body, the upper part of which is open, and a wall of a predetermined height formed on the outer peripheral surface; and two pairs of wheels, which can be pulled in along the guide rails erected on the inside of both side walls of the cradle or Pull out mode is set on the cabinet On both sides.

In addition, the pull-in and pull-out handles are composed of the following units: a lead screw that can be inserted through the through hole in the wall formed in front of the box in the front-rear direction; and a transfer nut that is screwed to the lead screw and is installed in the state The inside of the wall in front of the box; the "U" -shaped bracket is fixed to the box to prevent the transfer nut from detaching; and the operation handle is detachably provided at the front end in a manner that allows the lead screw to rotate forward and reverse .

In this manner, the conventional loading and unloading mechanism uses a mechanism that rotates the lead screw to move the nut straight along the lead screw to perform the loading and unloading operation of the machine. The reason why these mechanisms are widely used is that by using a lead screw and a nut, it is possible to construct a speed reducer function and a linear thrust when a rotary operation force is converted into a linear motion in a relatively simple manner.

During the movement of the mobile device in the switchgear, the required thrust force will be maximized during the moving process because the contact plug of the electrical circuit contact is inserted near the final position. The diameters of the lead screw, the transfer nut, and the lead pitch used for the configuration are determined based on the maximum thrust.

[Prior technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Application Laid-Open No. 2011-10544

[Patent Document 2] Japanese Patent Laid-Open No. 2013-150375

However, during the movement of the mobile machine, most of the thrust required for the movement is due to the rolling resistance caused by the weight of the mobile machine. Compared with the aforementioned maximum thrust, only a small amount of force can be used to achieve the purpose. Therefore, in the conventional moving-in and moving-out mechanism, the reduction ratio generated by the lead screw is an inefficient use. As a result, it has caused obstacles to reduce the number of operations and the operating time, and saves labor when moving in and out. Pose a problem.

In addition, since the length of the lead screw must exceed the moving size of the mobile machine, the depth dimension of the carrying-in and carrying-out mechanism has been determined, and the size of the height of the carrying-in and carrying-out mechanism is limited due to the outer dimensions of the nut that fits the lead screw diameter Therefore, the miniaturization of the device has its limits, and there are problems in that miniaturization and weight reduction cannot be achieved.

The present invention discloses a technique for solving the problems described above, and an object of the present invention is to provide a portable device that can reduce the loading and unloading operation force, the number of operations, and the operating time, and a portable device that can be moved in and out, and an electric appliance.

The moving equipment loading and unloading device disclosed in the present invention includes: a supporting frame for mounting the moving equipment; a connecting rod for movably supporting the supporting frame at one end, and a worm gear part formed at the other end; Meshing with the worm gear portion of the link to rotate the worm gear portion; and a rotating means connected to the operating shaft of the worm to rotate the worm gear portion; wherein the links are provided on both sides of the worm, Together with the aforementioned support frame, a scaler link is formed.

In addition, another moving equipment loading / unloading device disclosed in the present invention includes a support frame for mounting the mobile equipment, and a link for movably supporting the support frame at one end, and a worm gear portion is formed at the other end. A worm that meshes with the worm gear portion of the link to rotate the worm gear portion; and a rotating means that is connected to an operation shaft of the worm to rotate the worm gear portion; wherein one side of the support frame is provided The linear motion guide of the aforementioned mobile machine.

Furthermore, the electrical equipment disclosed in the present invention is Move in and out of the device.

If the mobile device is moved into and out of the device and the electrical device according to the present invention, it is possible to reduce the moving force, the number of operations, and the operation time, and the mobile device that can be miniaturized can be carried in and out of the device and the electrical device.

1‧‧‧ shell

2‧‧‧ Worm Gear Set

2a‧‧‧operation shaft

2b‧‧‧worm

3a, 3b‧‧‧ worm gear link

3c, 3d‧‧‧ worm gear

4a, 4b‧‧‧pin

5a, 5b‧‧‧ connecting rod

5c, 5d

6‧‧‧ movable support

6a‧‧‧through hole

6b‧‧‧weight reduction hole

7‧‧‧ Mobile Machine

8‧‧‧ fixed side locking member

9‧‧‧Straight forward motion guide

10‧‧‧ flat gear

50‧‧‧ Mobile equipment moving in and out

Fig. 1 is a perspective view showing a mobile device carrying-in / out device according to the first embodiment.

Fig. 2 is a perspective view showing a mobile device carrying-in and carrying-out device according to the first embodiment.

FIG. 3 is a perspective view showing an unshown casing of the mobile device carrying-in and carrying-out device shown in FIG. 1. FIG.

Fig. 4 is a side view of the moving equipment loading and unloading device shown in Figure 3.

Fig. 5 is a front view of the moving equipment loading and unloading device shown in Figure 3.

Fig. 6 is a sectional view taken along the line A-A in Fig. 1.

FIG. 7 is a perspective view of FIG. 6.

Fig. 8 is a perspective view showing a state in which the mobile device is mounted on the mobile device in and out of the first embodiment and inserted into the switchgear.

Figure 9 is a side view of Figure 8.

Fig. 10 is a device for carrying in and out using a mobile device of the first embodiment Comparison diagram with reduction ratio (force ratio) when using a conventional device.

Fig. 11 is a perspective view showing a mobile device carrying-in and carrying-out device according to the second embodiment.

Fig. 12 is a partially enlarged view of a moving equipment carrying in and carrying out device according to the third embodiment.

Fig. 13A is a partial plan view of a moving equipment carrying-in and carrying-out device according to the fourth embodiment.

Fig. 13B is a partial front view of the moving-in-and-out device of the mobile device according to the fourth embodiment.

[Embodiment of Invention]

Embodiment 1 will be described below with reference to the drawings.

In the drawings, the same reference numerals indicate the same or equivalent members.

[Embodiment 1]

Fig. 1 and Fig. 2 are perspective views showing a mobile device carrying-in and carrying-out device according to the first embodiment. FIG. 1 shows a mobile device being moved into and out of a device such as a mobile device being pulled out of a mobile destination such as a switch device, and FIG. 2 is a mobile device being shown in a state where a mobile device is inserted into a mobile destination such as a switch device Move in and out of the device.

In addition, FIG. 3 is a perspective view showing an internal structure of a state in which the casing of the mobile device shown in FIG. 1 is carried in and out without showing a casing. In addition, FIG. 4 is a side view of the moving equipment moving in and out device shown in FIG. 3, and FIG. The figure is a front view of the moving equipment loading and unloading device shown in Figure 3.

According to the first embodiment, according to FIGS. 1 to 3, an electric device that is housed in a switchgear used in a power distribution device as a mobile device is inserted into the switchgear or the mobile device pulled out from the switchgear is moved in and out Device description. The electrical equipment here refers to circuit breakers, switches, line dividers, instrumentation ratio converters, and the like.

In FIGS. 1 to 3, the mobile device carrying-in and carrying-out device 50 includes a housing 1; a worm 2b supported on the housing 1 in a freely rotatable manner; and worm gear links 3a and 3b, each of which is respectively engaged with The worm gear portions 3c and 3d of the worm 2b; the connecting links 5a and 5b are connected to the worm gear links 3a and 3b, respectively; and the movable support frame 6 is connected to the connecting links 5a and 5b.

In addition, an operation shaft 2a provided at one end of the worm 2b is engaged with an operation handle (not shown), which is installed when the mobile device 7 such as a circuit breaker is operated to pull out or insert a switch device. . The worm gear 2b and the worm gears of the worm gear portions 3c and 3d constitute a worm gear set 2.

The worm gear links 3a and 3b are arranged so as to be rotatable around the pins 4a and 4b as the rotation support shafts. The worm gear portions 3c and 3d are formed at the respective end portions of the worm gear links 3a and 3b, and are engaged with the screw portions of the worm 2b. One end portions of the connecting links 5 a and 5 b are respectively rotatably pin-coupled to the worm gear links 3 a and 3 b. The other ends of the connecting links 5a and 5b are rotatably coupled to the movable support frame 6 by the connecting pins 5c and 5d. In addition, a worm gear link 3a, 3b, connecting links 5a, 5b, and a movable support frame 6 constitute a pantograph link.

The movable support frame 6 is the movable end of the scaler for loading. A mobile device 7 such as a circuit breaker that carries in and out a switchgear (not shown) is provided. The fixed-side locking member 8 provided in the housing 1 is, for example, a member that fixes the housing 1 to a switching device. Furthermore, the housing 1 accommodates and supports the worm 2b and the worm parts 3c and 3d of the worm gear links 3a and 3b. The teeth of the worm gear portions 3c and 3d have a three-dimensional curved structure.

Fig. 6 is a sectional view taken along the line A-A in Fig. 1. FIG. 7 is a perspective view of FIG. 6. Fig. 8 is a perspective view showing a state in which a circuit breaker is mounted on a mobile device carrying in and out device of Embodiment 1 and inserted into a switchgear (not shown). Figure 9 is a side view of Figure 8.

As shown in FIG. 6, the movable support frame 6 is configured to hold the respective ends of the connecting links 5 a and 5 b by two plates, and the respective ends of the movable support frame 6 and the connecting links 5 a and 5 b are configured to The connection pins 5c and 5d are connected to rotate freely. In the configuration shown in FIG. 7, the movable support frame 6 is formed with a through hole 6a, and a bolt is inserted from below the movable support frame 6 and inserted into the through hole 6a (not shown), and a circuit breaker or the like is inserted. The mobile machine 7 is fixed.

In the first embodiment, as shown in FIGS. 8 and 9, although an example in which a mobile device 7 such as a circuit breaker is fixed to four through holes 6 a by four bolts is shown, the number of through holes 6 a is not limited to this. , You can choose appropriately.

Further, as shown in FIG. 7, the movable support frame 6 is formed with a quadrangular weight reduction hole 6 b. The purpose is to reduce the weight of the movable support frame 6. Although the first embodiment shows an example in which four weight reduction holes 6b are formed, the number of the weight reduction holes 6b may be appropriately selected.

Next, the operation will be described. An operation handle (not shown) is inserted into the operation shaft 2a of the worm 2b, and the worm 2b is rotated to transmit power to the worm gear portions 3c and 3d of the worm gear links 3a and 3b arranged on both sides of the worm 2b. Then, the worm gear links 3a, 3b are rotated around the pins 4a, 4b, which are the rotation support shafts, in a direction approaching each other, so that the scaler link is extended in the depth direction of the switchgear, so that the thrust force is from the connecting link 5a, 5b is transmitted to the movable support frame 6 in the depth direction of the switchgear. As a result, a mobile device 7 such as a circuit breaker mounted on the movable support frame 6 can be moved in the forward and backward direction (straight forward direction) of the switchgear.

Next, by rotating the operation shaft 2a of the worm 2b in a direction opposite to the foregoing, the worm gear links 3a, 3b are rotated in directions away from each other, so that the worm gear links 3a, 3b, the connecting links 5a, 5b, and The scaler constituted by the movable support frame 6 is retracted with respect to the depth direction of the switchgear, and the mobile device 7 such as a circuit breaker mounted on the movable support frame 6 can be pulled out to the original position (drawn position).

As described above, in the loading and unloading operation of the circuit breaker belonging to the mobile device 7, most of the force required for the moving step is caused by the rolling resistance of the mobile device 7 itself (rolling resistance supporting the wheels of the mobile device 7).

This rolling resistance is a much smaller force than the thrust (ie, operating force) required to perform a mechanical or electrical connection in the final insertion area A belonging to the final insertion position. Here, the final insertion position refers to a position where the mobile device 7 is connected to the main circuit in the switchgear. In addition, the term "mechanical" refers to the connection of electrical connectors connected to each other to move a machine. 7 Mechanical force required to connect to the main circuit in the switchgear.

The mobile device loading and unloading device 50 of the first embodiment uses the variable force multiplication function of the toggle mechanism of the scaler to maximize the reduction ratio when the scaler is extended to the end of the final insertion area A. Can be used. Therefore, the operating force for carrying the mobile device into and out of the device 50 can be utilized without being used inefficiently, the number of operations can be reduced, and labor can be saved.

Fig. 10 is a graph comparing the change in the reduction ratio (force ratio) when the mobile device is carried in and out of the device using Embodiment 1 and the reduction ratio (force ratio) when the conventional device (lead screw structure) is used. That is to say, FIG. 10 is a diagram in which the characteristics of the toggle mechanism of the above-mentioned scaler are graphed. That is, in terms of the characteristics of the scaler, when it is extended from the contracted state, the movable support frame 6 moves relatively with respect to the amount of rotation of the worm gear links 3a and 3b, and the deceleration is relatively small, so the generated thrust is relatively small. small. However, since the amount of movement toward the end position is small relative to the amount of rotation of the worm gear links 3a, 3b, and the reduction ratio is increased, the reduction ratio with excellent efficiency can constitute a huge thrust. Therefore, the moving device carrying in and out device 50 according to the first embodiment can be operated with a small number of rotations, which does not cause unproductive use.

In addition, the mobile device carry-in / out device 50 according to Embodiment 1 is a constituent member of the scaler because it is a thin plate that can be processed by sheet metal or the like. Therefore, the overall thickness of the mobile device carry-in / out device 50 can be reduced and suppressed. Its height.

Moreover, in the conventional lead screw structure, the size of the device must correspond to the carrying-in and carrying-out direction commensurate with the carrying-in and carrying-out movement dimensions, but the embodiment The mobile device in the first state can be moved into the loading / unloading device 50, and the mobile device 7 can be moved by the contraction of the scaler. Therefore, the size of the device does not need to correspond to the moving size of the loading / unloading device.

Further, in the conventional lead screw structure, the outer dimension of the nut is restricted in the height direction according to the required lead screw diameter, but this is not the case when the mobile device of the first embodiment is carried into the carrying device 50. Therefore, the mobile device carrying in / out device 50 according to the first embodiment can be reduced in size and weight as compared with the conventional device.

[Embodiment 2]

Fig. 11 is a perspective view of a moving equipment loading and unloading device according to a second embodiment.

Hereinafter, a mobile device carry-in / out device 50 according to the second embodiment will be described with reference to FIG. 11.

As shown in FIG. 11, the mobile device carry-in / out device 50 of the second embodiment is provided with a link composed of a connecting link 5 a and a worm gear link 3 a on only one side of the movable support frame 6.

As in the first embodiment, in the second embodiment, the mobile device loading and unloading device 50 includes: a housing 1; a worm 2b, which is rotatably supported by the housing 1; a worm gear link 3a, which is engaged with the worm 2b at the end The worm gear part 3c; the connecting link 5a is connected to the worm gear link 3a; and the movable support frame 6 is connected to the connecting link 5a. In addition, the operation shaft 2a provided at one end of the worm 2b is engaged with an operation handle (not shown) for pulling out or inserting a switch device of the mobile device 7 such as a circuit breaker to operate a fashion device.

The worm gear link 3a is rotatably arranged with a pin 4a as a rotation support shaft as an axis. The worm gear portion 3c is formed at an end portion of the worm gear link 3a, and is engaged with a threaded portion of the worm 2b. One end of the connecting link 5a is rotatably coupled to the worm gear link 3a as a pin. The other end of the connecting link 5a is rotatably coupled to the movable support frame 6 by a connecting pin 5c.

The movable support frame 6 is coupled to a mobile device 7 such as a circuit breaker that is carried in and out of a switchgear (not shown). The housing 1 is a worm gear portion 3c that accommodates and supports the worm 2b and the worm gear link 3a.

In the mobile device carrying-in / out device 50 of the second embodiment, the straight-moving operation guide 9 of the mobile device 7 contacts and is installed on the movable support frame 6. The linear motion guide 9 is fixed to, for example, a switch device, and is used to slide the movable support frame 6. When the linear motion guide 9 of the mobile device 7 is provided, there is no need for a scaler mechanism. For example, only the right-side worm gear link 3a and the link structure connecting the link 5a can be used to configure the moving function of the mobile device 7. In the second embodiment, the same effects as those in the first embodiment can be obtained, and the number of parts can be reduced.

[Embodiment 3]

Fig. 12 is a partially enlarged view of a moving equipment carrying in and carrying out device according to the third embodiment. Hereinafter, a mobile device carry-in / out device 50 according to the third embodiment will be described with reference to FIG. 12. The mobile device carrying in / out device 50 according to the third embodiment is characterized in that the worm gear link 3a is arranged to be offset by 1/2 lead pitch P from the worm gear link 3b. The structure is the same as that of the first embodiment.

When the worm gear links 3a and 3b are arranged on both sides with the worm 2b interposed there may be a deviation in the thread meshing portion of the semi-rotation amount due to the lead twist of the worm 2b. In accordance with this situation, the worm gear links 3a and 3b are arranged to be offset by 1/2 of the rotation amount (that is, 1/2 of the lead pitch P amount). In other words, the rotation shaft system of the worm gear link 3a provided on one side with the worm 2b interposed therebetween is configured so as to be offset from the 1/2 axis of the worm 2b with respect to the rotation axis of the worm gear link 3b provided on the other side. Range pitch P amount.

In addition, with this configuration, the connecting links 5a and 5b are also connected to the movable support frame 6 by a deviation of 1/2 lead pitch P, so that the same component can be used on the left and right, reducing the number of components. It is also possible to prevent assembly errors and the like by the commonization of the left and right members, thereby providing a highly reliable mobile device loading and unloading device 50.

[Embodiment 4]

Fig. 13A is a partial plan view of a moving equipment carrying-in and carrying-out device according to the fourth embodiment. Meanwhile, FIG. 13B is a partial front view of the moving-in-and-out device of the mobile device according to the fourth embodiment. In the first to third embodiments, the teeth of the worm gear portions 3c and 3d of the worm gear links 3a and 3b are three-dimensional curved worm gears. However, the feature of the fourth embodiment is that the teeth of the worm gear portions 3c and 3d are not caused by The three-dimensional curved surface is configured by a two-dimensional flat gear 10.

In the case where the worm gear portions 3c and 3d are formed by sheet metal processing, when the structure is thin, even if a worm gear shape is used instead of a flat gear shape, regular transmission contact caused by the twist of the lead angle of the worm 2b can be avoided. Out of face Disturbances can therefore be replaced by flat gears 10 that can be manufactured by inexpensive processing methods such as punching or laser processing, thereby providing a cheaper and more suitable mobile production equipment loading and unloading device 50.

[Embodiment 5]

In the mobile device loading and unloading device 50 of the first to fourth embodiments, the surface hardness of the worm gear portions 3c, 3d of the worm gear links 3a, 3b is lower than that of the screw portion of the worm 2b.

When using a large thrust, by setting the surface hardness of the worm gear portions 3c, 3d to be lower than the surface hardness of the worm 2b, the mechanism that can withstand greater operating forces and can generate huge thrust can be simplified, No damage or breakage due to biting (melting).

In addition, when the contact surfaces of the worm wheel portions 3c and 3d are used in a large surface pressure that exceeds the elastic deformation area to achieve plastic deformation, the worm wheel portions 3c and 3d are plastically deformed before the contact surfaces of the worm 2b, so that The shape of the contact portion with the worm 2b is dented, and it expands from the initial point contact state to line contact and surface contact by itself. With this effect, the mechanism that can withstand greater operating forces and generate a large propulsive force can be simplified, and no damage or breakage will occur due to biting, etc.

Even in the mobile device carrying in / out device 50 of the second to fifth embodiments, the same reduction ratio (force ratio) as that of the first embodiment shown in FIG. 10 is displayed. Therefore, even if the mobile device is carried in and out of the loading / unloading device 50 according to the second to fifth embodiments, the number of rotations can be operated without being inefficient.

In addition, in the above-mentioned first to fifth embodiments, although an example is applied to an electric device that can be pulled out and stored in a switchgear, the application object is not limited to the electric device, as long as it is from the operating position. Looking at those who can move in the forward-backward direction, the mobile device carrying in / out device 50 disclosed in Embodiments 1 to 5 of this application can be applied.

Although various exemplary implementations and examples are described in this application, the various features, aspects, and functions stated in one or more implementations are not limited to application to specific implementations. It may be applied to the embodiment individually or in various combinations.

Therefore, countless variations that are not illustrated can also be obtained from the technical scope disclosed in the specification of this case. For example, cases where at least one constituent element is changed, added, or omitted, and even when at least one constituent element is further extracted and combined with constituent elements of other embodiments are also included.

Claims (8)

A moving device carrying in and out device is provided with: a support frame for mounting the mobile device; a connecting rod for movably supporting the support frame at one end, and a worm gear part formed at the other end; The worm gear portion of the rod meshes to rotate the worm gear portion; and a rotating means is connected to the operation shaft of the worm shaft to rotate the worm gear portion, wherein the link rods are provided on both sides of the worm shaft and are The supporting frames together form a scaler link. The moving machine moving in / out device according to item 1 of the scope of patent application, wherein the rotation axis of the link provided on one side is offset from the rotation axis of the worm relative to the rotation axis of the link provided on the other side. 1/2 lead pitch. A moving device carrying in and out device is provided with: a support frame for mounting the mobile device; a connecting rod for movably supporting the support frame at one end, and a worm gear part formed at the other end; The worm gear portion of the lever is meshed to rotate the worm gear portion; and a rotating means is connected to the operation shaft of the worm shaft to rotate the worm gear portion; wherein a linear motion guide of the moving machine is provided on one side of the support frame. Pieces. According to the mobile device moving in / out device described in any one of claims 1 to 3, the surface hardness of the worm gear portion is lower than the surface hardness of the worm shaft. The moving equipment moving in and out device according to any one of claims 1 to 3 in the scope of the patent application, wherein the worm gear portion is constituted by a flat gear. The mobile device moving-in and moving-out device according to any one of claims 1 to 3 in the scope of patent application, wherein the mobile device is any one of a circuit breaker, a switch, a line isolator, and a meter ratio converter . The mobile device moving in and out device according to any one of claims 1 to 3 in the scope of the patent application, wherein the mobile device is inserted into or pulled out from the switchgear; the support frame is oriented toward the aforementioned Move the machine in the insertion or extraction direction. An electric machine using the moving machine moving in and out device described in any one of the claims 1 to 7 of the scope of patent application.